CNX Resources (CNX) 10-Q 29 Jul 21 2021 Q2 Quarterly report Financial data

Cover Page

Cover Page - shares	6 Months Ended
	Jun. 30, 2021	Jul. 15, 2021
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2021
Document Transition Report	false
Entity File Number	001-14901
Entity Registration Name	CNX Resources Corporation
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	51-0337383
Entity Address, Address Line One	CNX Center
Entity Address, Address Line Two	1000 CONSOL Energy Drive Suite 400
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	485-4000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		217,921,030
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Current Fiscal Year End	--12-31
Entity Central Index Key	0001070412
Common Stock ($.01 par value)
Entity Information [Line Items]
Title of 12(b) Security	Common Stock ($.01 par value)
Trading Symbol	CNX
Security Exchange Name	NYSE
Preferred Share Purchase Rights
Entity Information [Line Items]
Title of 12(b) Security	Preferred Share Purchase Rights
Security Exchange Name	NYSE
No Trading Symbol Flag	true

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue and Other Operating (Loss) Income:
(Loss) Gain on Commodity Derivative Instruments	$ (538,859)	$ (63,303)	$ (505,445)	$ 51,839
Other Revenue and Operating Income	25,494	15,944	50,445	39,308
Total Revenue and Other Operating (Loss) Income	(127,210)	148,841	345,864	565,200
Operating Expense
Lease Operating Expense	10,248	10,244	19,516	20,277
Production, Ad Valorem, and Other Fees	7,445	5,384	13,413	11,546
Depreciation, Depletion and Amortization	122,607	113,545	251,551	242,709
Purchased Gas Costs	14,551	19,989	46,961	44,987
Impairment of Exploration and Production Properties	0	0	0	61,849
Impairment of Goodwill	0	0	0	473,045
Selling, General, and Administrative Costs	23,677	23,419	51,998	53,657
Other Operating Expense	15,140	26,596	30,798	47,277
Total Operating Expense	280,711	262,512	580,516	1,105,811
Other Expense
Other Expense	5,865	4,799	10,231	9,985
Gain on Asset Sales and Abandonments, net	(7,186)	(5,938)	(10,060)	(17,992)
Loss (Gain) on Debt Extinguishment	0	344	0	(10,919)
Interest Expense	39,576	46,256	75,948	95,252
Total Other Expense	38,255	45,461	76,119	76,326
Total Costs and Expenses	318,966	307,973	656,635	1,182,137
Loss Before Income Tax	(446,176)	(159,132)	(310,771)	(616,937)
Income Tax Benefit	(92,117)	(28,646)	(54,737)	(181,228)
Net Loss	(354,059)	(130,486)	(256,034)	(435,709)
Less: Net Income Attributable to Noncontrolling Interest	0	15,263	0	39,126
Net Loss Attributable to CNX Resources Shareholders	$ (354,059)	$ (145,749)	$ (256,034)	$ (474,835)
Loss per Share
Basic (in usd per share)	$ (1.61)	$ (0.78)	$ (1.16)	$ (2.54)
Diluted (in usd per share)	(1.61)	(0.78)	(1.16)	(2.54)
Dividends Declared (in usd per share)	$ 0	$ 0	$ 0	$ 0
Natural Gas, NGL and Oil Revenue
Revenue and Other Operating (Loss) Income:
Revenues	$ 369,449	$ 175,776	$ 750,674	$ 427,270
Purchased Gas Revenue
Revenue and Other Operating (Loss) Income:
Revenues	16,706	20,424	50,190	46,783
Transportation, Gathering and Compression
Operating Expense
Cost of Goods Sold	84,114	60,025	161,273	143,267
Exploration and Production Related Other Costs
Operating Expense
Cost of Goods Sold	$ 2,929	$ 3,310	$ 5,006	$ 7,197

