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Additional Balance Sheet Information - Components of Balance Sheet Amounts (Detail) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Accounts Receivable: |  |
Joint interest billings | $ 2,667 | $ 2,882
Trade receivables | 1,452 | 1,980
Oil and gas sales | 3,576 | 6,245
Other | 2,377 | 1,751
Accounts Receivable, Gross | 10,072 | 12,858
Less: Allowance for doubtful accounts | (529) | (543)
Total | 9,543 | 12,315
Accounts Payable: |  |
Trade | 3,289 | 3,995
Royalty and other owners | 5,973 | 8,444
Partner advances | 1,083 | 1,344
Prepaid drilling deposits | 390 | 786
Other | 1,620 | 1,689
Total | 12,355 | 16,258
Accrued Liabilities: |  |
Compensation and related expenses | 2,294 | 2,350
Property costs | 3,302 | 9,204
Income tax |  | 554
Other | 526 | 293
Total | $ 6,122 | $ 12,401

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