Consolidated Statements of Stockholders' Equity - 9 months ended Sep. 30, 2018 - USD ($) $ in Thousands	Total	Common Stock [Member]	Capital in Excess of Par Value [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Total CNX Resources Corporation Stockholders' Equity [Member]	Noncontrolling Interest [Member]
Beginning Balance at Dec. 31, 2017	$ 3,899,899	$ 2,241	$ 2,450,323	$ 1,455,811	$ (8,476)	$ 3,899,899	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	753,696			694,606		694,606	59,090
Other Comprehensive Income (Net of ($794) Tax)	2,004				2,004	2,004
Comprehensive Income (Loss)	755,700			694,606	2,004	696,610	59,090
Issuance of Common Stock	1,689	7	1,682			1,689
Purchase and Retirement of Common Stock (19,399,032 shares)	(296,734)	(193)	(154,998)	(141,543)		(296,734)
Shares Withheld for Taxes	(5,334)			(4,986)		(4,986)	(348)
Acquisition of CNX Gathering, LLC	718,577						718,577
Amortization of Stock-Based Compensation Awards	15,861		14,086			14,086	1,775
Distributions to CNXM Noncontrolling Interest Holders	(40,839)						(40,839)
Ending Balance at Sep. 30, 2018	$ 5,048,819	$ 2,055	$ 2,311,093	$ 2,003,888	$ (6,472)	$ 4,310,564	$ 738,255