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net Loss	$ (354,059)	$ (130,486)	$ (256,034)	$ (435,709)
Other Comprehensive Income:
Actuarially Determined Long-Term Liability Adjustments (Net of tax: $(48), $(39), $(96), $(79))	136	111	271	223
Comprehensive Loss	(353,923)	(130,375)	(255,763)	(435,486)
Less: Comprehensive Income Attributable to Noncontrolling Interest	0	15,263	0	39,126
Comprehensive Loss Attributable to CNX Resources Shareholders	$ (353,923)	$ (145,638)	$ (255,763)	$ (474,612)

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Parentheticals) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Adjustment For Actuarially Determined Liabilities
Other comprehensive income, tax expense	$ (48)	$ (39)	$ (96)	$ (79)

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current Assets:
Cash and Cash Equivalents	$ 39,365	$ 15,617
Restricted Cash	768	735
Accounts and Notes Receivable:
Trade, net	157,667	145,929
Other Receivables, net	10,727	4,238
Supplies Inventories	5,698	9,657
Recoverable Income Taxes	0	88
Derivative Instruments	107,625	84,657
Prepaid Expenses	12,126	12,411
Total Current Assets	333,976	273,332
Property, Plant and Equipment:
Property, Plant and Equipment	11,128,496	10,963,996
Less—Accumulated Depreciation, Depletion and Amortization	4,119,856	3,938,451
Total Property, Plant and Equipment—Net	7,008,640	7,025,545
Other Non-Current Assets:
Operating Lease Right-of-Use Asset	83,618	108,683
Derivative Instruments	204,459	188,237
Goodwill	323,314	323,314
Other Intangible Assets	86,819	90,095
Restricted Cash	4,751	5,247
Other	26,533	27,311
Total Other Non-Current Assets	729,494	742,887
TOTAL ASSETS	8,072,110	8,041,764
Current Liabilities:
Accounts Payable	118,574	118,185
Derivative Instruments	415,774	42,329
Current Portion of Finance Lease Obligations	406	6,876
Current Portion of Long-Term Debt	23,098	22,574
Current Portion of Operating Lease Obligations	47,198	52,575
Other Accrued Liabilities	204,145	198,773
Total Current Liabilities	809,195	441,312
Non-Current Liabilities:
Long-Term Debt	2,265,970	2,401,427
Finance Lease Obligations	854	1,057
Operating Lease Obligations	36,569	53,235
Derivative Instruments	285,865	127,290
Deferred Income Taxes	411,380	466,253
Asset Retirement Obligations	81,903	84,712
Other	43,443	44,041
Total Non-Current Liabilities	3,125,984	3,178,015
TOTAL LIABILITIES	3,935,179	3,619,327
Stockholders’ Equity:
Common Stock, $.01 Par Value; 500,000,000 Shares Authorized, 218,664,158 Issued and Outstanding at June 30, 2021; 220,440,993 Issued and Outstanding at December 31, 2020	2,191	2,208
Capital in Excess of Par Value	2,950,083	2,959,357
Preferred Stock, 15,000,000 shares authorized, None issued and outstanding	0	0
Retained Earnings	1,199,570	1,476,056
Accumulated Other Comprehensive Loss	(14,913)	(15,184)
TOTAL STOCKHOLDERS' EQUITY	4,136,931	4,422,437
TOTAL LIABILITIES AND EQUITY	$ 8,072,110	$ 8,041,764

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - $ / shares	Jun. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Common Stock, Par Value (in usd per share)	$ 0.01	$ 0.01
Common Stock, Shares Authorized (in shares)	500,000,000	500,000,000
Common Stock, Issued (in shares)	218,664,158	220,440,993
Common Stock, Outstanding (in shares)	218,664,158	220,440,993
Preferred Stock, Authorized (in shares)	15,000,000	15,000,000
Preferred Stock, Issued (in shares)	0	0
Preferred Stock, Outstanding (in shares)	0	0

