Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Accounts Payable and Accrued Liabilities, Current [Abstract]
Capital expenditures	$ 164,620	$ 107,009
Revenue and severance tax payable	60,328	39,617
Lease operating expense	22,078	15,956
Property taxes	13,222	6,606
Compensation	39,471	34,761
Derivative settlements	12,644	6,473
Interest	45,057	45,059
Other	29,210	44,227
Total accounts payable and accrued expenses	$ 386,630	$ 299,708