Core Natural Resources (CNR) 10-Q 2 Nov 21 2021 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2021	Oct. 22, 2021
Document Information [Line Items]
Entity Central Index Key	0001710366
Entity Registrant Name	CONSOL Energy Inc
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2021
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	001-38147
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	82-1954058
Entity Address, Address Line One	1000 CONSOL Energy Drive, Suite 100
Entity Address, City or Town	Canonsburg
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	15317-6506
City Area Code	724
Local Phone Number	416-8300
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	CEIX
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		34,480,181

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Total Revenue from Contracts with Customers		$ 292,016	$ 214,292	$ 925,998	$ 610,688
Unrealized Loss on Commodity Derivative Instruments		(147,306)	0	(167,743)	0
Miscellaneous Other Income		4,281	21,001	9,504	71,107
Gain on Sale of Assets		21	7,926	10,563	15,241
Total Revenue and Other Income		149,012	243,219	778,322	697,036
Costs and Expenses:
Operating and Other Costs		189,081	153,031	549,239	481,712
Depreciation, Depletion and Amortization		55,977	54,959	168,073	156,057
Freight Expense		19,348	12,909	72,371	19,141
Selling, General and Administrative Costs		22,476	11,117	68,982	39,726
Loss (Gain) on Debt Extinguishment		132	(1,078)	(657)	(17,911)
Interest Expense, net		16,045	15,723	47,493	46,116
Total Costs and Expenses		303,059	246,661	905,501	724,841
Loss Before Income Tax		(154,047)	(3,442)	(127,179)	(27,805)
Income Tax (Benefit) Expense		(40,258)	5,918	(43,966)	143
Net Loss		(113,789)	(9,360)	(83,213)	(27,948)
Less: Net Loss Attributable to Noncontrolling Interest		0	(2,136)	0	(5,108)
Net Loss Attributable to CONSOL Energy Inc. Stockholders		$ (113,789)	$ (7,224)	$ (83,213)	$ (22,840)
Loss per Share:
Total Basic Loss per Share (in dollars per share)		$ (3.30)	$ (0.28)	$ (2.42)	$ (0.88)
Total Dilutive Loss per Share (in dollars per share)		$ (3.30)	$ (0.28)	$ (2.42)	$ (0.88)
Coal Revenue [Member]
Total Revenue from Contracts with Customers	[1]	$ 258,560	$ 184,375	$ 803,927	$ 542,140
Terminal Revenue [Member]
Total Revenue from Contracts with Customers		14,108	17,008	49,700	49,407
Freight Revenue [Member]
Total Revenue from Contracts with Customers		$ 19,348	$ 12,909	$ 72,371	$ 19,141
[1]	For the three and six months ended September 30, 2021 and 2020, the PAMC segment had revenues from the following customers, each comprising over 10% of the Company's total sales

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net Loss	$ (113,789)	$ (9,360)	$ (83,213)	$ (27,948)
Other Comprehensive Income:
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($1,164), ($1,214), ($3,755), ($3,642))	3,359	3,624	10,844	10,872
Unrealized Gain (Loss) on Cash Flow Hedges (Net of tax: ($135), ($127), ($414), $810)	390	377	1,195	(2,408)
Other Comprehensive Income	3,749	4,001	12,039	8,464
Comprehensive Loss	(110,040)	(5,359)	(71,174)	(19,484)
Less: Comprehensive Loss Attributable to Noncontrolling Interest	0	(2,121)	0	(5,063)
Comprehensive Loss Attributable to CONSOL Energy Inc. Stockholders	$ (110,040)	$ (3,238)	$ (71,174)	$ (14,421)

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Unaudited) (Parentheticals) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Actuarially Determined Long-Term Liability Adjustments, Tax	$ (1,164)	$ (1,214)	$ (3,755)	$ (3,642)
Unrealized gain (Loss) on Cash Flow Hedges, Tax	$ (135)	$ (127)	$ (414)	$ 810

Consolidated Balance Sheets (Cu

Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current Assets:
Cash and Cash Equivalents	$ 161,981	$ 50,850
Restricted Cash - Current	37,557	0
Accounts and Notes Receivable
Trade Receivables, net	88,496	118,289
Other Receivables, net	15,193	42,157
Inventories	56,015	56,200
Prepaid Expenses and Other Assets	24,999	25,445
Total Current Assets	384,241	292,941
Property, Plant and Equipment:
Property, Plant and Equipment	5,219,429	5,143,696
Less - Accumulated Depreciation, Depletion and Amortization	3,220,472	3,094,634
Total Property, Plant and Equipment—Net	1,998,957	2,049,062
Other Assets:
Deferred Income Taxes	111,372	68,821
Right of Use Asset - Operating Leases	32,564	53,436
Restricted Cash - Non-current	12,768	0
Other, net	49,845	59,106
Total Other Assets	206,549	181,363
TOTAL ASSETS	2,589,747	2,523,366
Current Liabilities:
Accounts Payable	78,392	71,229
Current Portion of Long-Term Debt	46,749	53,846
Operating Lease Liability	7,625	20,241
Other Accrued Liabilities	382,910	223,154
Total Current Liabilities	515,676	368,470
Long-Term Debt:
Long-Term Debt	597,697	566,858
Finance Lease Obligations	28,863	36,203
Total Long-Term Debt	626,560	603,061
Deferred Credits and Other Liabilities:
Postretirement Benefits Other Than Pensions	373,603	387,637
Pneumoconiosis Benefits	227,040	229,720
Asset Retirement Obligations	215,151	228,182
Workers’ Compensation	61,518	64,390
Salary Retirement	13,194	35,359
Operating Lease Liability	24,939	35,655
Other	47,486	17,373
Total Deferred Credits and Other Liabilities	962,931	998,316
TOTAL LIABILITIES	2,105,167	1,969,847
Stockholders' Equity:
Common Stock, $0.01 Par Value; 62,500,000 Shares Authorized, 34,480,181 Shares Issued and Outstanding at September 30, 2021; 34,031,374 Shares Issued and Outstanding at December 31, 2020	345	340
Capital in Excess of Par Value	644,920	642,887
Retained Earnings	163,637	246,850
Accumulated Other Comprehensive Loss	(324,322)	(336,558)
TOTAL EQUITY	484,580	553,519
TOTAL LIABILITIES AND EQUITY	$ 2,589,747	$ 2,523,366

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares	Sep. 30, 2021	Dec. 31, 2020
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock shares authorized (in shares)	62,500,000	62,500,000
Common stock shares issued (in shares)	34,480,181	34,031,374
Common stock shares outstanding (in shares)	34,480,181	34,031,374

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]	Common Stock [Member]CONSOL Coal Resources L P [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]	Additional Paid-in Capital [Member]CONSOL Coal Resources L P [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]	Retained Earnings [Member]CONSOL Coal Resources L P [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]	AOCI Attributable to Parent [Member]CONSOL Coal Resources L P [Member]	AOCI Attributable to Parent [Member]	Parent [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]	Parent [Member]CONSOL Coal Resources L P [Member]	Parent [Member]	Noncontrolling Interest [Member]Cumulative Effect, Period of Adoption, Adjustment [Member]	Noncontrolling Interest [Member]CONSOL Coal Resources L P [Member]	Noncontrolling Interest [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	CONSOL Coal Resources L P [Member]	Total
Balance at Dec. 31, 2019	$ 0		$ 259	$ 0		$ 523,762	$ (3,298)		$ 259,903	$ 0		$ (348,725)	$ (3,298)		$ 435,199	$ 0		$ 137,196	$ (3,298)		$ 572,395
Net Income (Loss)			0			0			2,367			0			2,367			108			2,475
Actuarially Determined Long-Term Liability Adjustments, Net of Tax			0			0			0			3,609			3,609			15			3,624
Interest Rate Hedge			0			0			0			(2,773)			(2,773)			0			(2,773)
Comprehensive Income (loss)			0			0			2,367			836			3,203			123			3,326
Issuance of Common Stock			1						0			0			0			0			0
Issuance of Common Stock						(1)
Amortization of Stock-Based Compensation Awards			0			4,856			0			0			4,856						5,014
Shares Withheld for Taxes			0			(555)			0			0			(555)			(217)			(772)
Comprehensive Income (loss)			0			0			2,367			836			3,203			123			3,326
Balance at Mar. 31, 2020			260			528,062			258,972			(347,889)			439,405			131,685			571,090
Amortization of Stock-Based Compensation Awards																		158
Distributions to Noncontrolling Interest			0			0			0			0			0			(5,575)			(5,575)
Balance at Dec. 31, 2019	$ 0		259	$ 0		523,762	$ (3,298)		259,903	$ 0		(348,725)	$ (3,298)		435,199	$ 0		137,196	$ (3,298)		572,395
Net Income (Loss)																					(27,948)
Interest Rate Hedge																					(2,408)
Comprehensive Income (loss)																					(19,484)
Comprehensive Income (loss)																					(19,484)
Balance at Sep. 30, 2020			260			532,360			233,765			(340,306)			426,079			126,649			552,728
Balance at Mar. 31, 2020			260			528,062			258,972			(347,889)			439,405			131,685			571,090
Net Income (Loss)									(17,983)						(17,983)			(3,080)			(21,063)
Actuarially Determined Long-Term Liability Adjustments, Net of Tax			0			0			0			3,609			3,609			15			3,624
Interest Rate Hedge		$ 0			$ 0			$ 0			$ (12)			$ (12)			$ 0			$ (12)
Comprehensive Income (loss)		0			0			(17,983)			3,597			(14,386)			(3,065)				(17,451)
Amortization of Stock-Based Compensation Awards			0			2,162			0			0			2,162						2,236
Comprehensive Income (loss)		0			0			(17,983)			3,597			(14,386)			(3,065)				(17,451)
Balance at Jun. 30, 2020			260			530,224			240,989			(344,292)			427,181			128,694			555,875
Amortization of Stock-Based Compensation Awards																		74
Net Income (Loss)			0			0			(7,224)			0			(7,224)			(2,136)			(9,360)
Actuarially Determined Long-Term Liability Adjustments, Net of Tax			0			0			0			3,609			3,609			15			3,624
Interest Rate Hedge																					377
Comprehensive Income (loss)			0			0			(7,224)			3,986			(3,238)			(2,121)			(5,359)
Amortization of Stock-Based Compensation Awards			0			2,136			0			0			2,136						2,212
CCR Merger		0			0			0			377			$ 377			$ 0			377
Comprehensive Income (loss)			0			0			(7,224)			3,986			(3,238)			(2,121)			(5,359)
Balance at Sep. 30, 2020			260			532,360			233,765			(340,306)			$ 426,079			126,649			552,728
Amortization of Stock-Based Compensation Awards																		$ 76
Balance at Dec. 31, 2020			340			642,887			246,850			(336,558)									553,519
Net Income (Loss)			0			0			26,404			0									26,404
Actuarially Determined Long-Term Liability Adjustments, Net of Tax			0			0			0			3,360									3,360
Interest Rate Hedge			0			0			0			414									414
Comprehensive Income (loss)			0			0			26,404			3,774									30,178
Issuance of Common Stock			4						0			0									0
Issuance of Common Stock						(4)
Amortization of Stock-Based Compensation Awards			0			1,509			0			0									1,509
Shares Withheld for Taxes			0			(2,072)			0			0									(2,072)
CCR Merger		$ 0			$ (266)			$ 0			$ 197									$ (69)
Comprehensive Income (loss)			0			0			26,404			3,774									30,178
Balance at Mar. 31, 2021			344			642,054			273,254			(332,587)									583,065
Balance at Dec. 31, 2020			340			642,887			246,850			(336,558)									553,519
Net Income (Loss)																					(83,213)
Interest Rate Hedge																					1,195
Comprehensive Income (loss)																					(71,174)
Comprehensive Income (loss)																					(71,174)
Balance at Sep. 30, 2021			345			644,920			163,637			(324,322)									484,580
Balance at Mar. 31, 2021			344			642,054			273,254			(332,587)									583,065
Net Income (Loss)			0			0			4,172			0									4,172
Actuarially Determined Long-Term Liability Adjustments, Net of Tax			0			0			0			4,125									4,125
Interest Rate Hedge			0			0			0			391									391
Comprehensive Income (loss)			0			0			4,172			4,516									8,688
Issuance of Common Stock			1						0			0									0
Issuance of Common Stock						(1)
Amortization of Stock-Based Compensation Awards			0			1,210			0			0									1,210
Shares Withheld for Taxes			0			(230)			0			0									(230)
Comprehensive Income (loss)			0			0			4,172			4,516									8,688
Balance at Jun. 30, 2021			345			643,033			277,426			(328,071)									592,733
Net Income (Loss)			0			0			(113,789)			0									(113,789)
Actuarially Determined Long-Term Liability Adjustments, Net of Tax			0			0			0			3,359									3,359
Interest Rate Hedge			0			0			0			390									390
Comprehensive Income (loss)			0			0			(113,789)			3,749									(110,040)
Amortization of Stock-Based Compensation Awards			0			1,888			0			0									1,888
Shares Withheld for Taxes			0			(1)			0			0									(1)
Comprehensive Income (loss)			0			0			(113,789)			3,749									(110,040)
Balance at Sep. 30, 2021			$ 345			$ 644,920			$ 163,637			$ (324,322)									$ 484,580

