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Area of land held.

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The consolidated unit of measure used for production costs. Units of production are expressed in common units of production with oil or gas converted to a common unit of measure on the basis used in computing amortization (relative energy content or gross revenue method). This may be barrel of oil equivalents (BOE) or Mcfe (million cubic feet equivalents) if different types of gas products (for example, gas, condensate, and NGLs) are consolidated.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of cash inflow from exercise of stock options granted under share-based compensation arrangement.

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A description of the related party transaction, including transactions to which no amounts or nominal amounts were ascribed and such other information deemed necessary to an understanding of the effects of the transactions on the financial statements. Examples of common related party transactions are, sales, purchases and transfers of realty and personal property, services received or furnished, loans and leases to and from top management and affiliates.

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Percentage of subsidiary's or equity investee's stock owned by parent company after stock transaction.

No definition available.

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Number of share options (or share units) exercised during the current period.

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