dei |
Entity Common Stock, Shares Outstanding |
Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument. |
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us-gaap |
Additional Paid in Capital, Common Stock |
Value received from shareholders in common stock-related transactions that are in excess of par value or stated value and amounts received from other stock-related transactions. Includes only common stock transactions (excludes preferred stock transactions). May be called contributed capital, capital in excess of par, capital surplus, or paid-in capital. |
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us-gaap |
Available-for-sale Securities, Noncurrent |
Investments in debt and equity securities which are categorized neither as held-to-maturity nor trading and which are intended to be sold or mature more than one year from the balance sheet date or operating cycle, if longer. Such securities are reported at fair value; unrealized gains (losses) related to Available-for-sale Securities are excluded from earnings and reported in a separate component of shareholders' equity (other comprehensive income), unless the Available-for-sale security is designated as a hedge or is determined to have had an other than temporary decline in fair value below its amortized cost basis. All or a portion of the unrealized holding gain (loss) of an Available-for-sale security that is designated as being hedged in a fair value hedge is recognized in earnings during the period of the hedge, as are other than temporary declines in fair value below the cost basis for investments in equity securities and debt securities that an entity intends to sell or it is more likely than not that it will be required to sell before the recovery of its amortized cost basis. Other than temporary declines in fair value below the cost basis for debt securities categorized as Available-for-sale that an entity does not intend to sell and for which it is not more likely than not that the entity will be required to sell before the recovery of its amortized cost basis are bifurcated into credit losses and losses related to all other factors. Other than temporary declines in fair value below cost basis related to credit losses are recognized in earnings, and losses related to all other factors are recognized in other comprehensive income. |
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us-gaap |
Cash and Cash Equivalents, Period Increase (Decrease) |
Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Includes effect from exchange rate changes. |
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us-gaap |
Cash, Period Increase (Decrease) |
Amount of increase (decrease) in cash. Cash is the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Includes effect from exchange rate changes. |
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us-gaap |
Commitments and Contingencies |
Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur. |
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us-gaap |
Deferred Tax Assets, Net |
Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting. |
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us-gaap |
Depreciation, Depletion and Amortization, Nonproduction |
The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. |
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us-gaap |
Derivative Liability |
Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset. |
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us-gaap |
Derivative Liability, Current |
Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset. |
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us-gaap |
Effect of Exchange Rate on Cash and Cash Equivalents |
Amount of increase (decrease) from the effect of exchange rate changes on cash and cash equivalent balances held in foreign currencies. |
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us-gaap |
Exploration Costs, Period Cost |
"The capitalized costs incurred during the period (excluded from amortization) in identifying areas that may warrant examination and in examining specific areas that are considered to have prospects of containing oil and gas reserves, including costs of drilling exploratory wells and exploratory-type stratigraphic test wells. Exploration costs may be incurred both before acquiring the related property (sometimes referred to in part as prospecting costs) and after acquiring the property. Principal types of exploration costs, which include depreciation and applicable operating costs of support equipment and facilities and other costs of exploration activities, are: costs of topographical, geographical and geophysical studies, rights of access to properties to conduct those studies, and salaries and other expenses of geologists, geophysical crews, and others conducting those studies. Collectively, these are sometimes referred to as geological and geophysical or ""G&G"" costs. Exploration costs also include costs of carrying and retaining undeveloped properties, such as delay rentals, ad valorem taxes on properties, legal costs for title defense, the maintenance of land and lease records, dry hole contributions and bottom hole contributions, costs of drilling and equipping exploratory wells and costs of drilling exploratory-type stratigraphic test wells." |
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us-gaap |
General and Administrative Expense |
The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line. |
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us-gaap |
Increase (Decrease) in Accounts Receivable, Related Parties |
The increase (decrease) during the reporting period in the amount due to the reporting entity for good and services provided to the following types of related parties: a parent company and its subsidiaries; subsidiaries of a common parent; an entity and trust for the benefit of employees, such as pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management, an entity and its principal owners, management, member of their immediate families, affiliates, or other parties with the ability to exert significant influence. |
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us-gaap |
Long-term Debt |
Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. |
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us-gaap |
Long-term Debt, Current Maturities |
Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. |
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us-gaap |
Long-Term Debt, Maturity, after Year Five |
Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Long-Term Debt, Maturity, Year One |
Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Long-Term Debt, Maturity, Year Five |
Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Long-Term Debt, Maturity, Year Four |
Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Long-Term Debt, Maturity, Year Three |
Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Long-Term Debt, Maturity, Year Two |
Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). |
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us-gaap |
Long-Term Debt, Maturity, Remainder of Fiscal Year |
Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in remainder of current fiscal year. |
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us-gaap |
Long-term Debt, Excluding Current Maturities |
Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. |
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us-gaap |
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate |
The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a rate subject to change from time to time. |
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us-gaap |
Notes Payable, Noncurrent |
Carrying value as of the balance sheet date of notes payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion. |
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us-gaap |
Net Cash Provided by (Used in) Operating Activities, Continuing Operations |
Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. |
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us-gaap |
Other Comprehensive Income (Loss), before Tax (Deprecated 2012-01-31) |
This element represents Other Comprehensive Income or Loss, Before Tax, for the period. The pretax revenues, expenses, gains, and losses that under generally accepted accounting principles are included in comprehensive income, but excluded from net income. Includes the entity's proportionate share of an investee's equity adjustments for other comprehensive income. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label. |
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us-gaap |
OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax |
Amount, after tax and before adjustment, of unrealized holding gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Excludes unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale. |
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us-gaap |
Proceeds from Sale of Property, Plant, and Equipment |
The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. |
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us-gaap |
Proved Developed Reserves (Volume) |
Net quantities of an enterprise's interests in proved developed reserves of either crude oil (including condensate and natural gas liquids), natural gas, synthetic oil and gas, or other nonrenewable natural resource that is intended to be upgraded into synthetic oil and gas as of the beginning and the end of the year. "Net" quantities of reserves include those relating to the enterprise's operating and nonoperating interests in properties. Quantities of reserves relating to royalty interests owned are included in "net" quantities if the necessary information is available to the enterprise. "Net" quantities does not include reserves relating to interests of others in properties owned by the enterprise. The unit of measure for reserve quantities is defined as "barrels" for oil and synthetic oil reserves or "cubic feet" or "cubic meters" for natural gas and synthetic gas reserves. |