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Loss	Total CNX Resources Stockholders’ Equity	Non- Controlling Interest
Beginning Balance at Dec. 31, 2019	$ 4,962,309	$ 1,870	$ 2,199,605	$ 1,971,676	$ (12,605)	$ 4,160,546	$ 801,763
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (Loss) Income	(435,709)			(474,835)		(474,835)	39,126
Issuance of Common Stock	1,654	8	1,646			1,654
Shares Withheld for Taxes	(1,953)			(1,644)		(1,644)	(309)
Amortization of Stock-Based Compensation Awards	9,406		8,522			8,522	884
Equity Component of Convertible Senior Notes, net of Issuance Costs	78,307		78,307			78,307
Purchase of Capped Call	(26,351)		(26,351)			(26,351)
Other Comprehensive Income	223				223	223
Distributions to CNXM Noncontrolling Interest Holders	(20,932)						(20,932)
Ending Balance at Jun. 30, 2020	4,566,954	1,878	2,261,729	1,495,197	(12,382)	3,746,422	820,532
Beginning Balance at Dec. 31, 2019	4,962,309	1,870	2,199,605	1,971,676	(12,605)	4,160,546	801,763
Ending Balance at Dec. 31, 2020	4,422,437	2,208	2,959,357	1,476,056	(15,184)	4,422,437
Beginning Balance at Mar. 31, 2020	4,644,710	1,874	2,205,941	1,641,009	(12,493)	3,836,331	808,379
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (Loss) Income	(130,486)			(145,749)		(145,749)	15,263
Issuance of Common Stock	1,650	4	1,646			1,650
Shares Withheld for Taxes	(63)			(63)		(63)
Amortization of Stock-Based Compensation Awards	2,566		2,186			2,186	380
Equity Component of Convertible Senior Notes, net of Issuance Costs	78,307		78,307			78,307
Purchase of Capped Call	(26,351)		(26,351)			(26,351)
Other Comprehensive Income	111				111	111
Distributions to CNXM Noncontrolling Interest Holders	(3,490)						(3,490)
Ending Balance at Jun. 30, 2020	4,566,954	1,878	2,261,729	1,495,197	(12,382)	3,746,422	$ 820,532
Beginning Balance at Dec. 31, 2020	4,422,437	2,208	2,959,357	1,476,056	(15,184)	4,422,437
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (Loss) Income	(256,034)			(256,034)		(256,034)
Issuance of Common Stock	4,801	7	4,794			4,801
Purchase and Retirement of Common Stock	(40,678)	(31)	(24,731)	(15,916)		(40,678)
Shares Withheld for Taxes	(4,536)			(4,536)		(4,536)
Amortization of Stock-Based Compensation Awards	10,703	7	10,696			10,703
Equity Component of Convertible Senior Notes, net of Issuance Costs	(33)		(33)			(33)
Other Comprehensive Income	271				271	271
Ending Balance at Jun. 30, 2021	4,136,931	2,191	2,950,083	1,199,570	(14,913)	4,136,931
Beginning Balance at Mar. 31, 2021	4,510,410	2,207	2,959,934	1,563,318	(15,049)	4,510,410
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (Loss) Income	(354,059)			(354,059)		(354,059)
Issuance of Common Stock	2		2			2
Purchase and Retirement of Common Stock	(22,691)	(17)	(13,030)	(9,644)		(22,691)
Shares Withheld for Taxes	(45)			(45)		(45)
Amortization of Stock-Based Compensation Awards	3,178	1	3,177			3,178
Other Comprehensive Income	136				136	136
Ending Balance at Jun. 30, 2021	$ 4,136,931	$ 2,191	$ 2,950,083	$ 1,199,570	$ (14,913)	$ 4,136,931

