Summary of Property and Equipment (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) $ / bbl	Mar. 31, 2019 USD ($) $ / bbl	Dec. 31, 2019 USD ($)
Property, Plant and Equipment [Abstract]
Proved Oil and Gas Property, Full Cost Method	$ 1,487,868		$ 1,409,219
Unproved Oil and Gas Property, Full Cost Method	53,878		53,200
Oil and Gas Property, Full Cost Method, Gross	1,541,746		1,462,419
Other property and equipment	27,355		25,915
Total properties and equipment	1,569,101		1,488,334
Accumulated depreciation, depletion and amortization	(408,542)		(367,909)
Property and equipment, net (successful efforts method)	1,160,559		1,120,425
Unproved Oil and Gas Property excluded	53,900		$ 53,200
Undeveloped Leasehold Costs Transferred	1,400	$ 100
Capitalized Costs, Proved Properties	800	1,000
Interest Costs Capitalized	$ 700	$ 1,200
Amortization Expense Per Physical Unit of Production | $ / bbl	16.73	17.49
Ceiling Test Cushion	$ 350,000