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Fair Value Measurements - Additional Information (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
USD ($)
Sep. 30, 2016
USD ($)
Debt Instrument [Line Items]    
Impairment of oil and gas properties $ 29,144 $ 31,082 [1]
8.750% Senior Notes Due April 15, 2019    
Debt Instrument [Line Items]    
Fair value of senior notes $ 96,800 $ 96,800
Debt instrument interest rate 8.75% 8.75%
[1] Restated