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us-gaap |
Revenues |
Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). |
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us-gaap |
Severance Costs (Deprecated 2013-01-31) |
The charge against earnings in the period for known and estimated costs of termination benefits provided to current employees that are involuntarily terminated under a benefit arrangement associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding costs or losses pertaining to an entity newly acquired in a business combination or a discontinued operation as defined by generally accepted accounting principles and costs associated with one-time termination benefits. |
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us-gaap |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price |
Weighted average price at which option holders acquired shares when converting their stock options into shares. |
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us-gaap |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price |
Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired. |
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us-gaap |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price |
Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value |
Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock. |
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us-gaap |
Significant Costs Incurred to Acquire Mineral Interest of Proved Reserves |
Significant costs that have been incurred, including capitalized costs and costs charged to expense, to acquire mineral interests that have proved reserves. |
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us-gaap |
Standardized Measure of Discounted Future Net Cash Flow of Proved Oil and Gas Reserves, Period Increase (Decrease) |
Amount of increase (decrease) in standardized measure of discounted future net cash flow relating to proved oil and gas reserves. |
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us-gaap |
Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves |
Amount of discounted future accumulated cash inflow relating to proved oil and gas reserves. |
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us-gaap |
Stockholders' Equity Attributable to Parent |
Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. |
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us-gaap |
Deferred Tax Assets, Gross |
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. |
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us-gaap |
Liabilities Subject to Compromise, Accounts Payable and Accrued Liabilities |
The amount of trade accounts payable included in liabilities subject to compromise. |
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us-gaap |
Liabilities Subject to Compromise, Debt and Accrued Interest |
The amount of debt and related accrued interest included in liabilities subject to compromise. |
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us-gaap |
Line of Credit Facility, Amount Outstanding (Deprecated 2014-01-31) |
Amount borrowed under the credit facility as of the balance sheet date. |
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us-gaap |
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent |
Amount after tax of other comprehensive income (loss) attributable to parent entity. |
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us-gaap |
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent |
Amount of tax expense (benefit) allocated to other comprehensive income (loss) attributable to parent entity. |
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us-gaap |
Liabilities Subject to Compromise |
Total amount of liabilities subject to compromise. |
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us-gaap |
Retained Earnings (Accumulated Deficit) |
The cumulative amount of the reporting entity's undistributed earnings or deficit. |
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dei |
Entity Public Float |
The aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked price of such common equity, as of the last business day of the registrant's most recently completed second fiscal quarter. |
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invest |
Investment Warrants, Exercise Price |
Exercise price of the warrants. |
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us-gaap |
Accounts and Other Receivables, Net, Current |
Amount, after allowance, receivable from customers, clients, or other third-parties, and receivables classified as other due within one year or the normal operating cycle, if longer. |
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us-gaap |
Accounts Payable and Accrued Liabilities, Current |
Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits. |
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us-gaap |
Accounts Payable, Current |
Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). |
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us-gaap |
Accounts Receivable, before Allowance for Credit Loss, Current |
Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current. |
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us-gaap |
Accounts Receivable, after Allowance for Credit Loss, Current |
Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current. |
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us-gaap |
Accounts Receivable, Related Parties, Current |
Amount of receivables arising from transactions with related parties due within one year or the normal operating cycle, if longer. |
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us-gaap |
Accretion of Discount (Deprecated 2016-01-31) |
Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of passage of time. |
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us-gaap |
Accrued Income Taxes, Current |
Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all currently due domestic and foreign income tax obligations. |
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us-gaap |
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment |
Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. |
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us-gaap |
Accumulated Other Comprehensive Income (Loss), Net of Tax |
Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge. |
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us-gaap |
Acquisition Costs, Period Cost |
The capitalized costs incurred during the period (excluded from amortization) to purchase, lease or otherwise acquire an unproved property, including costs of lease bonuses and options to purchase or lease properties, the portion of costs applicable to minerals when land including mineral rights is purchased in fee, brokers' fees, recording fees, legal costs, and other costs incurred in acquiring properties. |
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us-gaap |
APIC, Share-based Payment Arrangement, Increase for Cost Recognition |
Amount of increase to additional paid-in capital (APIC) for recognition of cost for award under share-based payment arrangement. |
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us-gaap |
Accounts Receivable, Allowance for Credit Loss, Current |
Amount of allowance for credit loss on accounts receivable, classified as current. |
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us-gaap |
Accounts Receivable, Allowance for Credit Loss, Period Increase (Decrease) |
Amount of increase (decrease) in allowance for credit loss on accounts receivable. |
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us-gaap |
Amortization of Debt Discount (Premium) |
Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense. |
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us-gaap |
Amortization of Debt Issuance Costs |
Amount of amortization expense attributable to debt issuance costs. |
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us-gaap |
Amortization of Debt Issuance Costs and Discounts |
Amount of amortization expense attributable to debt discount (premium) and debt issuance costs. |
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us-gaap |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount |
Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. |
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us-gaap |
Asset Retirement Obligation |
The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. |
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us-gaap |
Asset Retirement Obligation, Accretion Expense |
Amount of accretion expense recognized during the period that is associated with an asset retirement obligation. Accretion expense measures and incorporates changes due to the passage of time into the carrying amount of the liability. |
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us-gaap |
Asset Retirement Obligation, Liabilities Incurred |
Amount of asset retirement obligations incurred during the period. |
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us-gaap |
Asset Retirement Obligations, Noncurrent |
Noncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. |
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us-gaap |
Assets |
Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. |
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us-gaap |
Assets, Current |
Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. |
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us-gaap |