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash Flows from Operating Activities:
Net Loss	$ (256,034)	$ (435,709)
Adjustments to Reconcile Net Loss to Net Cash Provided by Operating Activities:
Depreciation, Depletion and Amortization	251,551	242,709
Amortization of Deferred Financing Costs	12,156	8,795
Impairment of Exploration and Production Properties	0	61,849
Impairment of Goodwill	0	473,045
Stock-Based Compensation	10,703	9,406
Gain on Asset Sales and Abandonments, net	(10,060)	(17,992)
Gain on Debt Extinguishment	0	(10,919)
Loss (Gain) on Commodity Derivative Instruments	505,445	(51,839)
(Gain) Loss on Other Derivative Instruments	(4,659)	14,237
Net Cash (Paid) Received in Settlement of Commodity Derivative Instruments	(7,954)	293,417
Deferred Income Taxes	(54,970)	(125,429)
Other	(704)	1,552
Changes in Operating Assets:
Accounts and Notes Receivable	(18,191)	68,270
Recoverable Income Taxes	88	(52,015)
Supplies Inventories	1,936	(3,333)
Prepaid Expenses	586	6,542
Changes in Other Assets	(1,084)	396
Changes in Operating Liabilities:
Accounts Payable	14,701	(15,488)
Accrued Interest	14,762	(5,558)
Other Operating Liabilities	720	(49,620)
Changes in Other Liabilities	(117)	(1,131)
Net Cash Provided by Operating Activities	458,875	411,185
Cash Flows from Investing Activities:
Capital Expenditures	(252,387)	(286,901)
Proceeds from Asset Sales	11,969	26,126
Net Cash Used in Investing Activities	(240,418)	(260,775)
Cash Flows from Financing Activities:
Payments on Miscellaneous Borrowings	(2,526)	(3,569)
Payments on Long-Term Notes	0	(468,865)
Net (Payments on) Proceeds from CNXM Revolving Credit Facility	(131,000)	7,250
Net Payments on CNX Revolving Credit Facility	(800)	(111,000)
Net (Payments on) Proceeds from CSG Non-Revolving Credit Facilities	(13,113)
Net (Payments on) Proceeds from CSG Non-Revolving Credit Facilities		169,583
Proceeds from Issuance of Convertible Senior Notes	0	334,650
Purchase of Capped Call Related to Convertible Senior Notes	0	(35,673)
Distributions to CNXM Noncontrolling Interest Holders	0	(20,932)
Proceeds from Issuance of Common Stock	4,801	1,654
Shares Withheld for Taxes	(4,536)	(1,953)
Purchases of Common Stock	(46,678)	0
Debt Issuance and Financing Fees	(1,320)	(11,917)
Net Cash Used in Financing Activities	(195,172)	(140,772)
Net Increase in Cash, Cash Equivalents and Restricted Cash	23,285	9,638
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	21,599	16,283
Cash, Cash Equivalents, and Restricted Cash at End of Period	$ 44,884	$ 25,921

