Consolidated Statement of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net (Loss) Income	$ (428,744)	$ 31,948	$ 883,111
Other Comprehensive (Loss) Income:
Actuarially Determined Long-Term Liability Adjustments (Net of tax: $914, $1,664, $(792))	(2,579)	(4,701)	1,672
Comprehensive (Loss) Income	(431,323)	27,247	884,783
Less: Comprehensive Income Attributable to Noncontrolling Interests	55,031	112,678	86,578
Comprehensive (Loss) Income Attributable to CNX Resources Shareholders	$ (486,354)	$ (85,431)	$ 798,205