Leases (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($)
Lessee, Lease, Description [Line Items]
Operating Lease, Liability	$ 12,583
Operating lease costs	1,260
Variable Lease, Cost	3,223
Short-term Lease, Cost	51,348
Lease, Cost	55,831
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	7,002
Operating cash flows from operating leases	$ 228
Operating Lease, Weighted Average Remaining Lease Term	9 years 9 months 18 days
Weighted average discount rate	4.10%
Drilling rig commitments [Member]
Lessee, Lease, Description [Line Items]
Operating Lease, Liability	$ 6,048
Surface use agreements [Member]
Lessee, Lease, Description [Line Items]
Operating Lease, Liability	5,091
Field equipment [Member]
Lessee, Lease, Description [Line Items]
Operating Lease, Liability	1,105
Other [Member]
Lessee, Lease, Description [Line Items]
Operating Lease, Liability	$ 339