Consolidated Statements of St_2

Consolidated Statements of Stockholders' Equity (Unaudited) (Parentheticals) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member]
Cumulative Change in Accounting Principle, Tax						$ 1,109
CONSOL Coal Resources L P [Member]
Unrealized gain (Loss) on Cash Flow Hedges, Tax				$ 127	$ 4
Actuarially Determined Long-Term Liability Adjustments, Tax	$ 1,164	$ 1,427	$ 1,164	1,214	(1,214)	1,214
Interest Rate Hedge, Tax	135	135	144			933
Actuarially Determined Long-Term Liability Adjustments, Tax	(1,164)	$ (1,427)	$ (1,164)	(1,214)	$ 1,214	$ (1,214)
Unrealized gain (Loss) on Cash Flow Hedges, Tax	$ (135)			$ (127)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash Flows from Operating Activities:
Net Loss	$ (83,213)	$ (27,948)
Adjustments to Reconcile Net Loss to Net Cash Provided by Operating Activities:
Depreciation, Depletion and Amortization	168,073	156,057
Gain on Sale of Assets	(10,563)	(15,241)
Stock/Unit-Based Compensation	4,607	9,462
Amortization of Debt Issuance Costs	6,472	5,301
Loss (Gain) on Debt Extinguishment	(657)	(17,911)
Unrealized Loss on Commodity Derivative Instruments	167,743	0
Deferred Income Taxes	(43,966)	143
Equity in Earnings of Affiliates	507	1,147
Changes in Operating Assets:
Accounts and Notes Receivable	53,970	25,197
Inventories	185	(2,446)
Prepaid Expenses and Other Assets	446	5,880
Changes in Other Assets	4,952	(16,902)
Changes in Operating Liabilities:
Accounts Payable	6,247	(29,746)
Other Operating Liabilities	14,368	(1,645)
Changes in Other Liabilities	(36,028)	(28,960)
Net Cash Provided by Operating Activities	253,143	62,388
Cash Flows from Investing Activities:
Capital Expenditures	(103,318)	(65,955)
Proceeds from Sales of Assets	12,053	8,779
Other Investing Activity	(338)	(229)
Net Cash Used in Investing Activities	(91,603)	(57,405)
Cash Flows from Financing Activities:
Proceeds from Finance Lease Obligations	0	16,293
Payments on Finance Lease Obligations	(20,864)	(18,732)
Proceeds from Long-Term Debt	75,000	0
Distributions to Noncontrolling Interest	0	(5,575)
Shares/Units Withheld for Taxes	(2,303)	(772)
Debt-Related Financing Fees	(2,368)	(9,002)
Net Cash Used in Financing Activities	(84)	(62,992)
Net Increase (Decrease) in Cash and Cash Equivalents and Restricted Cash	161,456	(58,009)
Cash and Cash Equivalents and Restricted Cash at Beginning of Period	50,850	80,293
Cash and Cash Equivalents and Restricted Cash at End of Period	212,306	22,284
Non-Cash Investing and Financing Activities:
Finance Lease	12,298	17,335
Other Equipment Financing	0	13,123
Term Loan A Facility [Member]
Cash Flows from Financing Activities:
Payments on Debt	(25,000)	(16,250)
Term Loan B Facility [Member]
Cash Flows from Financing Activities:
Payments on Debt	(6,911)	(2,063)
Senior Secured Second Lien Notes due 2025 [Member]
Cash Flows from Financing Activities:
Payments on Debt	(17,092)	(26,365)
Other Asset Backed Financing [Member]
Cash Flows from Financing Activities:
Payments on Debt	$ (546)	$ (526)

Note 1 - Basis of Presentation

Note 1 - Basis of Presentation	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block]	NOTE 1—BASIS Basis of Presentation The accompanying Consolidated Financial Statements have been prepared in accordance with generally accepted accounting principles for interim financial information and with the instructions to Form 10 8 03 X. not three nine September 30, 2021 not may The Consolidated Balance Sheet at December 31, 2020 not 10 10 December 31, 2020 Basis of Consolidation The Consolidated Financial Statements include the accounts of CONSOL Energy Inc. and its wholly-owned and majority-owned and/or controlled subsidiaries. The portion of these entities that is not Recent Accounting Pronouncements In May 2021, 2021 04 260 470 50 718 815 40 260, December 15, 2021, not Earnings per Share Basic earnings per share are computed by dividing net loss attributable to CONSOL Energy Inc. stockholders by the weighted average number of shares outstanding during the reporting period. Dilutive earnings per share are computed similarly to basic earnings per share, except that the weighted average number of shares outstanding is increased to include additional shares from restricted stock units and performance share units, if dilutive. The number of additional shares is calculated by assuming that outstanding restricted stock units and performance share units were released, and that the proceeds from such activities were used to acquire shares of common stock at the average market price during the reporting period. The table below sets forth the share-based awards that have been excluded from the computation of diluted earnings per share because their effect would be anti-dilutive: Three Months Ended Nine Months Ended September 30, September 30, 2021 2020 2021 2020 Anti-Dilutive Restricted Stock Units 983,708 1,561,852 1,063,253 1,361,077 Anti-Dilutive Performance Share Units 78,635 29,062 89,544 32,736 1,062,343 1,590,914 1,152,797 1,393,813 The computations for basic and dilutive earnings per share are as follows: Three Months Ended Nine Months Ended Dollars in thousands, except per share data September 30, September 30, 2021 2020 2021 2020 Numerator: Net Loss $ (113,789 ) $ (9,360 ) $ (83,213 ) $ (27,948 ) Less: Net Loss Attributable to Noncontrolling Interest — (2,136 ) — (5,108 ) Net Loss Attributable to CONSOL Energy Inc. Stockholders $ (113,789 ) $ (7,224 ) $ (83,213 ) $ (22,840 ) Denominator: Weighted-average shares of common stock outstanding 34,480,181 26,034,198 34,378,808 26,017,546 Effect of dilutive shares* — — — — Weighted-average diluted shares of common stock outstanding 34,480,181 26,034,198 34,378,808 26,017,546 Loss per Share: Basic $ (3.30 ) $ (0.28 ) $ (2.42 ) $ (0.88 ) Dilutive $ (3.30 ) $ (0.28 ) $ (2.42 ) $ (0.88 ) *During periods in which the Company incurs a net loss, diluted weighted average shares outstanding are equal to basic weighted average shares outstanding because the effect of all equity awards is anti-dilutive. As of September 30, 2021 none Reclassifications During the year ended December 31, 2020, 17 2020 2021 three September 30, 2021, June 30, 2021. no

Note 2 - Major Transactions

Note 2 - Major Transactions	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Acquisitions and Dispositions Disclosure [Text Block]	NOTE 2 MAJOR TRANSACTIONS: Merger with CONSOL Coal Resources LP On October 22, 2020, December 30, 2020, not no Except for the Partnership's incentive distribution rights, which were automatically canceled immediately prior to the effective time of the CCR Merger for no Since CONSOL Energy controlled CCR prior to the CCR Merger and continues to control CCR after the CCR Merger, CONSOL Energy accounted for the change in its ownership interest in CCR as an equity transaction, which was reflected as a reduction of noncontrolling interest with corresponding increases to common stock and capital in excess of par value. No Prior to the effective date of the CCR Merger, public unitholders held a 39.3% equity interest in CCR's outstanding common units and CONSOL Energy owned the remaining 60.7% equity interest in CCR's outstanding common units. The earnings of CCR that were attributed to its common units held by the public prior to the CCR Merger are reflected in Net Loss Attributable to Noncontrolling Interest in the Consolidated Statements of Income. The Company incurred $9,822 of transaction costs directly attributable to the CCR Merger during the year ended December 31, 2020, Settlement Transaction with Murray Energy On September 16, 2020, 11 CONSOL Energy Inc. v Murray Energy Holdings Co., et al., Adversary Case 2:20 02036 September 30, 2021, December 31, 2020, 14

Note 3 - Revenue

Note 3 - Revenue	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Revenue from Contract with Customer [Text Block]	NOTE 3—REVENUE: The following table disaggregates CONSOL Energy's revenue from contracts with customers to depict how the nature, amount, timing and uncertainty of the Company's revenues and cash flows are affected by economic factors: Three Months Ended Nine Months Ended September 30, 2021 September 30, 2020 September 30, 2021 September 30, 2020 Domestic Coal Revenue $ 152,311 $ 144,171 $ 428,688 $ 361,598 Export Coal Revenue 106,249 40,204 375,239 180,542 Terminal Revenue 14,108 17,008 49,700 49,407 Freight Revenue 19,348 12,909 72,371 19,141 Total Revenue from Contracts with Customers $ 292,016 $ 214,292 $ 925,998 $ 610,688 Coal Revenue The Company has disaggregated its coal revenue between domestic and export revenues, which depicts the pricing and contract differences between the two. Domestic coal revenue tends to be derived from contracts that typically have a term of one CONSOL Energy's coal revenue is generally recognized when title passes to the customer and the price is fixed and determinable. Generally, title passes when coal is loaded at the central preparation facility, the CONSOL Marine Terminal or, on occasion, other destinations. The Company's coal contract revenue per ton is fixed and determinable based upon either fixed forward pricing or pricing derived from established indices and adjusted for nominal quality characteristics. Some coal contracts also contain positive electric power price-related adjustments, which represent market-driven price adjustments, wherein no not not The estimated transaction price from each of the Company's contracts is based on the total amount of consideration to which the Company expects to be entitled under the contract. Included in the transaction price for certain coal supply contracts is the impact of variable consideration, including quality price adjustments, handling services and per ton price fluctuations based on certain coal sales price indices. The estimated transaction price for each contract is allocated to the Company's performance obligations based on relative stand-alone selling prices determined at contract inception. The Company has determined that each ton of coal represents a separate and distinct performance obligation. Some of the Company's contracts span multiple years and have annual pricing modifications, based upon market-driven or inflationary adjustments, where no While CONSOL Energy does, from time to time, experience costs of obtaining coal customer contracts with amortization periods greater than one September 30, 2021 December 31, 2020 not three nine September 30, 2021 2020 not not not Terminal Revenue Terminal revenues are attributable to the Company's CONSOL Marine Terminal and include revenues earned from providing receipt and unloading of coal from rail cars, transporting coal from the receipt point to temporary storage or stockpile facilities located at the Terminal, stockpiling, blending, weighing, sampling, redelivery, and loading of coal onto vessels. Revenues for these services are earned on a ratable basis, and performance obligations are considered fulfilled as the services are performed. The CONSOL Marine Terminal does not one September 30, 2021 December 31, 2020 not three nine September 30, 2021 2020 not not not Freight Revenue Some of CONSOL Energy's coal contracts require that the Company sell its coal at locations other than its central preparation plant. The cost to transport the Company's coal to the ultimate sales point is passed through to the Company's customers and CONSOL Energy recognizes the freight revenue equal to the transportation costs when title of the coal passes to the customer. Contract Balances Contract assets are recorded separately from trade receivables in the Company's Consolidated Balance Sheets and are reclassified to trade receivables as title passes to the customer and the Company's right to consideration becomes unconditional. Payments for coal shipments are typically due within two four not

Note 4 - Miscellaneous Other In

Note 4 - Miscellaneous Other Income	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Interest and Other Income [Text Block]	NOTE 4—MISCELLANEOUS Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Royalty Income - Non-Operated Coal $ 2,821 $ 2,241 $ 5,095 $ 9,638 Interest Income 737 76 2,406 442 Rental Income 256 255 716 1,077 Contract Buyout — — — 40,969 Sale of Certain Coal Lease Contracts — 17,847 — 17,847 Other 467 582 1,287 1,134 Miscellaneous Other Income $ 4,281 $ 21,001 $ 9,504 $ 71,107 Contract buyout income earned during 2020 not The sale of certain coal lease contracts was in connection with one three September 30, 2020

Note 5 - Components of Pension

Note 5 - Components of Pension and Other Post-employment Benefit (OPEB) Plans Net Periodic Benefit Costs	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Retirement Benefits [Text Block]	NOTE 5—COMPONENTS The components of Net Periodic Benefit (Credit) Cost are as follows: Pension Benefits Other Post-Employment Benefits Three Months Ended Nine Months Ended Three Months Ended Nine Months Ended September 30, September 30, September 30, September 30, 2021 2020 2021 2020 2021 2020 2021 2020 Service Cost $ 278 $ 296 $ 836 $ 887 $ — $ — $ — $ — Interest Cost 3,563 5,044 10,667 15,132 1,819 3,199 5,456 9,597 Expected Return on Plan Assets (10,542 ) (10,455 ) (31,626 ) (31,365 ) — — — — Amortization of Prior Service Credits — — — — (602 ) (601 ) (1,804 ) (1,804 ) Amortization of Actuarial Loss 1,368 1,730 4,102 5,191 1,629 2,319 4,887 6,958 Settlement Loss Recognized — — 22 — — — — — Net Periodic Benefit (Credit) Cost $ (5,333 ) $ (3,385 ) $ (15,999 ) $ (10,155 ) $ 2,846 $ 4,917 $ 8,539 $ 14,751 (Credits) expenses related to pension and other post-employment benefits are reflected in Operating and Other Costs in the Consolidated Statements of Income. For the nine September 30, 2021 nine September 30, 2021 June 30, 2021,

Note 6 - Components of Coal Wor

Note 6 - Components of Coal Workers' Pneumoconiosis (CWP) and Workers' Compensation Net Periodic Benefit Costs	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Pneumoconiosis Benefits And Workers Compensation Disclosure [Text Block]	NOTE 6—COMPONENTS The components of Net Periodic Benefit Cost are as follows: CWP Workers' Compensation Three Months Ended Nine Months Ended Three Months Ended Nine Months Ended September 30, September 30, September 30, September 30, 2021 2020 2021 2020 2021 2020 2021 2020 Service Cost $ 1,115 $ 1,150 $ 3,345 $ 3,452 $ 1,059 $ 1,569 $ 3,177 $ 4,707 Interest Cost 1,178 1,552 3,533 4,655 282 461 846 1,383 Amortization of Actuarial Loss (Gain) 2,091 1,401 6,273 4,203 (45 ) (122 ) (135 ) (366 ) State Administrative Fees and Insurance Bond Premiums — — — — 445 583 1,357 1,665 Net Periodic Benefit Cost $ 4,384 $ 4,103 $ 13,151 $ 12,310 $ 1,741 $ 2,491 $ 5,245 $ 7,389 Expenses related to CWP and workers’ compensation are reflected in Operating and Other Costs in the Consolidated Statements of Income.

