Supplemental Disclosures (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Summary of current accrued liabilities
Total accrued liabilities	$ 84,495	$ 92,369
Accrued evaluated and unproved and unevaluated property costs
Summary of current accrued liabilities
Total accrued liabilities	41,423	54,586
Accrued support equipment and facilities costs
Summary of current accrued liabilities
Total accrued liabilities	10,303	17,393
Accrued cost to issue equity
Summary of current accrued liabilities
Total accrued liabilities	216	0
Accrued lease operating expenses
Summary of current accrued liabilities
Total accrued liabilities	10,066	7,743
Accrued interest on debt
Summary of current accrued liabilities
Total accrued liabilities	12,681	5,806
Accrued asset retirement obligations
Summary of current accrued liabilities
Total accrued liabilities	48	254
Accrued partners’ share of joint interest charges
Summary of current accrued liabilities
Total accrued liabilities	4,712	4,565
Accrued stock-based compensation
Summary of current accrued liabilities
Total accrued liabilities	872	0
Other
Summary of current accrued liabilities
Total accrued liabilities	$ 4,174	$ 2,022