CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net Income	$ 20,303	$ 70,958
Other Comprehensive Income:
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($781), ($1,281))	2,460	3,997
Other Comprehensive Income	2,460	3,997
Comprehensive Income	22,763	74,955
Less: Comprehensive Income Attributable to Noncontrolling Interest	5,867	8,548
Comprehensive Income Attributable to CONSOL Energy Inc. Shareholders	$ 16,896	$ 66,407