Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Components of the provision for income taxes
Current Federal Tax (Expense) Benefit	$ 0	$ 0	$ 3,826
Current State and Local Tax (Expense) Benefit	(373)	(449)	(1,618)
Deferred portion of income tax (expense) benefit	(9,565)	192,540	41,835
Income tax (expense) benefit	$ (9,938)	$ 192,091	$ 44,043
Effective tax rate (as a percent)	21.50%	20.10%	19.10%
Deferred income taxes [Abstract]
Deferred tax liabilities, oil and gas properties	$ 117,085	$ 83,816
Deferred tax liabilities, other	4,835	10,054
Total deferred tax liabilities	121,920	93,870
Deferred tax assets, derivative liabilities	69,283	36,311
Deferred Tax Assets, Asset Retirement Obligation Liabilities	21,899	18,424
Deferred tax assets, debt discount and deferred financing costs	20,551	23,925
Deferred tax assets, pension	7,413	7,183
Deferred tax assets, federal and state tax net operating loss carryovers	3,299	3,898
Deferred tax assets, stock compensation	2,246	2,701
Deferred tax assets, credit carryover	897	7,543
Deferred tax assets, other liabilities	5,024	7,273
Total deferred tax assets	130,612	107,258
Deferred tax assets, valuation allowance	(18,461)	(13,388)
Net deferred tax assets	112,151	93,870
Total net deferred tax liabilities	9,769	0
State and local jurisdiction [Member]
Deferred income taxes [Abstract]
Current state income tax payable	362	$ 853
Net operating loss carryforwards	4,200
Internal Revenue Service (IRS) [Member] | Domestic tax authority [Member] | Research and development tax credit carryforward [Member]
Deferred income taxes [Abstract]
Deferred tax assets, credit carryover	$ 900