CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net Income	$ 2,475	$ 20,303
Other Comprehensive Income:
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($1,214), ($781))	3,624	2,460
Unrecognized Loss on Derivatives:
Unrealized Loss on Cash Flow Hedges (Net of tax: $933, $0)	(2,773)	0
Other Comprehensive Income	851	2,460
Comprehensive Income	3,326	22,763
Less: Comprehensive Income Attributable to Noncontrolling Interest	123	5,867
Comprehensive Income Attributable to CONSOL Energy Inc. Shareholders	$ 3,203	$ 16,896