Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Numerator:
Income (Loss) from Continuing Operations	$ 146,756	$ (21,796)	$ 753,696	$ 9,005
Less: Net Income Attributable to Noncontrolling Interest	21,727	0	59,090	0
Net Income (Loss) from Continuing Operations Attributable to CNX Resources Shareholders	125,029	(21,796)	694,606	9,005
Income from Discontinued Operations	0	(4,645)	0	95,099
Net Income	$ 125,029	$ (26,441)	$ 694,606	$ 104,104
Denominator:
Weighted-average shares of common stock outstanding (in shares)	210,238,509	230,080,797	216,010,561	229,986,428
Effect of dilutive shares (in shares)	2,469,573	0	2,288,301	1,473,392
Weighted-average diluted shares of common stock outstanding (in shares)	212,708,082	230,080,797	218,298,862	231,459,820
Earnings (Loss) Per Share
Basic (Continuing Operations) (in usd per share)	$ 0.59	$ (0.09)	$ 3.22	$ 0.04
Basic (Discontinued Operations) (in usd per share)	0.00	(0.02)	0.00	0.41
Total Basic Earnings (Loss) Per Share (in usd per share)	0.59	(0.11)	3.22	0.45
Dilutive (Continuing Operations) (in usd per share)	0.59	(0.09)	3.18	0.04
Dilutive (Discontinued Operations) (in usd per share)	0.00	(0.02)	0.00	0.41
Total Dilutive Earnings (Loss) Per Share (in usd per share)	$ 0.59	$ (0.11)	$ 3.18	$ 0.45