Available-for-sale Securities, Gross Unrealized Losses (Deprecated 2013-01-31) |
This item represents the gross unrealized losses for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities. |
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us-gaap |
Capitalized Costs of Unproved Properties Excluded from Amortization, Period Cost |
The sum of the capitalized costs incurred during the period of unproved properties excluded from amortization including acquisition costs, exploration costs, development costs, and production costs. |
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us-gaap |
Capitalized Costs of Unproved Properties Excluded from Amortization, Cumulative |
The sum of the capitalized costs incurred, as of the balance sheet date, of unproved properties excluded from amortization including acquisition costs, exploration costs, development costs, and production costs. |
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us-gaap |
Capitalized Costs, Oil and Gas Producing Activities, Gross |
The sum of capitalized costs relating to oil and gas producing activities before accounting for accumulated depreciation. |
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us-gaap |
Capitalized Costs, Oil and Gas Producing Activities, Net |
Net amount of capitalized costs relating to oil and gas producing activities. |
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us-gaap |
Capitalized Exploratory Well Cost, Charged to Expense (Deprecated 2016-01-31) |
Capitalized exploratory well costs that were expensed during the year because proved reserves were not found at the exploratory well. |
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us-gaap |
Cash |
Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation. |
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us-gaap |
Cash Acquired from Acquisition |
The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business). |
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us-gaap |
Cash and Cash Equivalents, at Carrying Value |
Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. |
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us-gaap |
Available-for-sale Securities, Gross Unrealized Gains (Deprecated 2013-01-31) |
This item represents the gross unrealized gains for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities. |
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us-gaap |
Average Sales Prices |
The revenues derived from sales of oil or gas in each geographic area during the reporting period divided by the number of barrels of oil produced or thousands of cubic feet of gas produced. |
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us-gaap |
Bankruptcy Claims, Amount of Claims Filed |
Amount of bankruptcy claim filed with bankruptcy court. |
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us-gaap |
Business Acquisition, Contingent Consideration, Shares Issuable (Deprecated 2013-01-31) |
Maximum number of shares issuable under the contingent consideration arrangement in a business combination. |
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us-gaap |
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned |
Value of equity interests (such as common shares, preferred shares, or partnership interest) issued or issuable to acquire the entity. |
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us-gaap |
Business Acquisition, Pro Forma Earnings Per Share, Basic |
The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. |
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us-gaap |
Business Acquisition, Pro Forma Earnings Per Share, Diluted |
The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. |
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us-gaap |
Business Acquisition, Purchase Price Allocation, Current Assets, Cash and Cash Equivalents (Deprecated 2013-01-31) |
The amount of cash and cash equivalents acquired in a business combination. |
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us-gaap |
Business Acquisition, Purchase Price Allocation, Current Assets, Marketable Securities (Deprecated 2013-01-31) |
The amount of acquisition cost of a business combination allocated to marketable securities. |
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us-gaap |
Business Acquisition, Purchase Price Allocation, Current Assets, Prepaid Expense and Other Assets (Deprecated 2013-01-31) |
The amount of acquisition cost of a business combination allocated to prepaid expenses and other current assets. Does not include amounts allocated to cash and cash equivalents, marketable securities, receivables, inventory, and assets not to be used. |
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us-gaap |
Business Acquisition, Purchase Price Allocation, Current Assets, Receivables (Deprecated 2013-01-31) |
The amount of acquisition cost of a business combination allocated to receivables. |
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us-gaap |
Business Acquisition, Purchase Price Allocation, Deferred Tax Liabilities, Noncurrent (Deprecated 2013-01-31) |
Gross amount of acquisition cost of a business combination allocated to noncurrent deferred tax liabilities. |
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us-gaap |
Business Acquisition, Purchase Price Allocation, Mineral Rights (Deprecated 2013-01-31) |
The amount of acquisition cost of a business combination allocated to mineral rights for acquired entities in the mining industry. |
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us-gaap |
Business Acquisition, Pro Forma Net Income (Loss) |
The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period. |
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us-gaap |
Business Acquisition, Pro Forma Revenue |
The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period. |
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us-gaap |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets |
The amount of financial assets (as defined) recognized as of the acquisition date. |
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us-gaap |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Liabilities |
The amount of financial liabilities assumed (as defined) which have been recognized as of the acquisition date. |
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us-gaap |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net |
Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed. |
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us-gaap |
Capital Expenditures Incurred but Not yet Paid |
Future cash outflow to pay for purchases of fixed assets that have occurred. |
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us-gaap |
Capitalized Costs, Accumulated Depreciation, Depletion, Amortization and Valuation Allowance Relating to Oil and Gas Producing Activities |
Amount of accumulated depreciation, depletion, amortization and valuation allowance relating to oil and gas producing activities. |
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us-gaap |
Deferred State and Local Income Tax Expense (Benefit) |
Amount of deferred state and local tax expense (benefit) pertaining to income (loss) from continuing operations. |
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us-gaap |
Common Stock, Par or Stated Value Per Share |
Face amount or stated value per share of common stock. |
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us-gaap |
Common Stock, Shares Authorized |
The maximum number of common shares permitted to be issued by an entity's charter and bylaws. |
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us-gaap |
Common Stock, Shares, Issued |
Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. |
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us-gaap |
Common Stock, Shares, Outstanding |
Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. |
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us-gaap |
Common Stock, Value, Issued |
Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity. |
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us-gaap |
Comprehensive Income (Loss), Net of Tax, Attributable to Parent |
Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. |
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us-gaap |
Consolidated Oil and Gas Production Costs Per Unit of Production |
The average consolidated production costs (lifting costs) per unit of production. Costs may include costs incurred to operate and maintain wells and equipment and to pay production taxes. |
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us-gaap |
Costs Incurred, Acquisition of Oil and Gas Properties with Proved Reserves |
Costs incurred, including capitalized costs and costs charged to expense, associated with the acquisition of oil and gas properties that have proved reserves. |
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us-gaap |
Current Foreign Tax Expense (Benefit) |
Amount of current foreign income tax expense (benefit) pertaining to income (loss) from continuing operations. |
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us-gaap |
Current Income Tax Expense (Benefit) |
Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations. |
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us-gaap |
Current State and Local Tax Expense (Benefit) |
Amount of current state and local tax expense (benefit) pertaining to income (loss) from continuing operations. |
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us-gaap |
Debt Instrument, Face Amount |
Face (par) amount of debt instrument at time of issuance. |
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us-gaap |
Debt Instrument, Fee Amount |
Amount of the fee that accompanies borrowing money under the debt instrument. |
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us-gaap |
