Earnings Per Share - Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Numerator:
Net Income	$ 143,960	$ 146,756	$ 272,004	$ 753,696
Less: Net Income Attributable to Noncontrolling Interest	28,422	21,727	81,325	59,090
Net Income Attributable to CNX Resources Shareholders	$ 115,538	$ 125,029	$ 190,679	$ 694,606
Denominator:
Weighted-average shares of common stock outstanding (in shares)	187,448,749	210,238,509	188,012,044	216,010,561
Effect of dilutive shares (in shares)	982,210	2,469,573	1,548,899	2,288,301
Weighted-average diluted shares of common stock outstanding (in shares)	188,430,959	212,708,082	189,560,943	218,298,862
(Loss) Earnings Per Share
Total Basic (in usd per share)	$ 0.62	$ 0.59	$ 1.01	$ 3.22
Total Diluted (in usd per share)	$ 0.61	$ 0.59	$ 1.01	$ 3.18