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	BASIS OF PRESENTATION: The accompanying Unaudited Consolidated Financial Statements have been prepared in accordance with generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Operating results for the three and six months ended June 30, 2021 are not necessarily indicative of the results that may be expected for future periods. The Consolidated Balance Sheet at December 31, 2020 has been derived from the Audited Consolidated Financial Statements at that date but does not include all the notes required by generally accepted accounting principles for complete financial statements. For further information, refer to the Consolidated Financial Statements and related notes for the year ended December 31, 2020 included in CNX Resources Corporation's ("CNX," "CNX Resources," the "Company," "we," "us," or "our") Annual Report on Form 10-K as filed with the Securities and Exchange Commission (SEC) on February 9, 2021. On September 28, 2020, the Merger (as defined in Note 13 – Acquisitions and Dispositions) of CNX Midstream Partners LP (CNXM) was completed. Prior to the Merger, public unitholders held a 46.9% equity interest in CNXM and CNX owned the remaining 53.1% equity interest. The earnings of CNXM that were attributed to its common units held by the public prior to the Merger are reflected in net income attributable to noncontrolling interest in the Consolidated Statements of Income. There were no changes in our ownership interest in CNXM during the three and six months ended June 30, 2021 and 2020. Certain amounts in prior periods have been reclassified to conform to the current period presentation. Cash, Cash Equivalents, and Restricted Cash The following table provides a reconciliation of cash, cash equivalents, and restricted cash to amounts shown in the statement of cash flows: June 30, 2021 2020 Cash and Cash Equivalents $ 39,365 $ 19,607 Restricted Cash, Current Portion 768 738 Restricted Cash, Less Current Portion 4,751 5,576 Total Cash, Cash Equivalents, and Restricted Cash $ 44,884 $ 25,921 Restricted Cash Restricted cash consists of cash that the Company is contractually obligated to maintain in accordance with the terms of the Cardinal States Gathering LLC and CSG Holdings II LLC Credit Agreement, each dated March 13, 2020 (See Note 9 - Long-Term Debt for more information). Receivables As of June 30, 2021 and December 31, 2020, Accounts Receivable - Trade were $157,667 and $145,929, respectively, and Other Receivables were $10,727 and $4,238, respectively. The measurement of expected credit losses is based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. Management records an allowance for credit losses related to the collectability of third-party customers' receivables using the historical aging of the customer receivable balance. The collectability is determined based on past events, including historical experience, customer credit rating, as well as current market conditions. CNX monitors customer ratings and collectability on an on-going basis. Account balances will be charged off against the allowance after all means of collection have been exhausted and the potential for recovery is considered remote. The following represents the roll forward of the allowance for credit losses for the six months ended: June 30, 2021 2020 Allowance for Credit Losses - Trade, Beginning of Year $ 84 $ — Provision for Expected Credit Losses — 78 Allowance for Credit Losses - Trade, End of Period $ 84 $ 78 Allowance for Credit Losses - Other Receivables, Beginning of Year $ 3,248 $ 2,463 Provision for Expected Credit Losses (55) 2,736 Write-off of Uncollectible Accounts (15) (69) Allowance for Credit Losses - Other Receivables, End of Period $ 3,178 $ 5,130

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Earnings Per Share	EARNINGS PER SHARE: Basic earnings per share is computed by dividing net income attributable to CNX shareholders by the weighted average shares outstanding during the reporting period. Diluted earnings per share is computed similarly to basic earnings per share, except that the weighted average shares outstanding are increased to include, if dilutive, additional shares from stock options, restricted stock units, performance share units and shares issuable upon conversion of CNX's outstanding Convertible Notes (See Note 9 - Long-Term Debt). The number of additional shares is calculated by assuming that outstanding stock options were exercised, that outstanding restricted stock units and performance share units were released, that the shares that are issuable from the Convertible Notes are converted (subject to the considerations discussed further in the paragraph below), and that the proceeds from such activities were used to acquire shares of common stock at the average market price during the reporting period. In periods when CNX recognizes a net loss, the impact of outstanding stock awards and the potential share settlement impact related to CNX's Convertible Notes are excluded from the diluted loss per share calculation as their inclusion would have an antidilutive effect. Pursuant to the Merger (See Note 13 - Acquisitions and Dispositions for more information), all outstanding phantom units previously granted under the CNXM long-term incentive plan were converted into the right to receive 0.88 shares of common stock of CNX. As such, all outstanding phantom units were converted, effective as of the closing of the Merger, into CNX restricted stock units. Each CNX restricted stock unit is subject to the same vesting, forfeiture and other terms and conditions applicable to the converted CNXM phantom units. Under Accounting Standards Codification Topic 718, Compensation - Stock Compensation, it was determined that there was no additional compensation cost to record as the conversion of awards did not result in incremental fair value. CNXM's dilutive units did not have a material impact on the Company's earnings per share calculations for the three or six months ended June 30, 2020. 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 antidilutive: For the Three Months Ended June 30, For the Six Months Ended June 30, 2021 2020 2021 2020 Anti-Dilutive Options 3,029,168 4,256,409 3,029,168 4,256,409 Anti-Dilutive Restricted Stock Units 2,484,443 2,009,678 2,484,443 2,009,678 Anti-Dilutive Performance Share Units 1,011,443 651,131 1,011,443 651,131 6,525,054 6,917,218 6,525,054 6,917,218 The Company expects to settle the principal amount of the Convertible Notes in cash. As a result, only the amount by which the conversion value exceeds the aggregated principal amount of the Convertible Notes is included in the diluted earnings per share computation under the treasury stock method. The conversion spread has a dilutive impact on diluted earnings per share when the average market price of the Company's common stock for a given period exceeds the initial conversion price of $12.84 per share for the Convertible Notes. In connection with the Convertible Notes' issuance, the Company entered into privately negotiated capped call transactions with certain counterparties (the "Capped Calls" and "Capped Call Transactions"), which were not included in calculating the number of diluted shares outstanding, as their effect would have been anti-dilutive. The table below sets forth the share-based awards that have been exercised or released: For the Three Months Ended June 30, For the Six Months Ended June 30, 2021 2020 2021 2020 Options 205 239,839 656,573 239,839 Restricted Stock Units 34,056 163,157 735,813 504,040 Performance Share Units — — 291,653 274,716 34,261 402,996 1,684,039 1,018,595 The computations for basic and diluted loss per share are as follows: For the Three Months Ended June 30, For the Six Months Ended June 30, 2021 2020 2021 2020 Net Loss $ (354,059) $ (130,486) $ (256,034) $ (435,709) Less: Net Income Attributable to Noncontrolling Interest — 15,263 — 39,126 Net Loss Attributable to CNX Resources Shareholders $ (354,059) $ (145,749) $ (256,034) $ (474,835) Weighted-Average Shares of Common Stock Outstanding 219,897,242 187,316,463 219,910,365 187,117,412 Effect of Diluted Shares* — — — — Weighted-Average Diluted Shares of Common Stock Outstanding 219,897,242 187,316,463 219,910,365 187,117,412 Loss per Share: Basic $ (1.61) $ (0.78) $ (1.16) $ (2.54) Diluted $ (1.61) $ (0.78) $ (1.16) $ (2.54)