Debt Instrument, Interest Rate, Stated Percentage |
Contractual interest rate for funds borrowed, under the debt agreement. |
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us-gaap |
Debt Instrument, Periodic Payment, Interest |
Amount of the required periodic payments applied to interest. |
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us-gaap |
Debt Instrument, Unamortized Discount |
Amount, after accumulated amortization, of debt discount. |
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us-gaap |
Debtor Reorganization Items, Legal and Advisory Professional Fees |
Amount of reorganization items related to legal and advisory professional fees related to entities in bankruptcy. |
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us-gaap |
Debtor Reorganization Items, Write-off of Debt Issuance Costs and Debt Discounts |
Amount of write-off of debt issuance costs and debt discounts related to prepetition debt obligations. |
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us-gaap |
Decrease Due to Sales of Minerals in Place |
Amount of decrease in standardized measure of discounted future net cash flow as a result of sales of minerals in place. |
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us-gaap |
Debt Issuance Costs, Gross |
Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. |
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us-gaap |
Deferred Foreign Income Tax Expense (Benefit) |
Amount of deferred foreign income tax expense (benefit) pertaining to income (loss) from continuing operations. |
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us-gaap |
Deferred Income Tax Expense (Benefit) |
Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations. |
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us-gaap |
Deferred Income Taxes and Tax Credits |
Amount of deferred income tax expense (benefit) and income tax credits. |
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us-gaap |
Deferred Tax Assets, Net of Valuation Allowance |
Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. |
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us-gaap |
Deferred Tax Assets, Operating Loss Carryforwards, Domestic |
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards. |
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us-gaap |
Deferred Tax Assets, Operating Loss Carryforwards, Foreign |
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign operating loss carryforwards. |
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us-gaap |
Deferred Tax Assets, Other |
Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other. |
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us-gaap |
Deferred Tax Assets, Tax Credit Carryforwards, Foreign |
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign tax credit carryforwards. |
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us-gaap |
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost |
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation. |
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us-gaap |
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Asset Retirement Obligations |
Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from asset retirement obligations. An asset retirement obligation is a legal obligation associated with the disposal or retirement from service of a tangible long-lived asset. |
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us-gaap |
Deferred Tax Assets, Valuation Allowance |
Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. |
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us-gaap |
Deferred Tax Liabilities, Net |
Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting. |
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us-gaap |
Deferred Tax Liabilities, Net, Noncurrent |
Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences, with jurisdictional netting and classified as noncurrent. |
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us-gaap |
Deferred Tax Liabilities, Other |
Amount of deferred tax liability attributable to taxable temporary differences classified as other. |
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us-gaap |
Deferred Tax Liabilities, Tax Deferred Income |
Amount of deferred tax liability attributable to taxable temporary differences from tax deferred revenue or income classified as other. |
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us-gaap |
Depletion of Oil and Gas Properties |
The noncash expense charged against earnings to recognize the consumption of oil and gas reserves that are part of an entities' assets. |
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us-gaap |
Deposits Assets, Noncurrent |
Carrying value of amounts transferred to third parties for security purposes that are expected to be returned or applied towards payment after one year or beyond the operating cycle, if longer. |
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us-gaap |
Depreciation, Depletion and Amortization |
The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. |
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us-gaap |
Derivative Asset, Current |
Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset. |
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us-gaap |
Derivative Assets (Liabilities), at Fair Value, Net |
Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments. |
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us-gaap |
Derivative Asset, Noncurrent |
Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset. |
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us-gaap |
Derivative, Average Variable Interest Rate |
Average variable interest rate related to the group of interest rate derivatives. |
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us-gaap |
Derivative, Cash Received on Hedge |
The amount of cash received during the period on settlement of a hedge. |
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us-gaap |
Derivative, Cost of Hedge |
The premium (cost) of a hedge, expensed during the period. |
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us-gaap |
Derivative Liability, Fair Value, Gross Liability |
Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement. |
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us-gaap |
Derivative, Gain (Loss) on Derivative, Net |
Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. |
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us-gaap |
Derivative Liability, Noncurrent |
Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset. |
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us-gaap |
Development Costs, Period Cost |
The capitalized costs incurred during the period (excluded from amortization) to obtain access to proved reserves and to provide facilities for extracting, treating, gathering and storing the oil and gas. |
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us-gaap |
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves, 10 Percent Annual Discount for Estimated Timing of Cash Flows (Deprecated 2014-01-31) |
This is the amount that is derived from using a discount rate of ten percent a year to reflect the timing of the future net cash flows relating to proved oil and gas reserves. |
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us-gaap |
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Future Cash Inflows (Deprecated 2014-01-31) |
Amount of estimated future cash inflows from sale of proved oil and gas reserves. |
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us-gaap |
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Future Development Costs (Deprecated 2013-01-31) |
The future cost of developing oil and gas from proved reserves located in this geographic region. |
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us-gaap |
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Future Development Costs (Deprecated 2014-01-31) |
Amount of estimated future cost to be incurred in developing proved oil and gas reserves. |
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us-gaap |
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Future Income Tax Expense (Deprecated 2013-01-31) |
The estimated future income tax expenses that will be incurred based on the future income less future expenses derived from production and sale of proved oil and gas reserves in this geographic region. |
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us-gaap |
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Future Income Tax Expense (Deprecated 2014-01-31) |
Amount of estimated future income tax expense to be incurred based on the future income less future expense derived from production and sale of proved oil and gas reserves. |
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us-gaap |
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Future Net Cash Flows (Deprecated 2014-01-31) |
Amount of estimated net future cash inflows, after subtracting future development and production costs and future income tax expenses, from sale of proved oil and gas reserves. |
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us-gaap |
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Future Production Costs (Deprecated 2013-01-31) |
The future cost of producing oil and gas from proved reserves located in this geographic region. |
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us-gaap |
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Future Production Costs (Deprecated 2014-01-31) |
Amount of estimated future cost to be incurred in producing proved oil and gas reserves. |
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us-gaap |
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Standardized Measure (Deprecated 2014-01-31) |
