Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Operating leases	$ 16,720	$ 15,196
Short-term leases	18,626	15,451
Financing leases
Depreciation of assets	747	976
Interest on lease liabilities	123	134
Total financing leases	870	1,110
Total lease expense	36,216	31,757
Lease operating
Lessee, Lease, Description [Line Items]
Operating leases	12,994	11,877
Short-term leases	12,890	10,441
Plant and other midstream services
Lessee, Lease, Description [Line Items]
Operating leases	28	110
Short-term leases	5,689	4,983
General and administrative
Lessee, Lease, Description [Line Items]
Operating leases	3,698	3,209
Short-term leases	47	27
Drilling Rig Leases
Financing leases
Gross payments	33,600	28,100
Drilling Rig Leases And Other Equipment Rentals
Financing leases
Gross payments	$ 65,300	$ 90,300