Note 7 - Income Taxes

Note 7 - Income Taxes	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Income Tax Disclosure [Text Block]	NOTE 7—INCOME The Company recorded its provision for income taxes for the three nine September 30, 2021 three nine September 30, 2021 21%, The provision for income taxes for the three nine September 30, 2020 three nine September 30, 2020 The Company utilizes the “more likely than not” nine September 30, 2021 December 31, 2020 not The Company is subject to taxation in the United States and certain of its various states, as well as Canada and certain of its various provinces. Under the provisions of the tax matters agreement entered into between the Company and its former parent on November 28, 2017 ( January 1, 2017 November 28, 2017. November 28, 2017 December 31, 2020

Note 8 - Credit Losses

Note 8 - Credit Losses	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Credit Loss, Financial Instrument [Text Block]	NOTE 8—CREDIT Effective January 1, 2020, 2016 013, Financial Instruments - Credit Losses (Topic 326 not not The following table illustrates the impact of ASC 326. January 1, 2020 As Reported Under ASC 326 Pre-ASC 326 Adoption Impact of ASC 326 Adoption Trade Receivables $ 3,051 $ 2,100 $ 951 Other Receivables 3,372 711 2,661 Other Assets 795 — 795 Allowance for Credit Losses on Receivables $ 7,218 $ 2,811 $ 4,407 The Company is exposed to credit losses primarily through sales of products and services. The Company's expected loss allowance methodology for accounts receivable is developed using historical collection experience, current and future economic and market conditions and a review of the current status of customers' trade and other accounts receivables. Due to the short-term nature of such receivables, the estimate of the amount of accounts receivable that may not Balances are written off when determined to be uncollectible. The Company considered the current and expected future economic and market conditions surrounding the novel coronavirus (COVID- 19 not Management estimates the allowance balance using relevant available information, from internal and external sources, relating to past events, current conditions, and reasonable and supportable forecasts. Historical credit loss experience provides the basis for the estimation of expected credit losses. Adjustments to historical loss information are made for changes to the assessment of anticipated payment, changes in economic conditions, current industry trends in the markets the Company serves, and changes in the financial health of the Company's counterparties. The following table provides a roll-forward of the allowance for credit losses by portfolio segment that is deducted from the amortized cost basis of accounts receivable to present the net amount expected to be collected. Trade Receivables Other Receivables Other Assets Beginning Balance, December 31, 2020 $ 4,426 $ 4,710 $ 1,661 Provision for expected credit losses (66 ) 3,972 1,029 Ending Balance, September 30, 2021 $ 4,360 $ 8,682 $ 2,690

Note 9 - Inventories

Note 9 - Inventories	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Inventory Disclosure [Text Block]	NOTE 9—INVENTORIES: Inventory components consist of the following: September 30, December 31, 2021 2020 Coal $ 8,521 $ 7,163 Supplies 47,494 49,037 Total Inventories $ 56,015 $ 56,200 Inventories are stated at the lower of cost or net realizable value. The cost of coal inventories is determined by the first first

Note 10 - Accounts Receivable S

Note 10 - Accounts Receivable Securitization	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Accounts Receivable Securitization [Text Block]	NOTE 10—ACCOUNTS CONSOL Energy and certain of its U.S. subsidiaries are parties to a trade accounts receivable securitization facility with financial institutions for the sale on a continuous basis of eligible trade accounts receivable. In March 2020, August 30, 2021 March 27, 2023. Pursuant to the securitization facility, CONSOL Thermal Holdings LLC, an indirect, wholly-owned subsidiary of the Partnership, sells current and future trade receivables to CONSOL Pennsylvania Coal Company LLC, a wholly-owned subsidiary of the Company. CONSOL Marine Terminals LLC, a wholly-owned subsidiary of the Company, and CONSOL Pennsylvania Coal Company LLC sell and/or contribute current and future trade receivables (including receivables sold to CONSOL Pennsylvania Coal Company LLC by CONSOL Thermal Holdings LLC) to CONSOL Funding LLC, a wholly-owned subsidiary of the Company (the “SPV”). The SPV, in turn, pledges its interests in the receivables to PNC Bank, N.A., which either makes loans or issues letters of credit on behalf of the SPV. The maximum amount of advances and letters of credit outstanding under the securitization facility may not Loans under the securitization facility accrue interest at a reserve-adjusted LIBOR market index rate equal to the one At September 30, 2021 September 30, 2021 December 31, 2020 December 31, 2020 three nine September 30, 2021 three nine September 30, 2020 not

Note 11 - Property, Plant and E

Note 11 - Property, Plant and Equipment	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Property, Plant and Equipment Disclosure [Text Block]	NOTE 11—PROPERTY, Property, plant and equipment consists of the following: September 30, December 31, 2021 2020 Plant and Equipment $ 3,189,279 $ 3,134,149 Coal Properties and Surface Lands 876,762 874,567 Airshafts 470,075 452,976 Mine Development 356,432 354,691 Advance Mining Royalties 326,881 327,313 Total Property, Plant and Equipment 5,219,429 5,143,696 Less: Accumulated Depreciation, Depletion and Amortization 3,220,472 3,094,634 Total Property, Plant and Equipment, Net $ 1,998,957 $ 2,049,062 Coal reserves are either owned in fee or controlled by lease. The duration of the leases vary; however, the lease terms are generally extended automatically to the exhaustion of economically recoverable reserves, as long as active mining continues. Coal interests held by lease provide the same rights as fee ownership for mineral extraction and are legally considered real property interests. As of September 30, 2021 December 31, 2020 September 30, 2021 December 31, 2020 three September 30, 2021 2020 nine September 30, 2021 2020

Note 12 - Other Accrued Liabili

Note 12 - Other Accrued Liabilities	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Accounts Payable and Accrued Liabilities Disclosure [Text Block]	NOTE 12—OTHER September 30, December 31, 2021 2020 Commodity Derivatives $ 144,094 $ — Subsidence Liability 94,852 89,554 Accrued Compensation and Benefits 42,419 27,209 Accrued Interest 9,916 6,236 Accrued Other Taxes 4,527 7,126 Accrued Equipment Obligations — 6,698 Other 15,057 17,815 Current Portion of Long-Term Liabilities: Postretirement Benefits Other than Pensions 25,456 26,073 Asset Retirement Obligations 25,370 20,587 Pneumoconiosis Benefits 11,993 12,203 Workers' Compensation 9,226 9,653 Total Other Accrued Liabilities $ 382,910 $ 223,154

Note 13 - Long-term Debt

Note 13 - Long-term Debt	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Long-term Debt [Text Block]	NOTE 13—LONG September 30, December 31, 2021 2020 Debt: Term Loan B due in September 2024 (Principal of $ 263,277 270,188 750 938 4.59 4.65 $ 262,527 $ 269,250 11.00 149,107 167,147 MEDCO Revenue Bonds in Series due September 2025 at 5.75 102,865 102,865 9.00 75,000 — Term Loan A due in March 2023 ( 5.25 5.50 41,250 66,250 Other Asset-Backed Financing Arrangements 2,267 2,813 Advance Royalty Commitments ( 13.68 2,185 2,185 Less: Unamortized Debt Issuance Costs 9,853 9,921 625,348 600,589 Less: Amounts Due in One Year* 27,651 33,731 Long-Term Debt $ 597,697 $ 566,858 * Excludes current portion of Finance Lease Obligations of $19,098 and $20,115 at September 30, 2021 December 31, 2020 In November 2017, March 28, 2019, March 29, 2021, April 13, 2021, June 5, 2020, eight March 28, 2023. September 28, 2024. first 1.5 The Senior Secured Credit Facilities contain a number of customary affirmative covenants. In addition, the Senior Secured Credit Facilities contain a number of negative covenants, including (subject to certain exceptions) limitations on (among other things): indebtedness, liens, investments, acquisitions, dispositions, restricted payments, and prepayments of junior indebtedness. The amendment added additional conditions to be met for the covenants relating to investments in joint ventures, general investments, share repurchases, dividends, and repurchases of Second Lien Notes. The additional conditions require that the Company have no outstanding borrowings and no not 1.00. The Revolving Credit Facility and the TLA Facility also include covenants relating to (i) a maximum first first first June 30, 2020 March 31, 2021, first 1.00, 1.00, 1.00; June 30, 2021 September 30, 2021, first 1.00 1.00; June 30, 2021 March 31, 2022, 1.00; December 31, 2021 March 31, 2022, first 1.00 1.00; June 30, 2022, first 1.00, 1.00 1.00. first 1.00 September 30, 2021 1.00 September 30, 2021 1.00 September 30, 2021 September 30, 2021 The TLB Facility also includes a financial covenant that requires the Company to repay a certain amount of its borrowings under the TLB Facility within ten 10 10 nine September 30, 2021 December 31, 2020 December 31, 2021. At September 30, 2021 December 31, 2020 In November 2017, 2025 November 13, 2017, November 28, 2017, second first no The only non-guarantor subsidiary of the Senior Secured Credit Facilities is the SPV, which holds the assets pledged to the Accounts Receivable Securitization Facility. The SPV had total assets of $89,300 and $123,468, comprised mainly of $88,496 and $122,639 trade receivables, net, as of September 30, 2021 December 31, 2020 three September 30, 2021 2020 nine September 30, 2021 2020 10 nine September 30, 2021 2020 no 10 During the nine September 30, 2021 2025 nine September 30, 2020 2025. three September 30, 2021, nine September 30, 2021, three nine September 30, 2020 In April 2021, seven April 1, 2051, April 13, 2028, April 1, 2021, April 1, 2021 April 1, 2021 second The Company started a capital construction project on the PAMC coarse refuse disposal area in 2017, two three nine September 30, 2021 2020. September 30, 2021 The Company is a borrower under an asset-backed financing arrangement related to certain equipment. The equipment, which had an approximate value of $2,267 and $2,813 at September 30, 2021 December 31, 2020 September 30, 2021 September 2024. September 30, 2021 December 31, 2020 During the year ended December 31, 2019, twelve December 31, 2020 2021, twelve December 31, 2022. September 30, 2021 December 31, 2020 three nine September 30, 2021 three nine September 30, 2020 three nine September 30, 2021 2020. three nine September 30, 2021 three nine September 30, 2020, 2021, September 30, 2021 12

