CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenue and Other Income:
Revenue from contracts with customers	$ 321,444			$ 313,355			$ 1,049,609	$ 1,102,272
Miscellaneous Other Income	11,188			10,978			36,674	47,234
Gain (Loss) on Sale of Assets	714			(85)			1,986	273
Total Revenue and Other Income	333,346			324,248			1,088,269	1,149,779
Costs and Expenses:
Operating and Other Costs	234,849			222,781			718,410	700,778
Depreciation, Depletion and Amortization	54,370			51,242			151,245	155,674
Freight Expense	3,599			2,443			14,115	37,774
Selling, General and Administrative Costs	14,690			18,526			52,901	47,715
Loss on Debt Extinguishment	801			0			25,444	3,149
Interest Expense, net	15,598			20,862			50,240	63,411
Total Costs and Expenses	323,907			315,854			1,012,355	1,008,501
Earnings Before Income Tax	9,439			8,394			75,914	141,278
Income Tax Expense (Benefit)	2,415			(690)			(243)	8,527
Net Income	7,024	$ 48,830	$ 20,303	9,084	$ 52,709	$ 70,958	76,157	132,751
Less: Net Income Attributable to Noncontrolling Interest	2,684			3,350			14,102	19,447
Net Income Attributable to CONSOL Energy Inc. Shareholders	$ 4,340			$ 5,734			$ 62,055	$ 113,304
Earnings per Share:
Total Basic Earnings per Share (in dollars per share)	$ 0.16			$ 0.20			$ 2.27	$ 4.04
Total Dilutive Earnings per Share (in dollars per share)	$ 0.16			$ 0.20			$ 2.26	$ 3.97
Coal Revenue
Revenue and Other Income:
Revenue from contracts with customers	$ 301,542			$ 294,797			$ 984,665	$ 1,016,503
Terminal Revenue
Revenue and Other Income:
Revenue from contracts with customers	16,303			16,115			50,829	47,995
Freight Revenue
Revenue and Other Income:
Revenue from contracts with customers	$ 3,599			$ 2,443			$ 14,115	$ 37,774