Leases (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Jan. 01, 2019	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020		Sep. 30, 2019		Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Operating Lease, Right-of-Use Asset		$ 2,625		$ 2,625				$ 2,740
Operating Lease, Payments		236	$ 221	707		$ 442
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 2,500	82	0	388		3,325
Operating Lease, Liability, Current		953	953	953		953		847
Noncurrent operating lease obligations		1,948		1,948				2,232
Operating Lease, Liability		$ 2,901		$ 2,901				$ 3,079
Operating Lease, Weighted Average Remaining Lease Term		3 years 3 months 18 days		3 years 3 months 18 days				4 years 1 month 6 days
Operating Lease, Weighted Average Discount Rate, Percent		3.25%		3.25%				5.97%
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year		$ 236		$ 236
Lessee, Operating Lease, Liability, to be Paid, Year One		936		936
Lessee, Operating Lease, Liability, Payments, Due Year Two		874		874
Lessee, Operating Lease, Liability, Payments, Due after Year Five		145		145
Lessee, Operating Lease, Liability, Payments, Due		3,063		3,063
Lessee, Operating Lease, Liability, Undiscounted Excess Amount		(162)		(162)
Operating Lease, Cost		215	208	645		565
Short-term Lease, Cost		2,675	9,969	18,566		33,024
Variable Lease, Cost		5,754	6,777	16,401		17,420
Amounts charged as dilling costs		(1,978)	(9,224)	(16,309)	[1]	(30,865)	[1]
Lease, Cost		6,666	7,730	19,303	[2]	20,144	[2]
Lessee, Operating Lease, Liability, to be Paid, Year Three		872		872
Estimated Litigation Liability, Current		100		100
Natural Gas, Gathering, Transportation, Marketing and Processing [Member]
Lessee, Lease, Description [Line Items]
Lease, Cost		3,000	8,600	3,900		8,900
Operating Expense [Member]
Lessee, Lease, Description [Line Items]
Lease, Cost		3,500	$ 10,100	3,600		10,700
General and Administrative Expense [Member]
Lessee, Lease, Description [Line Items]
Lease, Cost		$ 200		$ 200		$ 600

[1] 1    Represents the combined gross amounts incurred and (i) capitalized as drilling costs for our working interest share and (ii) billed to joint interest partners for their working interest share for short-term leases of operated drilling rigs.

[2] 2    Includes $3.0 million and $3.9 million and $8.6 million and $8.9 million recognized in Gathering, processing and transportation expense (“GPT”), $3.5 million and $3.6 million and $10.1 million and $10.7 million recognized in Lease operating expense (“LOE”) for the three and nine months ended September 30, 2020 and 2019, respectively, and $0.2 million and $0.6 million recognized in G&A for each of the three and nine months ended September 30, 2020 and 2019, respectively.