Note 14 - Commitments and Conti

Note 14 - Commitments and Contingent Liabilities	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Commitments and Contingencies Disclosure [Text Block]	NOTE 14—COMMITMENTS The Company is subject to various lawsuits and claims with respect to such matters as personal injury, wrongful death, damage to property, exposure to hazardous substances, governmental regulations including environmental remediation, employment and contract disputes and other claims and actions arising out of the normal course of business. The Company accrues the estimated loss for these lawsuits and claims when the loss is probable and reasonably estimable. The Company’s estimated accruals related to these pending claims, individually and in the aggregate, are immaterial to the financial position, results of operations or cash flows of the Company as of September 30, 2021 September 30, 2021 not Fitzwater Litigation: April 24, 2017, October 15, 2019, July 15, 2020, August 14, 2020. October 1, 2020, February 2021. No Casey Litigation: August 23, 2017 two not December 1, 2017, March 1, 2018 October 15, 2019, July 15, 2020, August 14, 2020. October 1, 2020, February 2021. No United Mine Workers of America 1992 2013, 1992 ten 1994. 11 October 2019. 1992 “1992 9711 1992 April 30, 2020. May 2, 2020, 1992 September 16, 2020, 2 1992 Other Matters: July 27, 2021, 1974 2013 1974 2019 no 1974 no Various Company subsidiaries are defendants in certain other legal proceedings arising out of the conduct of the Coal Business prior to the separation and distribution, and the Company is also a defendant in other legal proceedings following the separation and distribution. In the opinion of management, based upon an investigation of these matters and discussion with legal counsel, the ultimate outcome of such other legal proceedings, individually and in the aggregate, is not As part of the separation and distribution, the Company assumed various financial obligations relating to the Coal Business and agreed to reimburse its former parent for certain financial guarantees relating to the Coal Business that its former parent retained following the separation and distribution. Employee-related financial guarantees have primarily been provided to support the 1992 The following is a summary, as of September 30, 2021 third not not Amount of Commitment Expiration per Period Total Amounts Committed Less Than 1 Year 1-3 Years 3-5 Years Beyond 5 Years Letters of Credit: Employee-Related $ 58,768 $ 37,074 $ 21,694 $ — $ — Environmental 398 398 — — — Other 124,824 105,096 19,728 — — Total Letters of Credit $ 183,990 $ 142,568 $ 41,422 $ — $ — Surety Bonds: Employee-Related $ 83,524 $ 48,024 $ 35,500 $ — $ — Environmental 537,822 516,537 21,285 — — Other 4,346 4,141 205 — — Total Surety Bonds $ 625,692 $ 568,702 $ 56,990 $ — $ — Guarantees: Other $ 6,889 $ 6,889 $ — $ — $ — Included in the above table are commitments and guarantees entered into in conjunction with the sale of Consolidation Coal Company and certain of its subsidiaries, which contain all five third third third September 30, 2021 not September 30, 2021 December 31, 2020 The Company regularly evaluates the likelihood of default for all guarantees based on an expected loss analysis and records the fair value, if any, of its guarantees as an obligation in the Consolidated Financial Statements.

Note 15 - Derivatives

Note 15 - Derivatives	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Derivative Instruments and Hedging Activities Disclosure [Text Block]	NOTE 15—DERIVATIVES Interest Rate Risk Management During the year ended December 31, 2019, 13 Coal Price Risk Management Positions The Company may September 30, 2021 2022. Tabular Derivatives Disclosures The Company has master netting agreements with all of its counterparties which allow for the settlement of contracts in an asset position with contracts in a liability position in the event of default or termination. Such netting arrangements reduce the Company's credit exposure related to these counterparties to the extent the Company has any liability to such counterparties. For classification purposes, the Company records the net fair value of all the positions with a given counterparty as a net asset or liability in the Consolidated Balance Sheets. The fair value of derivatives reflected in the accompanying Consolidated Balance Sheets are set forth in the table below. September 30, 2021 December 31, 2020 Asset Derivatives Liability Derivatives Asset Derivatives Liability Derivatives Coal Contracts Related to Forecasted Sales $ — $ (167,743 ) $ — $ — Effect of Counterparty Netting — — — — Net Derivatives as Classified in the Consolidated Balance Sheets $ — $ (167,743 ) $ — $ — The net amount of liability derivatives is included in Other Accrued Liabilities and Other Liabilities in the accompanying Consolidated Balance Sheets. Currently, the Company does not three nine September 30, 2021 The Company classifies the cash effects of its derivatives within the Cash Flows from Operating Activities section of the Consolidated Statements of Cash Flows.

Note 16 - Fair Value of Financi

Note 16 - Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Fair Value Disclosures [Text Block]	NOTE 16—FAIR CONSOL Energy determines the fair value of assets and liabilities based on the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants. The fair values are based on assumptions that market participants would use when pricing an asset or liability, including assumptions about risk and the risks inherent in valuation techniques and the inputs to valuations. The fair value hierarchy is based on whether the inputs to valuation techniques are observable or unobservable. Observable inputs reflect market data obtained from independent sources (including LIBOR-based discount rates), while unobservable inputs reflect the Company’s own assumptions of what market participants would use. The fair value hierarchy includes three may Level One - Quoted prices for identical instruments in active markets. Level Two - The fair value of the assets and liabilities included in Level 2 2 Level Three - Unobservable inputs significant to the fair value measurement supported by little or no In those cases when the inputs used to measure fair value meet the definition of more than one The financial instruments measured at fair value on a recurring basis are summarized below: Fair Value Measurements at Fair Value Measurements at September 30, 2021 December 31, 2020 Description Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Interest Rate Swaps $ — $ (1,224 ) $ — $ — $ (2,834 ) $ — Commodity Derivatives $ — $ (167,743 ) $ — $ — $ — $ — The following methods and assumptions were used to estimate the fair value for which the fair value option was not Long-term debt: The carrying amounts and fair values of financial instruments for which the fair value option was not September 30, 2021 December 31, 2020 Carrying Fair Carrying Fair Amount Value Amount Value Long-Term Debt $ 635,201 $ 647,978 $ 610,510 $ 517,862 Certain of the Company’s debt is actively traded on a public market and, as a result, constitutes Level 1 not 2

Note 17 - Segment Information

Note 17 - Segment Information	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	NOTE 17—SEGMENT The Company reports segment information based on the “management” approach. The management approach designates the internal reporting used by management to make decisions on and assess performance of the Company’s reportable segments. CONSOL Energy consists of two not none not The Company evaluates the performance of its segments utilizing Adjusted EBITDA and various sales and production metrics. Adjusted EBITDA is not may not may not The CONSOL Marine Terminal has been disclosed in CONSOL Energy’s Other segment during prior years due to its relatively small contribution to the Company’s Adjusted EBITDA during those periods. The recent COVID- 19 2020 December 31, 2020, 10 Reportable segment results for the three September 30, 2021 PAMC CONSOL Marine Terminal Other Adjustments and Eliminations Consolidated Coal Revenue $ 256,326 $ — $ 2,234 $ — $ 258,560 Terminal Revenue — 14,108 — — 14,108 Freight Revenue 19,348 — — — 19,348 Total Revenue from Contracts with Customers $ 275,674 $ 14,108 $ 2,234 $ — $ 292,016 Adjusted EBITDA $ 69,492 $ 7,319 $ (10,247 ) $ — $ 66,564 Segment Assets $ 1,763,319 $ 105,134 $ 721,294 $ — $ 2,589,747 Depreciation, Depletion and Amortization $ 50,837 $ 1,202 $ 3,938 $ — $ 55,977 Capital Expenditures $ 30,665 $ 453 $ 14,745 $ — $ 45,863 Reportable segment results for the three September 30, 2020 PAMC CONSOL Marine Terminal Other Adjustments and Eliminations Consolidated Coal Revenue $ 184,066 $ — $ 309 $ — $ 184,375 Terminal Revenue — 17,008 — — 17,008 Freight Revenue 12,909 — — — 12,909 Total Revenue from Contracts with Customers $ 196,975 $ 17,008 $ 309 $ — $ 214,292 Adjusted EBITDA $ 45,272 $ 11,342 $ 11,684 $ — $ 68,298 Segment Assets $ 1,878,350 $ 105,405 $ 571,083 $ — $ 2,554,838 Depreciation, Depletion and Amortization $ 49,944 $ 1,283 $ 3,732 $ — $ 54,959 Capital Expenditures $ 15,733 $ 740 $ 3,035 $ — $ 19,508 Reportable segment results for the nine September 30, 2021 PAMC CONSOL Marine Terminal Other Adjustments and Eliminations Consolidated Coal Revenue $ 799,274 $ — $ 4,653 $ — $ 803,927 Terminal Revenue — 49,700 — — 49,700 Freight Revenue 72,371 — — — 72,371 Total Revenue from Contracts with Customers $ 871,645 $ 49,700 $ 4,653 $ — $ 925,998 Adjusted EBITDA $ 246,943 $ 30,244 $ (19,491 ) $ — $ 257,696 Segment Assets $ 1,763,319 $ 105,134 $ 721,294 $ — $ 2,589,747 Depreciation, Depletion and Amortization $ 155,787 $ 3,616 $ 8,670 $ — $ 168,073 Capital Expenditures $ 83,118 $ 565 $ 19,635 $ — $ 103,318 Reportable segment results for the nine September 30, 2020 PAMC CONSOL Marine Terminal Other Adjustments and Eliminations Consolidated Coal Revenue $ 541,545 $ — $ 595 $ — $ 542,140 Terminal Revenue — 49,407 — — 49,407 Freight Revenue 19,141 — — — 19,141 Total Revenue from Contracts with Customers $ 560,686 $ 49,407 $ 595 $ — $ 610,688 Adjusted EBITDA $ 135,732 $ 32,556 $ (2,811 ) $ — $ 165,477 Segment Assets $ 1,878,350 $ 105,405 $ 571,083 $ — $ 2,554,838 Depreciation, Depletion and Amortization $ 145,154 $ 3,800 $ 7,103 $ — $ 156,057 Capital Expenditures $ 52,687 $ 1,360 $ 11,908 $ — $ 65,955 For the three nine September 30, 2021 2020 10% Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Customer A $ 43,947 $ 45,818 $ 133,863 $ 94,647 Customer B $ 31,520 * $ 114,865 $ 183,560 Customer C $ 39,216 $ 36,888 $ 110,253 $ 86,631 Customer D * * $ 140,314 * *Revenues from these customers during the periods presented were less than 10% Reconciliation of Segment Information to Consolidated Amounts: Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Loss Before Income Tax $ (154,047 ) $ (3,442 ) $ (127,179 ) $ (27,805 ) Interest Expense, net 16,045 15,723 47,493 46,116 Loss (Gain) on Debt Extinguishment 132 (1,078 ) (657 ) (17,911 ) Interest Income (737 ) (76 ) (2,406 ) (442 ) Depreciation, Depletion and Amortization 55,977 54,959 168,073 156,057 Unrealized Loss on Commodity Derivative Instruments 147,306 — 167,743 — Pension Settlement — — 22 — Stock/Unit-Based Compensation 1,888 2,212 4,607 9,462 Adjusted EBITDA $ 66,564 $ 68,298 $ 257,696 $ 165,477

Note 18 - Related Party Transac

Note 18 - Related Party Transactions	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Related Party Transactions Disclosure [Text Block]	NOTE 18—RELATED CONSOL Coal Resources LP On December 30, 2020, 2 third Prior to the CCR Merger, CONSOL Energy, certain of its subsidiaries and the Partnership were party to various agreements, including an Omnibus Agreement dated September 30, 2016, November 28, 2017, Charges for services from the Company to CCR prior to the CCR Merger include the following: Three Months Ended September 30, Nine Months Ended September 30, 2020 2020 Operating and Other Costs $ 1,006 $ 2,715 Selling, General and Administrative Costs 1,770 6,427 Total Services from CONSOL Energy $ 2,776 $ 9,142 Operating and Other Costs included pension service costs and insurance expenses. Selling, General and Administrative Costs included charges for incentive compensation, an annual administrative support fee and reimbursement for the provision of certain management and operating services provided by the Company.

