Supplemental Disclosures (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Summary of current accrued liabilities
Total accrued liabilities	$ 200,695	$ 170,855
Other	12,378	9,747
Accrued evaluated and unproved and unevaluated property costs
Summary of current accrued liabilities
Total accrued liabilities	72,376	86,318
Accrued midstream properties costs
Summary of current accrued liabilities
Total accrued liabilities	46,402	16,808
Accrued lease operating expenses
Summary of current accrued liabilities
Total accrued liabilities	18,223	12,705
Accrued interest on debt
Summary of current accrued liabilities
Total accrued liabilities	18,569	22,448
Accrued asset retirement obligations
Summary of current accrued liabilities
Total accrued liabilities	619	1,350
Accrued partners’ share of joint interest charges
Summary of current accrued liabilities
Total accrued liabilities	14,322	17,037
Accrued payable related to purchased natural gas
Summary of current accrued liabilities
Total accrued liabilities	$ 17,806	$ 4,442