Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Total CONSOL Energy Inc. Stockholders' Equity	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive (Loss) Income	Non- Controlling Interest	Impact of ASC 326 Adoption	Impact of ASC 326 Adoption Total CONSOL Energy Inc. Stockholders' Equity	Impact of ASC 326 Adoption Retained Earnings
Beginning balance at Dec. 31, 2019	$ 572,395	$ 435,199	$ 259	$ 523,762	$ 259,903	$ (348,725)	$ 137,196	$ (3,298)	$ (3,298)	$ (3,298)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Loss	(13,214)	(9,755)			(9,755)		(3,459)
Actuarially Determined Long-Term Liability Adjustments, Net of Tax	14,230	14,171				14,171	59
Interest Rate Hedge, Net of Tax	(2,004)	(2,004)				(2,004)
Comprehensive (Loss) Income	(988)	2,412			(9,755)	12,167	(3,400)
Issuance of Common Stock	0		2	(2)
Amortization of Stock-Based Compensation Awards	11,579	11,161		11,161			418
Shares/Units Withheld for Taxes	(863)	(646)		(646)			(217)
Distributions to Noncontrolling Interest	(5,575)	0		0			(5,575)
CCR Merger	(19,731)	108,691	79	108,612			(128,422)
Ending balance at Dec. 31, 2020	$ 553,519	553,519	340	642,887	246,850	(336,558)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting standards update	Accounting Standards Update 2016-13 [Member]
Net Loss	$ 34,110	34,110			34,110	0
Actuarially Determined Long-Term Liability Adjustments, Net of Tax	79,203	79,203			0	79,203
Interest Rate Hedge, Net of Tax	1,721	1,721			0	1,721
Comprehensive (Loss) Income	115,034	115,034			34,110	80,924
Issuance of Common Stock	0	0	5	(5)
Amortization of Stock-Based Compensation Awards	6,632	6,632		6,632
Shares/Units Withheld for Taxes	(2,303)	(2,303)		(2,303)
CCR Merger	(69)	(69)		(266)		197
Ending balance at Dec. 31, 2021	672,813	672,813	345	646,945	280,960	(255,437)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Loss	466,979	466,979			466,979
Actuarially Determined Long-Term Liability Adjustments, Net of Tax	105,396	105,396				105,396
Interest Rate Hedge, Net of Tax	401	401				401
Comprehensive (Loss) Income	572,776	572,776			466,979	105,797
Issuance of Common Stock	0		4	(4)
Repurchases of Common Stock	(7,988)	(7,988)	(2)	(2,333)	(5,653)
Amortization of Stock-Based Compensation Awards	7,890	7,890		7,890
Shares/Units Withheld for Taxes	(6,261)	(6,261)		(6,261)
Dividends on Common Shares	(71,486)	(71,486)			(71,486)
Dividend Equivalents Earned on Stock-Based Compensation Awards	(1,918)	(1,918)			(1,918)
Ending balance at Dec. 31, 2022	$ 1,165,826	$ 1,165,826	$ 347	$ 646,237	$ 668,882	$ (149,640)	$ 0