Note 19 - Stock and Debt Repurc

Note 19 - Stock and Debt Repurchases	9 Months Ended
	Sep. 30, 2021
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	NOTE 19—STOCK In December 2017, 2025. April 2021 December 31, 2022. Under the terms of the program, CONSOL Energy is permitted to make repurchases in the open market, in privately negotiated transactions, accelerated repurchase programs or in structured share repurchase programs. CONSOL Energy is also authorized to enter into one 10b5 1 not During the nine September 30, 2021 2020 and spent $26,365 to retire $45,176 2025, nine September 30, 2021 2020

Significant Accounting Policies

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	Basis of Presentation The accompanying Consolidated Financial Statements have been prepared in accordance with generally accepted accounting principles for interim financial information and with the instructions to Form 10 8 03 X. not three nine September 30, 2021 not may The Consolidated Balance Sheet at December 31, 2020 not 10 10 December 31, 2020
Consolidation, Policy [Policy Text Block]	Basis of Consolidation The Consolidated Financial Statements include the accounts of CONSOL Energy Inc. and its wholly-owned and majority-owned and/or controlled subsidiaries. The portion of these entities that is not
New Accounting Pronouncements, Policy [Policy Text Block]	Recent Accounting Pronouncements In May 2021, 2021 04 260 470 50 718 815 40 260, December 15, 2021, not
Earnings Per Share, Policy [Policy Text Block]	Earnings per Share Basic earnings per share are computed by dividing net loss attributable to CONSOL Energy Inc. stockholders by the weighted average number of shares outstanding during the reporting period. Dilutive earnings per share are computed similarly to basic earnings per share, except that the weighted average number of shares outstanding is increased to include additional shares from restricted stock units and performance share units, if dilutive. The number of additional shares is calculated by assuming that outstanding restricted stock units and performance share units were released, and that the proceeds from such activities were used to acquire shares of common stock at the average market price during the reporting period. The table below sets forth the share-based awards that have been excluded from the computation of diluted earnings per share because their effect would be anti-dilutive: Three Months Ended Nine Months Ended September 30, September 30, 2021 2020 2021 2020 Anti-Dilutive Restricted Stock Units 983,708 1,561,852 1,063,253 1,361,077 Anti-Dilutive Performance Share Units 78,635 29,062 89,544 32,736 1,062,343 1,590,914 1,152,797 1,393,813 The computations for basic and dilutive earnings per share are as follows: Three Months Ended Nine Months Ended Dollars in thousands, except per share data September 30, September 30, 2021 2020 2021 2020 Numerator: Net Loss $ (113,789 ) $ (9,360 ) $ (83,213 ) $ (27,948 ) Less: Net Loss Attributable to Noncontrolling Interest — (2,136 ) — (5,108 ) Net Loss Attributable to CONSOL Energy Inc. Stockholders $ (113,789 ) $ (7,224 ) $ (83,213 ) $ (22,840 ) Denominator: Weighted-average shares of common stock outstanding 34,480,181 26,034,198 34,378,808 26,017,546 Effect of dilutive shares* — — — — Weighted-average diluted shares of common stock outstanding 34,480,181 26,034,198 34,378,808 26,017,546 Loss per Share: Basic $ (3.30 ) $ (0.28 ) $ (2.42 ) $ (0.88 ) Dilutive $ (3.30 ) $ (0.28 ) $ (2.42 ) $ (0.88 ) *During periods in which the Company incurs a net loss, diluted weighted average shares outstanding are equal to basic weighted average shares outstanding because the effect of all equity awards is anti-dilutive. As of September 30, 2021 none
Reclassification, Comparability Adjustment [Policy Text Block]	Reclassifications During the year ended December 31, 2020, 17 2020 2021 three September 30, 2021, June 30, 2021. no

Note 1 - Basis of Presentation

Note 1 - Basis of Presentation (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]	Three Months Ended Nine Months Ended September 30, September 30, 2021 2020 2021 2020 Anti-Dilutive Restricted Stock Units 983,708 1,561,852 1,063,253 1,361,077 Anti-Dilutive Performance Share Units 78,635 29,062 89,544 32,736 1,062,343 1,590,914 1,152,797 1,393,813
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Three Months Ended Nine Months Ended Dollars in thousands, except per share data September 30, September 30, 2021 2020 2021 2020 Numerator: Net Loss $ (113,789 ) $ (9,360 ) $ (83,213 ) $ (27,948 ) Less: Net Loss Attributable to Noncontrolling Interest — (2,136 ) — (5,108 ) Net Loss Attributable to CONSOL Energy Inc. Stockholders $ (113,789 ) $ (7,224 ) $ (83,213 ) $ (22,840 ) Denominator: Weighted-average shares of common stock outstanding 34,480,181 26,034,198 34,378,808 26,017,546 Effect of dilutive shares* — — — — Weighted-average diluted shares of common stock outstanding 34,480,181 26,034,198 34,378,808 26,017,546 Loss per Share: Basic $ (3.30 ) $ (0.28 ) $ (2.42 ) $ (0.88 ) Dilutive $ (3.30 ) $ (0.28 ) $ (2.42 ) $ (0.88 )

Note 3 - Revenue (Tables)

Note 3 - Revenue (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Disaggregation of Revenue [Table Text Block]	Three Months Ended Nine Months Ended September 30, 2021 September 30, 2020 September 30, 2021 September 30, 2020 Domestic Coal Revenue $ 152,311 $ 144,171 $ 428,688 $ 361,598 Export Coal Revenue 106,249 40,204 375,239 180,542 Terminal Revenue 14,108 17,008 49,700 49,407 Freight Revenue 19,348 12,909 72,371 19,141 Total Revenue from Contracts with Customers $ 292,016 $ 214,292 $ 925,998 $ 610,688

Note 4 - Miscellaneous Other _2

Note 4 - Miscellaneous Other Income (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Other Income (Loss) [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Royalty Income - Non-Operated Coal $ 2,821 $ 2,241 $ 5,095 $ 9,638 Interest Income 737 76 2,406 442 Rental Income 256 255 716 1,077 Contract Buyout — — — 40,969 Sale of Certain Coal Lease Contracts — 17,847 — 17,847 Other 467 582 1,287 1,134 Miscellaneous Other Income $ 4,281 $ 21,001 $ 9,504 $ 71,107

Note 5 - Components of Pensio_2

Note 5 - Components of Pension and Other Post-employment Benefit (OPEB) Plans Net Periodic Benefit Costs (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Defined Benefit Plans Disclosures [Table Text Block]	Pension Benefits Other Post-Employment Benefits Three Months Ended Nine Months Ended Three Months Ended Nine Months Ended September 30, September 30, September 30, September 30, 2021 2020 2021 2020 2021 2020 2021 2020 Service Cost $ 278 $ 296 $ 836 $ 887 $ — $ — $ — $ — Interest Cost 3,563 5,044 10,667 15,132 1,819 3,199 5,456 9,597 Expected Return on Plan Assets (10,542 ) (10,455 ) (31,626 ) (31,365 ) — — — — Amortization of Prior Service Credits — — — — (602 ) (601 ) (1,804 ) (1,804 ) Amortization of Actuarial Loss 1,368 1,730 4,102 5,191 1,629 2,319 4,887 6,958 Settlement Loss Recognized — — 22 — — — — — Net Periodic Benefit (Credit) Cost $ (5,333 ) $ (3,385 ) $ (15,999 ) $ (10,155 ) $ 2,846 $ 4,917 $ 8,539 $ 14,751

Note 6 - Components of Coal W_2

Note 6 - Components of Coal Workers' Pneumoconiosis (CWP) and Workers' Compensation Net Periodic Benefit Costs (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Changes in Accumulated Postemployment Benefit Obligations [Table Text Block]	CWP Workers' Compensation Three Months Ended Nine Months Ended Three Months Ended Nine Months Ended September 30, September 30, September 30, September 30, 2021 2020 2021 2020 2021 2020 2021 2020 Service Cost $ 1,115 $ 1,150 $ 3,345 $ 3,452 $ 1,059 $ 1,569 $ 3,177 $ 4,707 Interest Cost 1,178 1,552 3,533 4,655 282 461 846 1,383 Amortization of Actuarial Loss (Gain) 2,091 1,401 6,273 4,203 (45 ) (122 ) (135 ) (366 ) State Administrative Fees and Insurance Bond Premiums — — — — 445 583 1,357 1,665 Net Periodic Benefit Cost $ 4,384 $ 4,103 $ 13,151 $ 12,310 $ 1,741 $ 2,491 $ 5,245 $ 7,389

Note 8 - Credit Losses (Tables)

Note 8 - Credit Losses (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Accounting Standards Update and Change in Accounting Principle [Table Text Block]	January 1, 2020 As Reported Under ASC 326 Pre-ASC 326 Adoption Impact of ASC 326 Adoption Trade Receivables $ 3,051 $ 2,100 $ 951 Other Receivables 3,372 711 2,661 Other Assets 795 — 795 Allowance for Credit Losses on Receivables $ 7,218 $ 2,811 $ 4,407
Accounts Receivable, Allowance for Credit Loss [Table Text Block]	Trade Receivables Other Receivables Other Assets Beginning Balance, December 31, 2020 $ 4,426 $ 4,710 $ 1,661 Provision for expected credit losses (66 ) 3,972 1,029 Ending Balance, September 30, 2021 $ 4,360 $ 8,682 $ 2,690

Note 9 - Inventories (Tables)

Note 9 - Inventories (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Inventory, Current [Table Text Block]	September 30, December 31, 2021 2020 Coal $ 8,521 $ 7,163 Supplies 47,494 49,037 Total Inventories $ 56,015 $ 56,200

Note 11 - Property, Plant and_2

Note 11 - Property, Plant and Equipment (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Property, Plant and Equipment [Table Text Block]	September 30, December 31, 2021 2020 Plant and Equipment $ 3,189,279 $ 3,134,149 Coal Properties and Surface Lands 876,762 874,567 Airshafts 470,075 452,976 Mine Development 356,432 354,691 Advance Mining Royalties 326,881 327,313 Total Property, Plant and Equipment 5,219,429 5,143,696 Less: Accumulated Depreciation, Depletion and Amortization 3,220,472 3,094,634 Total Property, Plant and Equipment, Net $ 1,998,957 $ 2,049,062

Note 12 - Other Accrued Liabi_2

Note 12 - Other Accrued Liabilities (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Accrued Liabilities [Table Text Block]	September 30, December 31, 2021 2020 Commodity Derivatives $ 144,094 $ — Subsidence Liability 94,852 89,554 Accrued Compensation and Benefits 42,419 27,209 Accrued Interest 9,916 6,236 Accrued Other Taxes 4,527 7,126 Accrued Equipment Obligations — 6,698 Other 15,057 17,815 Current Portion of Long-Term Liabilities: Postretirement Benefits Other than Pensions 25,456 26,073 Asset Retirement Obligations 25,370 20,587 Pneumoconiosis Benefits 11,993 12,203 Workers' Compensation 9,226 9,653 Total Other Accrued Liabilities $ 382,910 $ 223,154

Note 13 - Long-term Debt (Table

Note 13 - Long-term Debt (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Long-term Debt Instruments [Table Text Block]	September 30, December 31, 2021 2020 Debt: Term Loan B due in September 2024 (Principal of $ 263,277 270,188 750 938 4.59 4.65 $ 262,527 $ 269,250 11.00 149,107 167,147 MEDCO Revenue Bonds in Series due September 2025 at 5.75 102,865 102,865 9.00 75,000 — Term Loan A due in March 2023 ( 5.25 5.50 41,250 66,250 Other Asset-Backed Financing Arrangements 2,267 2,813 Advance Royalty Commitments ( 13.68 2,185 2,185 Less: Unamortized Debt Issuance Costs 9,853 9,921 625,348 600,589 Less: Amounts Due in One Year* 27,651 33,731 Long-Term Debt $ 597,697 $ 566,858

Note 14 - Commitments and Con_2

Note 14 - Commitments and Contingent Liabilities (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Guarantor Obligations [Table Text Block]	Amount of Commitment Expiration per Period Total Amounts Committed Less Than 1 Year 1-3 Years 3-5 Years Beyond 5 Years Letters of Credit: Employee-Related $ 58,768 $ 37,074 $ 21,694 $ — $ — Environmental 398 398 — — — Other 124,824 105,096 19,728 — — Total Letters of Credit $ 183,990 $ 142,568 $ 41,422 $ — $ — Surety Bonds: Employee-Related $ 83,524 $ 48,024 $ 35,500 $ — $ — Environmental 537,822 516,537 21,285 — — Other 4,346 4,141 205 — — Total Surety Bonds $ 625,692 $ 568,702 $ 56,990 $ — $ — Guarantees: Other $ 6,889 $ 6,889 $ — $ — $ —

Note 15 - Derivatives (Tables)

Note 15 - Derivatives (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]	September 30, 2021 December 31, 2020 Asset Derivatives Liability Derivatives Asset Derivatives Liability Derivatives Coal Contracts Related to Forecasted Sales $ — $ (167,743 ) $ — $ — Effect of Counterparty Netting — — — — Net Derivatives as Classified in the Consolidated Balance Sheets $ — $ (167,743 ) $ — $ —

Note 16 - Fair Value of Finan_2

Note 16 - Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Fair Value, Liabilities Measured on Recurring Basis [Table Text Block]	Fair Value Measurements at Fair Value Measurements at September 30, 2021 December 31, 2020 Description Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Interest Rate Swaps $ — $ (1,224 ) $ — $ — $ (2,834 ) $ — Commodity Derivatives $ — $ (167,743 ) $ — $ — $ — $ —
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments [Table Text Block]	September 30, 2021 December 31, 2020 Carrying Fair Carrying Fair Amount Value Amount Value Long-Term Debt $ 635,201 $ 647,978 $ 610,510 $ 517,862