This amount is the future net cash flows less the computed discount. |
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us-gaap |
Due from Related Parties, Current |
The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle). |
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us-gaap |
Due to Related Parties, Current |
Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer). |
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us-gaap |
Due to Related Parties |
Carrying amount as of the balance sheet date of obligations due all related parties. |
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us-gaap |
Earnings Per Share, Basic |
The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. |
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us-gaap |
Earnings Per Share, Basic and Diluted |
The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. |
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us-gaap |
Earnings Per Share, Diluted |
The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. |
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us-gaap |
Effective Income Tax Rate Reconciliation, Percent |
Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. |
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us-gaap |
Employee Service Share-based Compensation, Cash Received from Exercise of Stock Options (Deprecated 2017-01-31) |
Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements. |
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us-gaap |
Equity Method Investment, Ownership Percentage |
The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. |
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us-gaap |
Extensions, Discoveries, Additions and Improved Recovery, Less Related Costs |
Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of extensions, discoveries and improved recovery of proved oil and gas reserves. |
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us-gaap |
Extinguishment of Debt, Amount |
Gross amount of debt extinguished. |
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us-gaap |
Foreign Currency Transaction Gain, before Tax |
Amount before tax of foreign currency transaction realized and unrealized gain recognized in the income statement. |
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us-gaap |
Foreign Currency Transaction Gain (Loss), before Tax |
Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement. |
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us-gaap |
Foreign Currency Transaction Gain (Loss), Realized |
Amount before tax of foreign currency transaction realized gain (loss) recognized in the income statement. |
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us-gaap |
Foreign Currency Transaction Gain (Loss), Unrealized |
Amount before tax of foreign currency transaction unrealized gain (loss) recognized in the income statement. |
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us-gaap |
Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Cash Inflows |
Amount of estimated future accumulated cash inflow from the sale of proved oil and gas reserves. |
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us-gaap |
Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Development Costs |
Amount of estimated future accumulated cash outflow for costs to be incurred in developing proved oil and gas reserves. |
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us-gaap |
Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Income Tax Expense |
Amount of estimated future accumulated cash outflow for income tax, based on the future income less future expense derived from production and sale of proved oil and gas reserves. |
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us-gaap |
Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Net Cash Flows |
Amount, after future accumulated cash outflow for development and production costs and future income tax, of estimated future accumulated cash inflow from the sale of proved oil and gas reserves. |
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us-gaap |
Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Production Costs |
Amount of estimated future accumulated cash outflow for costs to be incurred in producing proved oil and gas reserves. |
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us-gaap |
Future Net Cash Flows Relating to Proved Oil and Gas Reserves, Ten Percent Annual Discount for Estimated Timing of Cash Flows |
Amount of discount on future accumulated cash inflow, after deducting future accumulated cash outflow for development and production costs and future income tax, from sale of proved oil and gas reserves, using a discount rate of ten percent a year. |
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us-gaap |
Gain (Loss) on Derivative Instruments, Net, Pretax |
Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects. |
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us-gaap |
Gain (Loss) on Sale of Derivatives |
The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings. |
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us-gaap |
Gain (Loss) on Disposition of Oil and Gas Property |
Amount of gain (loss) on sale or disposal of proven and unproven oil and gas properties. |
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us-gaap |
Gain (Loss) on Disposition of Proved Property |
Amount of gain (loss) on sale or disposal of property with proven oil and gas reserves. |
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us-gaap |
Gain (Loss) on Disposition of Unproved Property |
Amount of gain (loss) on sale or disposal of property without proven oil and gas reserves. |
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us-gaap |
Gain (Loss) on Extinguishment of Debt |
Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. |
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us-gaap |
Gas Balancing Volume Amount |
The amount of the gas imbalance in terms of units of measure (Mcf) as of the end of the period. |
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us-gaap |
Impairment of Long-Lived Assets to be Disposed of |
The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale. |
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us-gaap |
Impairment of Oil and Gas Properties |
The expense recorded to reduce the value of oil and gas assets consisting of proved properties and unproved properties as the estimate of future successful production from these properties is reduced. |
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us-gaap |
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest |
Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. |
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us-gaap |
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest |
Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments. |
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us-gaap |
Income Tax Expense (Benefit) |
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. |
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us-gaap |
Income Tax Expense (Benefit), Continuing Operations (Deprecated 2013-01-31) |
The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to pretax Income or Loss from continuing operations; income tax expense or benefit may include interest and penalties on tax uncertainties based on the entity's accounting policy. |
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us-gaap |
Income Taxes Paid |
The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income. |
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us-gaap |
Income Taxes Receivable, Current |
Carrying amount due within one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. |
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us-gaap |
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount |
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets. |
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us-gaap |
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount |
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations, attributable to increase (decrease) in the income tax rates. |
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us-gaap |
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount |
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign income tax expense (benefit). |
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us-gaap |
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount |
The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations. |
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us-gaap |
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount |
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments. |
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us-gaap |
Effective Income Tax Rate Reconciliation, Prior Year Income Taxes, Amount |
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to revisions of previously reported income tax expense (benefit). |
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us-gaap |
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount |
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to repatriation of foreign earnings. |
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us-gaap |
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount |
Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit). |
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us-gaap |
Increase (Decrease) in Accounts Payable |
The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. |
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us-gaap |
Increase (Decrease) in Accounts Payable and Accrued Liabilities |
The increase (decrease) during the reporting period in the amounts payable to vendors for goods and services received and the amount of obligations and expenses incurred but not paid. |
