Supplemental Disclosures (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Summary of current accrued liabilities
Total accrued liabilities	$ 111,492	$ 101,460
Accrued evaluated and unproved and unevaluated property costs
Summary of current accrued liabilities
Total accrued liabilities	58,299	54,273
Accrued support equipment and facilities costs
Summary of current accrued liabilities
Total accrued liabilities	10,939	15,139
Accrued lease operating expenses
Summary of current accrued liabilities
Total accrued liabilities	11,091	16,009
Accrued interest on debt
Summary of current accrued liabilities
Total accrued liabilities	15,688	6,541
Accrued asset retirement obligations
Summary of current accrued liabilities
Total accrued liabilities	699	915
Accrued partners’ share of joint interest charges
Summary of current accrued liabilities
Total accrued liabilities	9,635	5,572
Other
Summary of current accrued liabilities
Total accrued liabilities	$ 5,141	$ 3,011