Revenue From Contracts With Cus

Revenue From Contracts With Customers	6 Months Ended
	Jun. 30, 2021
Revenue from Contract with Customer [Abstract]
Revenue From Contracts With Customers	REVENUE FROM CONTRACTS WITH CUSTOMERS: Revenues are recognized when control of the promised goods or services is transferred to the Company’s customers, in an amount that reflects the consideration the Company expects to be entitled to in exchange for those goods or services. The Company has elected to exclude all taxes from the measurement of transaction price. For natural gas, NGL and oil, and purchased gas revenue, the Company generally considers the delivery of each unit (MMBtu or Bbl) to be a separate performance obligation that is satisfied upon delivery. Payment terms for these contracts typically require payment within 25 days of the end of the calendar month in which the hydrocarbons are delivered. A significant number of these contracts contain variable consideration because the payment terms refer to market prices at future delivery dates. In these situations, the Company has not identified a standalone selling price because the terms of the variable payments relate specifically to the Company’s efforts to satisfy the performance obligations. A portion of the contracts contain fixed consideration (i.e. fixed price contracts or contracts with a fixed differential to NYMEX or index prices). The fixed consideration is allocated to each performance obligation on a relative standalone selling price basis, which requires judgment from management. For these contracts, the Company generally concludes that the fixed price or fixed differentials in the contracts are representative of the standalone selling price. Revenue associated with natural gas, NGL and oil as presented on the accompanying Consolidated Statements of Income represent the Company’s share of revenues net of royalties and excluding revenue interests owned by others. When selling natural gas, NGL and oil on behalf of royalty owners or working interest owners, the Company is acting as an agent and thus reports the revenue on a net basis. Included in Other Revenue and Operating Income in the Consolidated Statements of Income and in the below table are revenues generated from natural gas gathering services provided to third-parties. The gas gathering services are interruptible in nature and include charges for the volume of gas actually gathered and do not guarantee access to the system. Volumetric based fees are based on actual volumes gathered. The Company generally considers the interruptible gathering of each unit (MMBtu) of natural gas as a separate performance obligation. Payment terms for these contracts typically require payment within 25 days of the end of the calendar month in which the hydrocarbons are gathered. Disaggregation of Revenue The following table is a disaggregation of revenue by major source: For the Three Months Ended June 30, For the Six Months Ended June 30, 2021 2020 2021 2020 Revenue from Contracts with Customers: Natural Gas Revenue $ 320,982 $ 168,510 $ 668,358 $ 398,108 NGL Revenue 41,521 6,226 73,384 25,638 Oil/Condensate Revenue 6,946 1,040 8,932 3,524 Total Natural Gas, NGL and Oil Revenue 369,449 175,776 750,674 427,270 Purchased Gas Revenue 16,706 20,424 50,190 46,783 Other Sources of Revenue and Other Operating (Loss) Income: (Loss) Gain on Commodity Derivative Instruments (538,859) (63,303) (505,445) 51,839 Other Revenue and Operating Income 25,494 15,944 50,445 39,308 Total Revenue and Other Operating (Loss) Income $ (127,210) $ 148,841 $ 345,864 $ 565,200 The disaggregated revenue information corresponds with the Company’s segment reporting found in Note 14 - Segment Information. Contract Balances CNX invoices its customers once a performance obligation has been satisfied, at which point payment is unconditional. Accordingly, CNX's contracts with customers do not give rise to contract assets or liabilities under ASC 606. The Company has no contract assets recognized from the costs to obtain or fulfill a contract with a customer. The opening balance as of January 1, 2021 and the closing balance as of June 30, 2021 of the Company’s receivables related to contracts with customers were $145,929 and $157,667, respectively. Transaction Price Allocated to Remaining Performance Obligations ASC 606 requires that the Company disclose the aggregate amount of transaction price that is allocated to performance obligations that have not yet been satisfied. However, the guidance provides certain practical expedients that limit this requirement, including when variable consideration is allocated entirely to a wholly unsatisfied performance obligation or to a wholly unsatisfied promise to transfer a distinct good or service that forms part of a series. A significant portion of CNX's natural gas, NGL and oil and purchased gas revenue is short-term in nature with a contract term of one year or less. For those contracts, CNX has utilized the practical expedient in ASC 606-10-50-14 exempting the Company from disclosure of the transaction price allocated to remaining performance