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us-gaap |
Increase (Decrease) in Accounts Receivable |
The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services. |
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us-gaap |
Liabilities, Current |
Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer. |
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us-gaap |
Increase (Decrease) in Income Taxes Payable |
The increase (decrease) during the period in the amount due for taxes based on the reporting entity's earnings or attributable to the entity's income earning process (business presence) within a given jurisdiction. |
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us-gaap |
Increase (Decrease) in Deposits |
The net cash inflow or outflow for the increase (decrease) in the beginning and end of period deposits balances. |
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us-gaap |
Increase (Decrease) in Deposits Outstanding |
The increase (decrease) during the reporting period in monies given as security or collateral for items acquired or borrowed on a temporary basis. Deposits may also be paid as initial payment of the cost of acquisition or for the right to enter into a contract or agreement. |
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us-gaap |
Increase (Decrease) in Due from Other Related Parties, Current |
Amount of increase (decrease) in related party receivables classified as other, due within one year or operating cycle, if longer. |
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us-gaap |
Increase (Decrease) in Due from Related Parties, Current |
The aggregate increase (decrease) during the reporting period in the amount due from the following types of related parties: a parent company and its subsidiaries; subsidiaries of a common parent; an entity and trust for the benefit of employees, such as pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; an entity and its principal owners, management, or member of their immediate families, affiliates, or other parties with the ability to exert significant influence. |
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us-gaap |
Changes in Estimated Future Development Costs |
Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of change in estimated future development costs. |
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us-gaap |
Changes in Future Income Tax Expense Estimates on Future Cash Flows Related to Proved Oil and Gas Reserves |
Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of change in the estimated future income tax on future pretax net cash flows related to the entity's proved oil and gas reserves. |
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us-gaap |
Increase (Decrease) in Income Taxes Receivable |
The increase (decrease) during the reporting period in income taxes receivable, which represents the amount due from tax authorities for refunds of overpayments or recoveries of income taxes paid. |
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us-gaap |
Increase (Decrease) in Other Operating Assets |
Amount of increase (decrease) in operating assets classified as other. |
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us-gaap |
Increase (Decrease) in Other Receivables |
Amount of increase (decrease) in receivables classified as other. |
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us-gaap |
Increase (Decrease) in Prepaid Expense |
The increase (decrease) during the reporting period in the amount of outstanding money paid in advance for goods or services that bring economic benefits for future periods. |
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us-gaap |
Increase Due to Purchases of Minerals in Place |
Amount of increase in standardized measure of discounted future net cash flow as a result of purchases of minerals in place. |
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us-gaap |
Incremental Common Shares Attributable to Dilutive Effect of Call Options and Warrants |
Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of call options and warrants using the treasury stock method. |
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us-gaap |
Interest Expense |
Amount of the cost of borrowed funds accounted for as interest expense. |
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us-gaap |
Interest Expense, Debt |
Amount of the cost of borrowed funds accounted for as interest expense for debt. |
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us-gaap |
Interest Paid, Including Capitalized Interest, Operating and Investing Activities |
Amount of cash paid for interest, including, but not limited to, capitalized interest and payment to settle zero-coupon bond attributable to accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount; classified as operating and investing activities. |
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us-gaap |
Investment Banking, Advisory, Brokerage, and Underwriting Fees and Commissions |
Amount of fees and commissions from banking, advisory, brokerage, and securities underwriting activities. Activities include, but are not limited to, underwriting securities, private placements of securities, investment advisory and management services, merger and acquisition services, sale and servicing of mutual funds, and other related consulting fees. |
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us-gaap |
Investment Income, Dividend |
Amount of dividend income on nonoperating securities. |
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us-gaap |
Investment Income, Interest |
Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities. |
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us-gaap |
Investment Income, Interest and Dividend |
Amount before accretion (amortization) of purchase discount (premium) of interest income and dividend income on nonoperating securities. |
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us-gaap |
Operating Leases, Rent Expense |
Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. |
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us-gaap |
Liabilities |
Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future. |
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us-gaap |
Liabilities and Equity |
Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any. |
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us-gaap |
Marketable Securities, Noncurrent |
Amount of investment in marketable security, classified as noncurrent. |
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us-gaap |
Marketable Securities, Unrealized Gain (Loss) |
Amount of unrealized gain (loss) on investment in marketable security. |
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us-gaap |
Net Cash Provided by (Used in) Financing Activities |
Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. |
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us-gaap |
Net Cash Provided by (Used in) Financing Activities, Continuing Operations |
Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. |
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us-gaap |
Net Cash Provided by (Used in) Investing Activities |
Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. |
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us-gaap |
Net Cash Provided by (Used in) Investing Activities, Continuing Operations |
Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. |
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us-gaap |
Net Cash Provided by (Used in) Operating Activities |
Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. |
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us-gaap |
Net Income (Loss) Attributable to Parent |
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. |
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us-gaap |
Net Increase (Decrease) in Sales and Transfer Prices and Production Costs |
Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of change in sales and transfer prices and in production (lifting) costs related to future production. |
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us-gaap |
Nonoperating Income (Expense) |
The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). |
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us-gaap |
Notes Payable, Current |
Sum of the carrying values as of the balance sheet date of the portions of long-term notes payable due within one year or the operating cycle if longer. |
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us-gaap |
Oil and Gas Joint Interest Billing Receivables, Current |
Current portion of accounts receivable attributable to joint interest partners in oil and gas properties. These are billings to the non-operators associated with the operation of wells and are based on those owners' working interests in the wells. For classified balance sheets, represents the current amount receivable, that is amounts expected to be collected within one year or the normal operating cycle, if longer. |
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us-gaap |
Oil and Gas Production Expense (Deprecated 2018-01-31) |
Costs incurred to operate and maintain an entities' wells and related equipment and facilities, including depreciation and applicable operating costs of support equipment and facilities and other costs of operating and maintaining those wells and related equipment and facilities. |
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us-gaap |
Oil and Gas Property, Full Cost Method, Depletion |
Depletion of oil and gas property carried under the full cost method. |
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us-gaap |
Oil and Gas Property, Full Cost Method, Net |
