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Additional Balance Sheet Information - Components of Balance Sheet Amounts (Detail) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2014 | Dec. 31, 2013
--- | --- | ---
Accounts Receivable: |  |
Joint interest billing | $ 3,322 | $ 6,287
Trade receivables | 2,120 | 2,014
Oil and gas sales | 9,441 | 9,604
Other | 2,285 | 122
Accounts Receivable, Gross | 17,168 | 18,027
Less: Allowance for doubtful accounts | (543) | (334)
Total | 16,625 | 17,693
Accounts Payable: |  |
Trade | 3,534 | 1,596
Royalty and other owners | 9,106 | 7,391
Partner advances | 3,160 | 3,378
Prepaid drilling deposits | 340 | 978
Other | 1,754 | 2,906
Total | 17,894 | 16,249
Accrued Liabilities: |  |
Compensation and related expenses | 6,909 | 3,062
Property costs | 7,725 | 3,119
Income tax | 322 | 268
Other | 422 | 383
Total | $ 15,378 | $ 6,832

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