obligations if the performance obligation is part of a contract that has an original expected duration of one year or less. For revenue associated with contract terms greater than one year, a significant portion of the consideration in those contracts is variable in nature and the Company allocates the variable consideration in its contract entirely to each specific performance obligation to which it relates. Therefore, any remaining variable consideration in the transaction price is allocated entirely to wholly unsatisfied performance obligations. As such, the Company has not disclosed the value of unsatisfied performance obligations pursuant to the practical expedient. For revenue associated with contract terms greater than one year with a fixed price component, the aggregate amount of the transaction price allocated to remaining performance obligations was $75,892 as of June 30, 2021. The Company expects to recognize net revenue of $20,918 in the next 12 months and $17,438 over the following 12 months, with the remainder recognized thereafter. For revenue associated with CNX's midstream contracts, which also have terms greater than one year, the interruptible gathering of each unit of natural gas represents a separate performance obligation; therefore, future volumes are wholly unsatisfied, and disclosure of the transaction price allocated to remaining performance obligations is not required. Prior-Period Performance Obligations CNX records revenue in the month production is delivered to the purchaser. However, settlement statements for certain natural gas, NGL and oil revenue may not be received for 30 to 90 days after the date production is delivered, and as a result, the Company is required to estimate the amount of production delivered to the purchaser and the price that will be received for the sale of the product. CNX records the differences between the estimate and the actual amounts received in the month that payment is received from the purchaser. The Company has existing internal controls for its revenue estimation process and the related accruals, and any identified differences between its revenue estimates and the actual revenue received historically have not been significant. For the three and six months ended June 30, 2021 and 2020, revenue recognized in the current reporting period related to performance obligations satisfied in a prior reporting period was not material.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2021
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES: The effective tax rates for the three and six months ended June 30, 2021 were 20.6% and 17.6%, respectively. The effective tax rates for the three and six months ended June 30, 2020 were 18.0% and 29.4%, respectively. The effective tax rate for the three and six months ended June 30, 2021 differs from the U.S. federal statutory rate of 21.0% primarily due to the impact of equity compensation and state taxes. The effective tax rate for the three and six months ended June 30, 2020 differs from the U.S. federal statutory rate of 21.0% primarily due to the impact of noncontrolling interest (See Note 13 - Acquisitions and Dispositions for more information), equity compensation, and state taxes. On March 27, 2020, the United States enacted the Coronavirus Aid, Relief, and Economic Security Act (the “Act”) which, among other things, removed the 80% taxable income limitation for utilization of net operating losses generated in tax years 2018 through 2020, allowing for 5-year net operating loss carrybacks, increased the adjusted taxable income limitation for the disallowance of interest expense from 30% to 50%, and provided for refunds of any remaining alternative minimum tax (AMT) credits. As a result of the Act, the Company recorded in the first quarter of 2020 AMT refunds of $102,482 in Recoverable Income Taxes in the Consolidated Balance Sheets for the AMT refund received in 2020. The impact of other tax implications of the Act on the financial statements and related disclosures are immaterial. The total amount of uncertain tax positions at June 30, 2021 and December 31, 2020 was $31,891. If these uncertain tax positions were recognized, approximately $31,891 would affect CNX's effective tax rate at June 30, 2021 and December 31, 2020. There was no change to the unrecognized tax benefits during the three and six months ended June 30, 2021. CNX recognizes accrued interest and penalties related to uncertain tax positions in interest expense and income tax expense, respectively. As of June 30, 2021 and December 31, 2020, CNX had no accrued liabilities for interest and penalties related to uncertain tax positions. CNX and its subsidiaries file federal income tax returns with the United States and tax returns within various states. With few exceptions, the Company is no longer subject to United States federal, state, local, or non-U.S. income tax examinations by tax authorities for the years before 2016. The Internal Revenue Service and the Joint Committee on Taxation concluded its review of tax years 2016 through 2017 during the third quarter of 2020.