Oil and gas properties, net of depletion, carried under the full cost method. |
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us-gaap |
Oil and Gas Revenue (Deprecated 2018-01-31) |
Aggregate revenue during the period related to oil and gas business activities. |
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us-gaap |
Operating Expenses |
Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense. |
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us-gaap |
Operating Income (Loss) |
The net result for the period of deducting operating expenses from operating revenues. |
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us-gaap |
Operating Leases, Future Minimum Payments Receivable |
Future minimum rental payments in aggregate as of the balance sheet date under operating leases. |
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us-gaap |
Operating Leases, Future Minimum Payments Receivable, Current |
Future rental payments receivable within one year of the balance sheet date under an operating lease. |
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us-gaap |
Operating Leases, Future Minimum Payments Receivable, in Three Years |
Future rental payments receivable within the third year from the balance sheet date under an operating lease. |
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us-gaap |
Operating Leases, Future Minimum Payments Receivable, in Two Years |
Future rental payments receivable within the second year from the balance sheet date under an operating lease. |
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us-gaap |
Other Assets, Noncurrent |
Amount of noncurrent assets classified as other. |
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us-gaap |
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent |
Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to parent entity. |
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us-gaap |
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax |
Amount after tax, before reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature. |
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us-gaap |
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax, Portion Attributable to Parent |
Amount of tax expense (benefit), after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to parent entity. |
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us-gaap |
Other Comprehensive Income (Loss), before Tax |
Amount before tax, after reclassification adjustments of other comprehensive income (loss). |
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us-gaap |
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax |
Amount of tax expense (benefit), after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature. |
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us-gaap |
Other Cost and Expense, Operating |
The total amount of other operating cost and expense items that are associated with the entity's normal revenue producing operation. |
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us-gaap |
Other Loans Payable, Current |
Amount of long-term loans classified as other, payable within one year or the operating cycle, if longer. |
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us-gaap |
Other Loans Payable, Long-term, Noncurrent |
Amount of long-term loans classified as other, payable after one year or the operating cycle, if longer. |
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us-gaap |
Other Nonoperating Income (Expense) |
Amount of income (expense) related to nonoperating activities, classified as other. |
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us-gaap |
Other Significant Noncash Transaction, Value of Consideration Received |
"The value of the noncash (or part noncash) consideration received in a transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. ""Part noncash"" refers to that portion of a transaction not resulting in cash receipts or cash payments in the period." |
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us-gaap |
Payments for Other Fees |
Amount of cash outflow for fees classified as other. |
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us-gaap |
Payments for (Proceeds from) Other Investing Activities |
Amount of cash (inflow) outflow from investing activities classified as other. |
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us-gaap |
Payments for Repurchase of Common Stock |
The cash outflow to reacquire common stock during the period. |
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us-gaap |
Payments of Financing Costs |
The cash outflow for loan and debt issuance costs. |
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us-gaap |
Payments to Acquire Available-for-sale Securities, Equity |
The cash outflow to acquire equity securities classified as available-for-sale securities, because they are not classified as trading securities. |
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us-gaap |
Payments to Acquire Equity Method Investments |
The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence. |
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us-gaap |
Payments to Acquire Marketable Securities |
Amount of cash outflow for purchase of marketable security. |
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us-gaap |
Payments to Acquire Mineral Rights |
The cash outflow from the acquisition of a mineral right which is the right to extract a mineral from the earth or to receive payment, in the form of royalty, for the extraction of minerals. |
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us-gaap |
Payments to Acquire Oil and Gas Property |
The cash outflow to purchase of mineral interests in oil and gas properties for use in the normal oil and gas operations and not intended for resale. |
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us-gaap |
Payments to Acquire Property, Plant, and Equipment |
The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. |
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us-gaap |
Payments to Acquire Restricted Certificates of Deposit |
The cash outflow from temporary investment with specific maturity and interest rate that are prohibited for current use. |
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us-gaap |
Prepaid Expense, Current |
Amount of asset related to consideration paid in advance for costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer. |
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us-gaap |
Prepayment Fees on Advances, Net |
Amount of income earned, after hedging basis adjustments, from fees charged for prepayment of certain Federal Home Loan Bank (FHLBank) advances before original maturity. |
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us-gaap |
Previously Estimated Development Costs Incurred During Period (Deprecated 2015-01-31) |
Amount of (increase) decrease in standardized measure of discounted future net cash flow as a result of previously estimated development costs incurred. |
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us-gaap |
Proceeds from Issuance of Common Stock |
The cash inflow from the additional capital contribution to the entity. |
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us-gaap |
Proceeds from Issuance of Long-term Debt |
The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. |
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us-gaap |
Proceeds from Issuance of Other Long-term Debt |
Amount of cash inflow from issuance of long-term debt classified as other. |
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us-gaap |
Proceeds from Notes Payable |
The cash inflow from a borrowing supported by a written promise to pay an obligation. |
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us-gaap |
Proceeds from Sale of Equity Method Investments |
The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence. |
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us-gaap |
Proceeds from Sale of Oil and Gas Property and Equipment |
The cash inflow to dispose of long-lived, physical assets and mineral interests in oil and gas properties used for normal oil and gas operations. |
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us-gaap |
Proceeds from Sale of Other Productive Assets |
Amount of cash inflow from the sale of tangible or intangible assets used to produce goods or deliver services, classified as other. |
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us-gaap |
Proceeds from Sale of Property Held-for-sale |
The cash inflow from the sale of formerly productive land held for sale, anything permanently fixed to it, including buildings, structures on it, and so forth. |
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us-gaap |
Write off of Deferred Debt Issuance Cost |
Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt. |
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us-gaap |
Proceeds from Stock Options Exercised |
Amount of cash inflow from exercise of option under share-based payment arrangement. |
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us-gaap |
Production, Barrels of Oil Equivalents (Deprecated 2013-01-31) |
This element represents the number of barrel of oil equivalents (BOE) which is a measurement used by oil and gas companies as a way of combining oil and natural gas reserves and production into a single measurement. Natural gas volumes are converted to BOE based on the energy content of 6,000 cubic feet of gas to one barrel of oil. |
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us-gaap |
Production, Barrels of Oil Equivalents |
Energy measure of oil and natural gas production reserves. |
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us-gaap |
Productive Oil Wells, Number of Wells, Gross |