Note 17 - Segment Information (

Note 17 - Segment Information (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Segment Reporting Information, by Segment [Table Text Block]	PAMC CONSOL Marine Terminal Other Adjustments and Eliminations Consolidated Coal Revenue $ 256,326 $ — $ 2,234 $ — $ 258,560 Terminal Revenue — 14,108 — — 14,108 Freight Revenue 19,348 — — — 19,348 Total Revenue from Contracts with Customers $ 275,674 $ 14,108 $ 2,234 $ — $ 292,016 Adjusted EBITDA $ 69,492 $ 7,319 $ (10,247 ) $ — $ 66,564 Segment Assets $ 1,763,319 $ 105,134 $ 721,294 $ — $ 2,589,747 Depreciation, Depletion and Amortization $ 50,837 $ 1,202 $ 3,938 $ — $ 55,977 Capital Expenditures $ 30,665 $ 453 $ 14,745 $ — $ 45,863 PAMC CONSOL Marine Terminal Other Adjustments and Eliminations Consolidated Coal Revenue $ 184,066 $ — $ 309 $ — $ 184,375 Terminal Revenue — 17,008 — — 17,008 Freight Revenue 12,909 — — — 12,909 Total Revenue from Contracts with Customers $ 196,975 $ 17,008 $ 309 $ — $ 214,292 Adjusted EBITDA $ 45,272 $ 11,342 $ 11,684 $ — $ 68,298 Segment Assets $ 1,878,350 $ 105,405 $ 571,083 $ — $ 2,554,838 Depreciation, Depletion and Amortization $ 49,944 $ 1,283 $ 3,732 $ — $ 54,959 Capital Expenditures $ 15,733 $ 740 $ 3,035 $ — $ 19,508 PAMC CONSOL Marine Terminal Other Adjustments and Eliminations Consolidated Coal Revenue $ 799,274 $ — $ 4,653 $ — $ 803,927 Terminal Revenue — 49,700 — — 49,700 Freight Revenue 72,371 — — — 72,371 Total Revenue from Contracts with Customers $ 871,645 $ 49,700 $ 4,653 $ — $ 925,998 Adjusted EBITDA $ 246,943 $ 30,244 $ (19,491 ) $ — $ 257,696 Segment Assets $ 1,763,319 $ 105,134 $ 721,294 $ — $ 2,589,747 Depreciation, Depletion and Amortization $ 155,787 $ 3,616 $ 8,670 $ — $ 168,073 Capital Expenditures $ 83,118 $ 565 $ 19,635 $ — $ 103,318 PAMC CONSOL Marine Terminal Other Adjustments and Eliminations Consolidated Coal Revenue $ 541,545 $ — $ 595 $ — $ 542,140 Terminal Revenue — 49,407 — — 49,407 Freight Revenue 19,141 — — — 19,141 Total Revenue from Contracts with Customers $ 560,686 $ 49,407 $ 595 $ — $ 610,688 Adjusted EBITDA $ 135,732 $ 32,556 $ (2,811 ) $ — $ 165,477 Segment Assets $ 1,878,350 $ 105,405 $ 571,083 $ — $ 2,554,838 Depreciation, Depletion and Amortization $ 145,154 $ 3,800 $ 7,103 $ — $ 156,057 Capital Expenditures $ 52,687 $ 1,360 $ 11,908 $ — $ 65,955
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Customer A $ 43,947 $ 45,818 $ 133,863 $ 94,647 Customer B $ 31,520 * $ 114,865 $ 183,560 Customer C $ 39,216 $ 36,888 $ 110,253 $ 86,631 Customer D * * $ 140,314 *
Schedule of Adjusted EBITDA [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Loss Before Income Tax $ (154,047 ) $ (3,442 ) $ (127,179 ) $ (27,805 ) Interest Expense, net 16,045 15,723 47,493 46,116 Loss (Gain) on Debt Extinguishment 132 (1,078 ) (657 ) (17,911 ) Interest Income (737 ) (76 ) (2,406 ) (442 ) Depreciation, Depletion and Amortization 55,977 54,959 168,073 156,057 Unrealized Loss on Commodity Derivative Instruments 147,306 — 167,743 — Pension Settlement — — 22 — Stock/Unit-Based Compensation 1,888 2,212 4,607 9,462 Adjusted EBITDA $ 66,564 $ 68,298 $ 257,696 $ 165,477

Note 18 - Related Party Trans_2

Note 18 - Related Party Transactions (Tables)	9 Months Ended
	Sep. 30, 2021
Notes Tables
Schedule of Related Party Transactions [Table Text Block]	Three Months Ended September 30, Nine Months Ended September 30, 2020 2020 Operating and Other Costs $ 1,006 $ 2,715 Selling, General and Administrative Costs 1,770 6,427 Total Services from CONSOL Energy $ 2,776 $ 9,142

Note 1 - Basis of Presentatio_2

Note 1 - Basis of Presentation (Details Textual)	Sep. 30, 2021shares
Preferred Stock, Shares Authorized (in shares)	500,000
Preferred Stock, Shares Issued, Total (in shares)	0

Note 1 - Basis of Presentatio_3

Note 1 - Basis of Presentation - Schedule of Antidilutive Securities (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Antidilutive securities excluded from calculation of earnings per share (in shares)	1,062,343	1,590,914	1,152,797	1,393,813
Restricted Stock Units (RSUs) [Member]
Antidilutive securities excluded from calculation of earnings per share (in shares)	983,708	1,561,852	1,063,253	1,361,077
Performance Shares [Member]
Antidilutive securities excluded from calculation of earnings per share (in shares)	78,635	29,062	89,544	32,736

Note 1 - Basis of Presentatio_4

Note 1 - Basis of Presentation - Schedule of Basic and Dilutive Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Net Loss	$ (113,789)	$ 4,172	$ 26,404	$ (9,360)	$ (21,063)	$ 2,475	$ (83,213)	$ (27,948)
Less: Net Loss Attributable to Noncontrolling Interest	0			(2,136)			0	(5,108)
Net Loss Attributable to CONSOL Energy Inc. Stockholders	$ (113,789)			$ (7,224)			$ (83,213)	$ (22,840)
Weighted-average shares of common stock outstanding (in shares)	34,480,181			26,034,198			34,378,808	26,017,546
Effect of dilutive shares* (in shares)	0			0			0	0
Weighted-average diluted shares of common stock outstanding (in shares)	34,480,181			26,034,198			34,378,808	26,017,546
Total Basic Loss per Share (in dollars per share)	$ (3.30)			$ (0.28)			$ (2.42)	$ (0.88)
Total Dilutive Loss per Share (in dollars per share)	$ (3.30)			$ (0.28)			$ (2.42)	$ (0.88)

Note 2 - Major Transactions (De

Note 2 - Major Transactions (Details Textual) $ in Thousands	Dec. 30, 2020shares	Oct. 22, 2020USD ($)shares	Dec. 31, 2020USD ($)	Sep. 30, 2021USD ($)
Stock Issued During Period, Shares, Acquisitions (in shares) | shares	7,967,690
Settlement Transaction with Murray Energy [Member]
Other Receivables			$ 4,867	$ 4,871
Other Assets, Total			22,055	$ 19,156
Public Unitholders [Member] | CCR [Member]
Ownership, Oustanding Common Units, Percent		39.30%
CONSOL Coal Resources L P [Member] | CCR [Member]
Ownership, Oustanding Common Units, Percent		60.70%
CONSOL Coal Resources L P [Member]
Stock Issued During Period, Shares, Acquisitions (in shares) | shares		7,967,690
Business Combination, Consideration Transferred, Equity Interest Acquired, Shares (in shares) | shares		10,912,138
Business Combination, Consideration Transferred, Equity Interests, Shares, Exchange Ratio		0.73
Business Combination, Consideration Transferred, Total		$ 51,710
CONSOL Coal Resources L P [Member] | Selling, General and Administrative Expenses [Member]
Business Combination, Acquisition Related Costs			$ 9,822

Note 3 - Revenue (Details Textu

Note 3 - Revenue (Details Textual) $ in Thousands	9 Months Ended
	Sep. 30, 2021USD ($)
Capitalized Contract Cost, Net, Total	$ 0
Capitalized Contract Cost, Amortization	0
Contract with Customer, Liability, Revenue Recognized	$ 0

Note 3 - Revenue - Revenue (Det

Note 3 - Revenue - Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Total Revenue from Contracts with Customers	$ 292,016	$ 214,292	$ 925,998	$ 610,688
Domestic Coal Revenue [Member]
Total Revenue from Contracts with Customers	152,311	144,171	428,688	361,598
Export Coal Revenue [Member]
Total Revenue from Contracts with Customers	106,249	40,204	375,239	180,542
Terminal Revenue [Member]
Total Revenue from Contracts with Customers	14,108	17,008	49,700	49,407
Freight Revenue [Member]
Total Revenue from Contracts with Customers	$ 19,348	$ 12,909	$ 72,371	$ 19,141

Note 4 - Miscellaneous Other _3

Note 4 - Miscellaneous Other Income - Miscellaneous Other Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Royalty Income - Non-Operated Coal	$ 2,821	$ 2,241	$ 5,095	$ 9,638
Interest Income	737	76	2,406	442
Rental Income	256	255	716	1,077
Contract Buyout	0	0	0	40,969
Sale of Certain Coal Lease Contracts	0	17,847	0	17,847
Other	467	582	1,287	1,134
Miscellaneous Other Income	$ 4,281	$ 21,001	$ 9,504	$ 71,107

Note 5 - Components of Pensio_3

Note 5 - Components of Pension and Other Post-employment Benefit (OPEB) Plans Net Periodic Benefit Costs (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement	$ 0	$ 0	$ (22)	$ 0
Other Comprehensive Income (Loss), Defined Benefit Plan, Settlement and Curtailment Gain (Loss), after Tax			766
Other Comprehensive Income (Loss), Defined Benefit Plan, Adjustment for Settlement or Curtailment Gain (Loss), Tax			265
Pension Plan [Member]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement	$ 0	$ 0	(22)	$ 0
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Remeasurement due to Settlement			(1,009)
Commodity Contract [Member]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement			$ 22

Note 5 - Components of Pensio_4

Note 5 - Components of Pension and Other Post-employment Benefit (OPEB) Plans Net Periodic Benefit Costs - Components of Net Periodic Benefit (Credit) Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Pension Settlement	$ 0	$ 0	$ 22	$ 0
Pension Plan [Member]
Service Cost	278	296	836	887
Interest Cost	3,563	5,044	10,667	15,132
Expected Return on Plan Assets	(10,542)	(10,455)	(31,626)	(31,365)
Amortization of Prior Service Credits	0	0	0	0
Amortization of Actuarial Loss	1,368	1,730	4,102	5,191
Pension Settlement	0	0	22	0
Net Periodic Benefit (Credit) Cost	(5,333)	(3,385)	(15,999)	(10,155)
Other Postretirement Benefits Plan [Member]
Service Cost	0	0	0	0
Interest Cost	1,819	3,199	5,456	9,597
Expected Return on Plan Assets	0	0	0	0
Amortization of Prior Service Credits	(602)	(601)	(1,804)	(1,804)
Amortization of Actuarial Loss	1,629	2,319	4,887	6,958
Pension Settlement	0	0	0	0
Net Periodic Benefit (Credit) Cost	$ 2,846	$ 4,917	$ 8,539	$ 14,751

Note 6 - Components of Coal W_3

Note 6 - Components of Coal Workers' Pneumoconiosis (CWP) and Workers' Compensation Net Periodic Benefit Costs - Components of Net Period Benefit Costs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Coal Workers Pneumoconiosis [Member]
Service Cost	$ 1,115	$ 1,150	$ 3,345	$ 3,452
Interest Cost	1,178	1,552	3,533	4,655
Amortization of Actuarial Loss	2,091	1,401	6,273	4,203
State Administrative Fees and Insurance Bond Premiums	0	0	0	0
Net Periodic Benefit (Credit) Cost	4,384	4,103	13,151	12,310
Workers Compensation [Member]
Service Cost	1,059	1,569	3,177	4,707
Interest Cost	282	461	846	1,383
Amortization of Actuarial Loss	(45)	(122)	(135)	(366)
State Administrative Fees and Insurance Bond Premiums	445	583	1,357	1,665
Net Periodic Benefit (Credit) Cost	$ 1,741	$ 2,491	$ 5,245	$ 7,389

Note 7 - Income Taxes (Details

Note 7 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Tax Expense (Benefit), Total	$ (40,258)	$ 5,918	$ (43,966)	$ 143
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		21.00%		21.00%

Note 8 - Credit Losses (Details

Note 8 - Credit Losses (Details Textual) - USD ($) $ in Thousands	Jan. 01, 2020	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance		$ 484,580	$ 592,733	$ 583,065	$ 553,519	$ 552,728	$ 555,875	$ 571,090	$ 572,395
Cumulative Effect, Period of Adoption, Adjustment [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance									(3,298)
Retained Earnings [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance		$ 163,637	$ 277,426	$ 273,254	$ 246,850	$ 233,765	$ 240,989	$ 258,972	259,903
Retained Earnings [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance	$ 3,298								$ (3,298)
Income Tax Effects Allocated Directly to Equity, Cumulative Effect of Change in Accounting Principle	$ 1,109

Note 8 - Credit Losses - Impact

Note 8 - Credit Losses - Impact of ASC 326 (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Jan. 01, 2020
Allowance for Credit Losses on Receivables	$ 2,690	$ 1,661	$ 2,811
Trade Accounts Receivable [Member]
Allowance for Credit Losses on Receivables	4,360	4,426	2,100
Other Receivables [Member]
Allowance for Credit Losses on Receivables	$ 8,682	$ 4,710	711
Other Assets [Member]
Allowance for Credit Losses on Receivables			0
Cumulative Effect, Period of Adoption, Adjusted Balance [Member]
Allowance for Credit Losses on Receivables			7,218
Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | Trade Accounts Receivable [Member]
Allowance for Credit Losses on Receivables			3,051
Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | Other Receivables [Member]
Allowance for Credit Losses on Receivables			3,372
Cumulative Effect, Period of Adoption, Adjusted Balance [Member] | Other Assets [Member]
Allowance for Credit Losses on Receivables			795
Cumulative Effect, Period of Adoption, Adjustment [Member]
Allowance for Credit Losses on Receivables			4,407
Cumulative Effect, Period of Adoption, Adjustment [Member] | Trade Accounts Receivable [Member]
Allowance for Credit Losses on Receivables			951
Cumulative Effect, Period of Adoption, Adjustment [Member] | Other Receivables [Member]
Allowance for Credit Losses on Receivables			2,661
Cumulative Effect, Period of Adoption, Adjustment [Member] | Other Assets [Member]
Allowance for Credit Losses on Receivables			$ 795

