Earnings Per Share - Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Numerator:
Net (Loss) Income	$ (130,486)	$ 192,694	$ (435,709)	$ 128,044
Less: Net Income Attributable to Noncontrolling Interest	15,263	30,217	39,126	52,904
Net (Loss) Income Attributable to CNX Resources Shareholders	$ (145,749)	$ 162,477	$ (474,835)	$ 75,140
Denominator:
Weighted-average shares of common stock outstanding (in shares)	187,316,463	191,524,289	187,117,412	194,483,555
Effect of dilutive shares (in shares)	0	1,256,443	0	1,507,800
Weighted-average diluted shares of common stock outstanding (in shares)	187,316,463	192,780,732	187,117,412	195,991,355
(Loss) Earnings per Share
Basic (in usd per share)	$ (0.78)	$ 0.85	$ (2.54)	$ 0.39
Diluted (in usd per share)	$ (0.78)	$ 0.84	$ (2.54)	$ 0.38