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Acquisitions and Dispositions Pro Forma Financial Information (Details) - Midstream Acquisition [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017
Business Acquisition [Line Items]
Pro Forma Total Revenue and Other Operating Income	$ 395,774	$ 740,411
Pro Forma Net Income from Continuing Operations	150,789	92,979
Less: Pro Forma Net income Attributable to Noncontrolling Interests	18,720	38,134
Pro Forma Net Income from Continuing Operations Attributable to CNX	$ 132,069	$ 54,845
Pro Income Loss per Share from Continuing Operations (Basic) (usd per share)	$ 0.58	$ 0.24
Pro Income Loss per Share from Continuing Operations (Diluted) (usd per share)	$ 0.58	$ 0.24

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+ References

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-Publisher FASB
-Name Accounting Standards Codification
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