Note 8 - Credit Losses - Impa_2

Note 8 - Credit Losses - Impact of ASC 326 - Allowance for Credit Losses by Portfolio (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2021USD ($)
Beginning Balance	$ 1,661
Provision for expected credit losses	1,029
Beginning Balance	2,690
Trade Accounts Receivable [Member]
Beginning Balance	4,426
Provision for expected credit losses	(66)
Beginning Balance	4,360
Other Receivables [Member]
Beginning Balance	4,710
Provision for expected credit losses	3,972
Beginning Balance	$ 8,682

Note 9 - Inventories - Inventor

Note 9 - Inventories - Inventories (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Coal	$ 8,521	$ 7,163
Supplies	47,494	49,037
Total Inventories	$ 56,015	$ 56,200

Note 10 - Accounts Receivable_2

Note 10 - Accounts Receivable Securitization (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Payments of Financing Costs, Total			$ 2,368	$ 9,002
Line of Credit [Member] | Accounts Receivable Securitization Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 100,000		$ 100,000
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage			0.60%
Accounts Receivable Eligible for Securitization	23,862		$ 23,862		$ 31,868
Line of Credit Facility, Fair Value of Amount Outstanding	0		0		0
Letters of Credit Outstanding, Amount	24,306		24,306		31,218
Line of Credit Facility, Remaining Borrowing Capacity	0		0		$ 650
Debt Instrument, Collateral Amount	444		444
Payments of Financing Costs, Total	283	$ 249	801	$ 882
Line of Credit [Member] | Accounts Receivable Securitization Facility [Member] | Restricted Cash, Current [Member]
Debt Instrument, Collateral Amount	$ 444		$ 444
Line of Credit [Member] | Accounts Receivable Securitization Facility [Member] | Minimum [Member]
Line of Credit Facility, Commitment Fee Percentage			2.00%
Line of Credit [Member] | Accounts Receivable Securitization Facility [Member] | Maximum [Member]
Line of Credit Facility, Commitment Fee Percentage			2.50%

Note 11 - Property, Plant and_3

Note 11 - Property, Plant and Equipment (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Finance Lease, Right-of-Use Asset, before Accumulated Amortization	$ 76,021		$ 76,021		$ 112,334
Finance Lease, Right-of-Use Asset, Accumulated Amortization	29,403		29,403		$ 56,761
Finance Lease, Right-of-Use Asset, Amortization	$ 6,409	$ 6,178	$ 21,456	$ 16,680

Note 11 - Property, Plant and_4

Note 11 - Property, Plant and Equipment - Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Total Property, Plant and Equipment	$ 5,219,429	$ 5,143,696
Less: Accumulated Depreciation, Depletion and Amortization	3,220,472	3,094,634
Total Property, Plant and Equipment, Net	1,998,957	2,049,062
Coal and Other Plant and Equipment [Member]
Total Property, Plant and Equipment	3,189,279	3,134,149
Mining Properties and Mineral Rights [Member]
Total Property, Plant and Equipment	876,762	874,567
Airshafts [Member]
Total Property, Plant and Equipment	470,075	452,976
Mine Development [Member]
Total Property, Plant and Equipment	356,432	354,691
Coal Advance Mining Royalties [Member]
Total Property, Plant and Equipment	$ 326,881	$ 327,313

Note 12 - Other Accrued Liabi_3

Note 12 - Other Accrued Liabilities - Other Accrued Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Commodity Derivatives	$ 144,094	$ 0
Subsidence Liability	94,852	89,554
Accrued Compensation and Benefits	42,419	27,209
Accrued Interest	9,916	6,236
Accrued Other Taxes	4,527	7,126
Accrued Equipment Obligations	0	6,698
Other	15,057	17,815
Postretirement Benefits Other than Pensions	25,456	26,073
Asset Retirement Obligations	25,370	20,587
Pneumoconiosis Benefits	11,993	12,203
Workers' Compensation	9,226	9,653
Total Other Accrued Liabilities	$ 382,910	$ 223,154

Note 13 - Long-term Debt (Detai

Note 13 - Long-term Debt (Details Textual)		Mar. 28, 2019USD ($)	Apr. 30, 2021USD ($)	Sep. 30, 2021USD ($)	Jun. 30, 2021USD ($)	Mar. 31, 2021USD ($)	Sep. 30, 2020USD ($)	Mar. 31, 2020USD ($)	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2017	Nov. 30, 2017USD ($)
Long-term Debt, Current Maturities, Total	[1]			$ 27,651,000					$ 27,651,000					$ 33,731,000
Assets, Total				2,589,747,000			$ 2,554,838,000		2,589,747,000	$ 2,554,838,000				2,523,366,000
Net Income (Loss) Attributable to Parent, Total				(113,789,000)			(7,224,000)		(83,213,000)	(22,840,000)
Gain (Loss) on Extinguishment of Debt, Total				(132,000)			1,078,000		657,000	17,911,000
Proceeds from Reimbursements from Qualified Expenses				3,657,000					25,121,000
Restricted Cash, Total				49,881,000					49,881,000
Long-term Debt, Total				625,348,000					625,348,000					600,589,000
Derivative Liability, Current				1,224,000					1,224,000					2,834,000
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Total				390,000	$ 391,000	$ 414,000	377,000	$ (2,773,000)	1,195,000	(2,408,000)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, Tax				(135,000)			(127,000)		(414,000)	810,000
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax				(565,000)			(575,000)		(1,652,000)	(1,005,000)
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred									1,015,000
Non-Guarantor Subsidiaries [Member]
Assets, Total				89,300,000					89,300,000					123,468,000
Accounts Receivable, after Allowance for Credit Loss, Total				88,496,000					88,496,000					122,639,000
Net Income (Loss) Attributable to Parent, Total				$ 975,000			$ 573,000		(1,150,000)	1,932,000
Forecast [Member]
Derivative, Notional Amount													$ 150,000,000
Senior Secured Second Lien Notes due 2025 [Member]
Repayments of Debt									$ 17,092,000	26,365,000
PEDFA Solid Waste Disposal Revenue Bonds [Member]
Debt Instrument, Interest Rate, Stated Percentage			9.00%	9.00%					9.00%
Debt Instrument, Face Amount			$ 75,000,000
Debt Instrument, Term (Year)			7 years
Proceeds from Issuance of Debt			$ 75,000,000
Long-term Debt, Total				$ 75,000,000					$ 75,000,000					0
Revolving Credit Facility [Member]
Long-term Line of Credit, Total				$ 0					0					0
Loans Payable [Member] | The TLA Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity																	$ 100,000,000
Loans Payable [Member] | Senior Secured Second Lien Notes due 2025 [Member]
Debt Instrument, Covenant, Maximum Amount of Letters of Credit									$ 200,000
Debt Instrument, Covenant, Net Leverage Ratio, Maximum				2					2
Loans Payable [Member] | The TLB Facility [Member]
Long-term Debt, Current Maturities, Total				$ 5,000,000					$ 5,000,000
Long-term Debt, Percentage Bearing Fixed Interest, Amount														50,000,000	$ 150,000,000
Loans Payable [Member] | The TLB Facility [Member] | Forecast [Member]
Long-term Debt, Percentage Bearing Fixed Interest, Amount													$ 50,000,000
Loans Payable [Member] | The TLB Facility [Member] | Maximum [Member]
Debt Instrument, Repayment, Percent of Excess Cash Flow									75.00%
Loans Payable [Member] | The TLB Facility [Member] | Minimum [Member]
Debt Instrument, Repayment, Percent of Excess Cash Flow									0.00%
Loans Payable [Member] | Revolving Credit Facility [Member]
Finance Lease, Liability, Current				19,098,000					$ 19,098,000					20,115,000
Line of Credit Facility, Maximum Borrowing Capacity																	300,000,000
Debt Instrument, Basis Spread on Variable Rate		0.50%
Loans Payable [Member] | Revolving Credit Facility [Member] | Senior Secured Second Lien Notes due 2025 [Member]
Debt Instrument, Covenant, Maximum Additional Borrowings										$ 0
Loans Payable [Member] | The TLB Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity																	400,000,000
Line of Credit [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity		$ 400,000															$ 300,000,000
Letters of Credit Outstanding, Amount				159,684,000					159,684,000					125,938,000
Line of Credit Facility, Remaining Borrowing Capacity				$ 240,316,000					$ 240,316,000					$ 274,062,000
Line of Credit [Member] | Revolving Credit Facility and TLA Facility [Member]
Debt Instrument, Covenant, Net Leverage Ratio, Maximum						3.75
Debt Instrument, Covenant, Fixed Charge Coverage Ratio, Minimum						1
Debt Instrument, Maximum First Lien Gross Leverage Ratio				1.12					1.12
Debt Instrument, Maximum Net Leverage Ratio				1.64					1.64
Debt Instrument, Minimum Fixed Charge Coverage Ratio				1.67					1.67
Line of Credit [Member] | Revolving Credit Facility and TLA Facility [Member] | Forecast [Member]
Debt Instrument, Covenant, Net Leverage Ratio, Maximum											2.75	3.50
Debt Instrument, Covenant, Fixed Charge Coverage Ratio, Minimum											1.10	1.05
Line of Credit [Member] | Revolving Credit Facility and TLA Facility [Member] | Maximum [Member]
Debt Instrument, Covenant, First Lien Gross Leverage Ratio				2.25		2.50			2.25
Line of Credit [Member] | Revolving Credit Facility and TLA Facility [Member] | Maximum [Member] | Forecast [Member]
Debt Instrument, Covenant, Net Leverage Ratio, Maximum												3.25
Debt Instrument, Covenant, First Lien Gross Leverage Ratio											1.75	2
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									$ 17,092,000	$ 26,365,000
Debt Instrument, Repurchased Face Amount				$ 18,040,000			$ 45,176,000		18,040,000	$ 45,176,000
Long-term Debt, Total				149,107,000					149,107,000					$ 167,147,000
Senior Notes [Member] | The TLB Facility [Member]
Repayments of Lines of Credit									5,000,000
Secured Debt [Member] | Other Asset-backed Financing Maturing December 2020 [Member]
Debt Instrument, Collateral Amount				2,267,000					2,267,000					$ 2,813,000
Long-term Debt, Total				$ 2,267,000					$ 2,267,000
Debt, Weighted Average Interest Rate				3.61%					3.61%					3.61%
[1]	Excludes current portion of Finance Lease Obligations of $19,098 and $20,115 at September 30, 2021 and December 31, 2020, respectively.

Note 13 - Long-term Debt - Long

Note 13 - Long-term Debt - Long-term Debt (Details) - USD ($) $ in Thousands		Sep. 30, 2021	Dec. 31, 2020
Long-term Debt, Total		$ 625,348	$ 600,589
Unamortized discount		9,853	9,921
Long-term Debt, Current Maturities, Total	[1]	27,651	33,731
Long-Term Debt		597,697	566,858
MEDCO Revenue Bonds in Series Due September 2025 at 5.75% [Member]
Long-term Debt, Total		102,865	102,865
PEDFA Solid Waste Disposal Revenue Bonds [Member]
Long-term Debt, Total		75,000	0
Term Loan A Facility [Member]
Long-term Debt, Total		41,250	66,250
Other Asset Backed Financing [Member]
Long-term Debt, Total		2,267	2,813
Advance Royalty Commitments [Member]
Long-term Debt, Total		2,185	2,185
Loans Payable [Member] | Term Loan B Facility [Member]
Long-term Debt, Total		262,527	269,250
Unamortized discount		750	938
Senior Notes [Member] | Senior Secured Second Lien Notes due 2025 [Member]
Long-term Debt, Total		$ 149,107	$ 167,147
[1]	Excludes current portion of Finance Lease Obligations of $19,098 and $20,115 at September 30, 2021 and December 31, 2020, respectively.

