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Fair Value Measurements - Additional Information (Detail) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2016 USD ($) Counterparty | Mar. 31, 2015 USD ($) | Dec. 31, 2015 USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Interest and dividends | $ 136 | $ 109 |
Mark-to-market gain (loss) | 259 | 1,400 |
Impairment on natural gas and oil properties | 43,040 | $ 0 |
Allowance for doubtful accounts on accounts receivable | $ 4,477 |  | $ 4,994
Number of financial institutions included in counter parties | Counterparty | 19 |  |
Number of counterparties | Counterparty | 4 |  |
Net derivative asset | $ 9,500 |  |
Western Oklahoma |  |  |
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] |  |  |
Impairment on natural gas and oil properties | $ 43,040 |  |

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