Supplemental Disclosures (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Summary of current accrued liabilities
Total accrued liabilities	$ 93,339	$ 92,369
Accrued evaluated and unproved and unevaluated property costs
Summary of current accrued liabilities
Total accrued liabilities	44,551	54,586
Accrued support equipment and facilities costs
Summary of current accrued liabilities
Total accrued liabilities	14,990	17,393
Accrued lease operating expenses
Summary of current accrued liabilities
Total accrued liabilities	13,097	7,743
Accrued interest on debt
Summary of current accrued liabilities
Total accrued liabilities	12,741	5,806
Accrued asset retirement obligations
Summary of current accrued liabilities
Total accrued liabilities	29	254
Accrued partners’ share of joint interest charges
Summary of current accrued liabilities
Total accrued liabilities	5,646	4,565
Other
Summary of current accrued liabilities
Total accrued liabilities	$ 2,285	$ 2,022