The total number of producing oil wells and oil wells capable of production, in which the entity owns an undivided working interest. |
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us-gaap |
Professional Fees |
A fee charged for services from professionals such as doctors, lawyers and accountants. The term is often expanded to include other professions, for example, pharmacists charging to maintain a medicinal profile of a client or customer. |
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us-gaap |
Property, Plant and Equipment, Gross |
Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. |
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us-gaap |
Property, Plant and Equipment, Net |
Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. |
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us-gaap |
Proved Developed Reserves (Energy) |
Energy measure of interests in proved developed reserves of crude oil, including condensate and natural gas liquids, natural gas, synthetic oil and gas, or other nonrenewable natural resource that is intended to be upgraded into synthetic oil and gas. |
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us-gaap |
Proved Undeveloped Reserves (Energy) |
Energy measure of proved undeveloped reserves of crude oil, including condensate and natural gas liquids, natural gas, synthetic oil and gas, or other nonrenewable natural resource that is intended to be upgraded into synthetic oil and gas. |
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us-gaap |
Proved Undeveloped Reserve (Volume) |
Net quantities of an enterprise's interests in proved undeveloped reserves of either crude oil (including condensate and natural gas liquids), natural gas, synthetic oil and gas, or other renewable natural resource that is intended to be upgraded into synthetic oil and gas as of the beginning and the end of the year. "Net" quantities of reserves include those relating to the enterprise's operating and nonoperating interests in properties. Quantities of reserves relating to royalty interests owned are included in "net" quantities if the necessary information is available to the enterprise. "Net" quantities does not include reserves relating to interests of others in properties owned by the enterprise. The unit of measure for reserve quantities is defined as "barrels" for oil and synthetic oil reserves or "cubic feet" or "cubic meters" for natural gas and synthetic gas reserves. |
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us-gaap |
Related Party Transaction, Amounts of Transaction |
Amount of transactions with related party during the financial reporting period. |
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us-gaap |
Related Party Transaction, Purchases from Related Party |
Purchases during the period (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. |
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us-gaap |
Reorganization Items |
Total amount of reorganization items. |
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us-gaap |
Repayments of Debt |
The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations. |
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us-gaap |
Repayments of Long-term Debt |
The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. |
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us-gaap |
Restricted Cash and Cash Equivalents, Noncurrent |
Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. |
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us-gaap |
Results of Operations, Income Tax Expense |
Income tax expense for oil and gas producing activities. |
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us-gaap |
Results of Operations, Oil and Gas Producing Activities Net Income (Excluding Corporate Overhead and Interest Costs) |
The results of operations for oil and gas producing activities, excluding corporate overhead and interest costs. |
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us-gaap |
Results of Operations, Revenue from Oil and Gas Producing Activities |
Total revenues from oil and gas producing activities. |
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us-gaap |
Revisions of Previous Quantity Estimates |
Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of revisions of estimated quantity of oil and gas in proved reserves. |
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us-gaap |
Sales and Transfers of Oil and Gas Produced, Net of Production Costs |
Amount of (increase) decrease in standardized measure of discounted future net cash flow as a result of sales and transfers of oil and gas produced. |
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us-gaap |
Severance Costs |
Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation. |
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us-gaap |
Share-based Payment Arrangement, Noncash Expense |
Amount of noncash expense for share-based payment arrangement. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Payments |
The estimated amount of dividends to be paid to holders of the underlying shares (expected dividends) over the option's term. Dividends are taken into account because payment of dividends to shareholders reduces the fair value of the underlying shares, and option holders generally do not receive dividends. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate |
The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate |
The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate |
The risk-free interest rate assumption that is used in valuing an option on its own shares. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number |
The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price |
The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period |
Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period |
The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures |
Net number of share options (or share units) granted during the period. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Grant Date Intrinsic Value |
The grant-date intrinsic value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |
Gross number of share options (or share units) granted during the period. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value |
The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value |
Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number |
Number of options outstanding, including both vested and non-vested options. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price |
Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. |
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us-gaap |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price |
Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. |
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us-gaap |
Stock Issued |
The fair value of stock issued in noncash financing activities. |
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us-gaap |
Stock Issued During Period, Shares, New Issues |
Number of new stock issued during the period. |
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us-gaap |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period |
Number of share options (or share units) exercised during the current period. |
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us-gaap |
Stock Issued During Period, Value, Acquisitions |
Value of stock issued pursuant to acquisitions during the period. |
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us-gaap |
Development Stage Entities, Stock Issued, Value, Issued for Cash (Deprecated 2015-01-31) |
Value of shares issued as consideration for cash for development stage entities. |
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us-gaap |
Stock Issued During Period, Value, New Issues |
Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering. |
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us-gaap |
Stock Issued During Period, Value, Stock Options Exercised |
Value of stock issued as a result of the exercise of stock options. |
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us-gaap |
Stock Repurchased and Retired During Period, Value |
Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital). |
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us-gaap |
Unamortized Debt Issuance Expense |
The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset. |
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us-gaap |
Unrealized Gain (Loss) on Derivatives |
The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period. |
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us-gaap |
Unrealized Gain (Loss) on Securities |
Amount of unrealized gain (loss) recognized in the income statement on unsold other securities. |
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us-gaap |
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount |
Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. |
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us-gaap |
Weighted Average Number of Shares Outstanding, Diluted |
The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. |
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us-gaap |
Weighted Average Number of Shares Outstanding, Basic |
Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. |
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us-gaap |
Wells in Process of Drilling |
The number of wells in the process of being drilled in each geographic area as of the date listed. |
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us-gaap |
Workers' Compensation Discount, Percent |
Percent discount applied to worker's compensation reserve liability to reduce the reserve to present value. |
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