Represents additional authorized amount of stock and debt repurchase program.

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Represents authorized amount of stock and debt repurchase program.

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Total cost of shares purchased divided by the total number of shares purchased from affiliated entity.

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Number of units that have been purchased from the affiliated entity during the period.

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Contractual interest rate for funds borrowed, under the debt agreement.

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Price of a single share of a number of saleable stocks of a company.

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Amount of stock repurchase plan authorized.

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Number of shares that have been repurchased and retired during the period.

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Note 18 - Stock, Unit and Debt Repurchases (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	May 31, 2020	Jul. 31, 2019	May 31, 2019	Jul. 31, 2018	Dec. 31, 2017	Nov. 30, 2017
Stock Repurchase Program, Authorized Amount		$ 50,000		$ 50,000
Stock and Debt Repurchase Program, Authorized Amount								$ 100,000
Stock Repurchased and Retired During Period, Shares (in shares)	0	351,443		351,443
Weighted Average [Member]
Share Price (in dollars per share)		$ 27.18		$ 27.18
CONSOL Coal Resources L P Member
Stock Purchased During Period, Affiliated Entity Units (in shares)	0	6,884	0	6,884
Stock Purchased, Affiliated Entity, Average Cost Per Share (in dollars per share)		$ 17.35		$ 17.35
CONSOL Coal Resources L P Member
Stock and Debt Repurchase Program, Authorized Amount					$ 270,000	$ 200,000
Stock and Debt Repurchase Program, Additional Authorized Amount					$ 70,000	$ 25,000
Stock and Debt Repurchase Program, Restricted Authorized Amount							$ 50,000
CONSOL Coal Resources L P Units Member
Stock and Debt Repurchase Program, Authorized Amount							175,000
Stock and Debt Repurchase Program, Additional Authorized Amount							75,000	$ 25,000
Stock and Debt Repurchase Program, Restricted Authorized Amount							$ 50,000
Senior Secured Second Lien Notes due 2025 [Member]
Repayments of Debt			$ 25,480	$ 19,320
Senior Notes [Member] \| Senior Secured Second Lien Notes due 2025 [Member]
Debt Instrument, Interest Rate, Stated Percentage	11.00%	11.00%	11.00%	11.00%				11.00%	11.00%	11.00%
Repayments of Debt			$ 43,176	$ 19,320