Note 13 - Long-term Debt - Lo_2

Note 13 - Long-term Debt - Long-term Debt (Details) (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2021	Apr. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2017	Nov. 30, 2017
Unamortized discount	$ 9,853		$ 9,921
MEDCO Revenue Bonds in Series Due September 2025 at 5.75% [Member]
Debt Instrument, Interest Rate, Stated Percentage	5.75%		5.75%
PEDFA Solid Waste Disposal Revenue Bonds [Member]
Debt Instrument, Interest Rate, Stated Percentage	9.00%	9.00%
Term Loan A Facility [Member]
Debt, Weighted Average Interest Rate	5.25%		5.50%
Advance Royalty Commitments [Member]
Debt, Weighted Average Interest Rate	13.68%		13.68%
Loans Payable [Member] | Term Loan B Facility [Member]
Principal Amount	$ 263,277		$ 270,188
Unamortized discount	$ 750		$ 938
Debt, Weighted Average Interest Rate	4.59%		4.65%
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%

Note 14 - Commitments and Con_3

Note 14 - Commitments and Contingent Liabilities (Details Textual) $ in Millions	Aug. 23, 2017	Sep. 30, 2021USD ($)	Dec. 31, 2020USD ($)
Number of Mines Sold		5
Guarantees, Maximum Exposure		$ 7	$ 8
Casey Litigation [Member] | Pending Litigation [Member]
Loss Contingency, Number of Plaintiffs	2
United Mine Workers of America 1992 Benefit Plan Litigation [Member] | Pending Litigation [Member] | Minimum [Member]
Estimated Liability, Annual Servicing Cost, Next Ten Years		10
United Mine Workers of America 1992 Benefit Plan Litigation [Member] | Pending Litigation [Member] | Maximum [Member]
Estimated Liability, Annual Servicing Cost, Next Ten Years		$ 20

Note 14 - Commitments and Con_4

Note 14 - Commitments and Contingent Liabilities - Material Adverse Effect on Company's Financial Condition (Details) $ in Thousands	Sep. 30, 2021USD ($)
Standby Letters of Credit [Member]
Total Amounts Committed	$ 183,990
Less Than 1 Year	142,568
1-3 Years	41,422
3-5 Years	0
Beyond 5 years	0
Standby Letters of Credit [Member] | Employee Related Commitment [Member]
Total Amounts Committed	58,768
Less Than 1 Year	37,074
1-3 Years	21,694
3-5 Years	0
Beyond 5 years	0
Standby Letters of Credit [Member] | Environmental Commitment [Member]
Total Amounts Committed	398
Less Than 1 Year	398
1-3 Years	0
3-5 Years	0
Beyond 5 years	0
Standby Letters of Credit [Member] | Other Commitment [Member]
Total Amounts Committed	124,824
Less Than 1 Year	105,096
1-3 Years	19,728
3-5 Years	0
Beyond 5 years	0
Surety Bond [Member]
Total Amounts Committed	625,692
Less Than 1 Year	568,702
1-3 Years	56,990
3-5 Years	0
Beyond 5 years	0
Surety Bond [Member] | Employee Related Commitment [Member]
Total Amounts Committed	83,524
Less Than 1 Year	48,024
1-3 Years	35,500
3-5 Years	0
Beyond 5 years	0
Surety Bond [Member] | Environmental Commitment [Member]
Total Amounts Committed	537,822
Less Than 1 Year	516,537
1-3 Years	21,285
3-5 Years	0
Beyond 5 years	0
Surety Bond [Member] | Other Commitment [Member]
Total Amounts Committed	4,346
Less Than 1 Year	4,141
1-3 Years	205
3-5 Years	0
Beyond 5 years	0
Other Guarantee Obligations [Member] | Other Commitment [Member]
Total Amounts Committed	6,889
Less Than 1 Year	6,889
1-3 Years	0
3-5 Years	0
Beyond 5 years	$ 0

Note 15 - Derivatives (Details

Note 15 - Derivatives (Details Textual) $ in Thousands, T in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)T	Sep. 30, 2020USD ($)
Unrealized Gain (Loss) on Derivatives and Commodity Contracts, Total	$ (147,306)	$ 0	$ (167,743)	$ 0
Coal Contract [Member]
Derivative, Nonmonetary Notional Amount, Mass (US Ton) | T			2
Unrealized Gain (Loss) on Derivatives and Commodity Contracts, Total	$ 147,306		$ 167,743

Note 15 - Derivatives - Fair Va

Note 15 - Derivatives - Fair Value of Derivatives (Details) - Coal Contract [Member] - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Assets Derivatives, gross	$ 0	$ 0
Liabilities, gross	(167,743)	0
Effect of Counterparty Netting, assets derivatives	0	0
Effect of Counterparty Netting, liabilities	0	0
Assets Derivatives, net	0	0
Liabilities, net	$ (167,743)	$ 0

Note 16 - Fair Value of Finan_3

Note 16 - Fair Value of Financial instruments - Financial Instruments Measured at Fair Value (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Inputs, Level 1 [Member] | Interest Rate Swap [Member]
Interest Rate Swaps	$ 0	$ 0
Fair Value, Inputs, Level 1 [Member] | Commodity Contract [Member]
Interest Rate Swaps	0	0
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member]
Interest Rate Swaps	(1,224)	(2,834)
Fair Value, Inputs, Level 2 [Member] | Commodity Contract [Member]
Interest Rate Swaps	(167,743)	0
Fair Value, Inputs, Level 3 [Member] | Interest Rate Swap [Member]
Interest Rate Swaps	0	0
Fair Value, Inputs, Level 3 [Member] | Commodity Contract [Member]
Interest Rate Swaps	$ 0	$ 0

Note 16 - Fair Value of Finan_4

Note 16 - Fair Value of Financial instruments - Schedule of Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Reported Value Measurement [Member]
Long-Term Debt, Fair Value	$ 635,201	$ 610,510
Estimate of Fair Value Measurement [Member]
Long-Term Debt, Fair Value	$ 647,978	$ 517,862

Note 17 - Segment Information_2

Note 17 - Segment Information (Details Textual)	9 Months Ended
	Sep. 30, 2021
Number of Reportable Segments	2

Note 17 - Segment Information -

Note 17 - Segment Information - Industry Segment (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Revenue		$ 292,016	$ 214,292	$ 925,998	$ 610,688
Adjusted EBITDA		66,564	68,298	257,696	165,477
Assets, Total		2,589,747	2,554,838	2,589,747	2,554,838	$ 2,523,366
Depreciation, Depletion and Amortization		55,977	54,959	168,073	156,057
Capital Expenditures		45,863	19,508	103,318	65,955
Coal Revenue [Member]
Revenue	[1]	258,560	184,375	803,927	542,140
Terminal Revenue [Member]
Revenue		14,108	17,008	49,700	49,407
Freight Revenue [Member]
Revenue		19,348	12,909	72,371	19,141
Intersegment Eliminations [Member]
Revenue		0	0	0	0
Adjusted EBITDA		0	0	0	0
Assets, Total		0	0	0	0
Depreciation, Depletion and Amortization		0	0	0	0
Capital Expenditures		0	0	0	0
Intersegment Eliminations [Member] | Coal Revenue [Member]
Revenue	[1]	0	0	0	0
Intersegment Eliminations [Member] | Terminal Revenue [Member]
Revenue		0	0	0	0
Intersegment Eliminations [Member] | Freight Revenue [Member]
Revenue		0	0	0	0
Pennsylvania Mining Complex [Member] | Operating Segments [Member]
Revenue		275,674	196,975	871,645	560,686
Adjusted EBITDA		69,492	45,272	246,943	135,732
Assets, Total		1,763,319	1,878,350	1,763,319	1,878,350
Depreciation, Depletion and Amortization		50,837	49,944	155,787	145,154
Capital Expenditures		30,665	15,733	83,118	52,687
Pennsylvania Mining Complex [Member] | Operating Segments [Member] | Coal Revenue [Member]
Revenue	[1]	256,326	184,066	799,274	541,545
Pennsylvania Mining Complex [Member] | Operating Segments [Member] | Terminal Revenue [Member]
Revenue		0	0	0	0
Pennsylvania Mining Complex [Member] | Operating Segments [Member] | Freight Revenue [Member]
Revenue		19,348	12,909	72,371	19,141
CONSOL Marine Terminal [Member] | Operating Segments [Member]
Revenue		14,108	17,008	49,700	49,407
Adjusted EBITDA		7,319	11,342	30,244	32,556
Assets, Total		105,134	105,405	105,134	105,405
Depreciation, Depletion and Amortization		1,202	1,283	3,616	3,800
Capital Expenditures		453	740	565	1,360
CONSOL Marine Terminal [Member] | Operating Segments [Member] | Coal Revenue [Member]
Revenue	[1]	0	0	0	0
CONSOL Marine Terminal [Member] | Operating Segments [Member] | Terminal Revenue [Member]
Revenue		14,108	17,008	49,700	49,407
CONSOL Marine Terminal [Member] | Operating Segments [Member] | Freight Revenue [Member]
Revenue		0	0	0	0
Other Segments [Member] | Operating Segments [Member]
Revenue		2,234	309	4,653	595
Adjusted EBITDA		(10,247)	11,684	(19,491)	(2,811)
Assets, Total		721,294	571,083	721,294	571,083
Depreciation, Depletion and Amortization		3,938	3,732	8,670	7,103
Capital Expenditures		14,745	3,035	19,635	11,908
Other Segments [Member] | Operating Segments [Member] | Coal Revenue [Member]
Revenue	[1]	2,234	309	4,653	595
Other Segments [Member] | Operating Segments [Member] | Terminal Revenue [Member]
Revenue		0	0	0	0
Other Segments [Member] | Operating Segments [Member] | Freight Revenue [Member]
Revenue		$ 0	$ 0	$ 0	$ 0
[1]	For the three and six months ended September 30, 2021 and 2020, the PAMC segment had revenues from the following customers, each comprising over 10% of the Company's total sales

Note 17 - Segment Information_3

Note 17 - Segment Information - Segment Revenue (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020		Sep. 30, 2021	Sep. 30, 2020
Revenue	$ 292,016	$ 214,292		$ 925,998	$ 610,688
Revenue Benchmark [Member] | Pennsylvania Mining Complex [Member] | Customer Concentration Risk [Member] | Customer A [Member]
Revenue	43,947	45,818	[1]	133,863	94,647
Revenue Benchmark [Member] | Pennsylvania Mining Complex [Member] | Customer Concentration Risk [Member] | Customer B [Member]
Revenue	31,520			114,865	183,560
Revenue Benchmark [Member] | Pennsylvania Mining Complex [Member] | Customer Concentration Risk [Member] | Customer C [Member]
Revenue	$ 39,216	$ 36,888		110,253	$ 86,631
Revenue Benchmark [Member] | Pennsylvania Mining Complex [Member] | Customer Concentration Risk [Member] | Customer D [Member]
Revenue				$ 140,314
[1]	Revenues from these customers during the periods presented were less than 10% of the Company's total sales.

Note 17 - Segment Information_4

Note 17 - Segment Information - Adjusted EBITDA (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Loss Before Income Tax	$ (154,047)	$ (3,442)	$ (127,179)	$ (27,805)
Interest Expense, net	16,045	15,723	47,493	46,116
Loss (Gain) on Debt Extinguishment	132	(1,078)	(657)	(17,911)
Interest Income	(737)	(76)	(2,406)	(442)
Depreciation, Depletion and Amortization	55,977	54,959	168,073	156,057
Unrealized Loss on Commodity Derivative Instruments	147,306	0	167,743	0
Pension Settlement	0	0	22	0
Stock/Unit-Based Compensation	1,888	2,212	4,607	9,462
Adjusted EBITDA	$ 66,564	$ 68,298	$ 257,696	$ 165,477

Note 18 - Related Party Trans_3

Note 18 - Related Party Transactions (Details Textual)	Dec. 30, 2020USD ($)shares	Sep. 30, 2021USD ($)shares
Stock Issued During Period, Shares, Acquisitions (in shares)	7,967,690
CONSOL Coal Resources L P [Member]
Common Unit, Issued (in shares)	10,912,138
Common Stock, Fixed Exchange Ratio	0.73
Conversion of Stock, Amount Converted | $	$ 51,710
CONSOL Coal Resources L P [Member] | Affiliated Company Credit Agreement [Member] | Affiliated Entity [Member]
Common Unit, Issued (in shares)		37,322,410
Repayments of Long-term Debt, Total | $		$ 176,535

Note 18 - Related Party Trans_4

Note 18 - Related Party Transactions - Changes for Services (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020
Total Services from CONSOL Energy	$ 2,776	$ 9,142
Operating and Other Costs [Member]
Total Services from CONSOL Energy	1,006	2,715
Selling, General and Administrative Expenses [Member]
Total Services from CONSOL Energy	$ 1,770	$ 6,427

Note 19 - Stock and Debt Repu_2

Note 19 - Stock and Debt Repurchases (Details Textual) - USD ($) shares in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Apr. 01, 2021	Dec. 31, 2020	Dec. 31, 2017	Nov. 30, 2017
Stock and Debt Repurchase Program, Authorized Amount			$ 320,000
Stock Repurchased and Retired During Period, Shares (in shares)	0	0
Senior Secured Second Lien Notes due 2025 [Member]
Repayments of Debt	$ 17,092,000	$ 26,365,000
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%
Repayments of Debt	$ 17,092,000	$ 26,365,000
Debt Instrument, Repurchased Face Amount	$ 18,040,000	$ 45,176,000