Property, Plant and Equipment

Property, Plant and Equipment	6 Months Ended
	Jun. 30, 2021
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	PROPERTY, PLANT AND EQUIPMENT: June 30, December 31, Intangible Drilling Cost $ 5,127,989 $ 4,965,252 Gas Gathering Equipment 2,459,197 2,510,917 Proved Gas Properties 1,271,774 1,253,094 Gas Wells and Related Equipment 1,164,025 1,120,061 Unproved Gas Properties 718,042 725,705 Surface Land and Other Equipment 197,956 199,322 Other 189,513 189,645 Total Property, Plant and Equipment 11,128,496 10,963,996 Less: Accumulated Depreciation, Depletion and Amortization 4,119,856 3,938,451 Total Property, Plant and Equipment - Net $ 7,008,640 $ 7,025,545 Impairment of Proved Property CNX performs a quantitative impairment test whenever events or changes in circumstances indicate that an asset group's carrying amount may not be recoverable, over proved properties using forward commodity prices, timing, methods and other assumptions consistent with historical periods. When indicators of impairment are present, tests require that the Company first compare expected future undiscounted cash flows by asset group to their respective carrying values. If the carrying amount exceeds the estimated undiscounted future cash flows, a reduction of the carrying amount of the natural gas properties to their estimated fair values is required, which is generally determined based on an estimation of discounted cash flows using significant assumptions including projected revenues, future commodity prices, and a market-specific weighted average cost of capital which are affected by expectations about future market and economic conditions.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	6 Months Ended
	Jun. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	GOODWILL AND OTHER INTANGIBLE ASSETS: In December 2017, CNX Gas entered into a purchase agreement with Noble Energy, pursuant to which CNX Gas acquired Noble’s 50% membership interest in CNX Gathering (then named CONE Gathering LLC), for a cash purchase price of $305,000 (the "Midstream Acquisition"). Prior to the Midstream Acquisition, the Company accounted for its 50% interest in CNX Gathering as an equity method investment as the Company had the ability to exercise significant influence, but not control, over the operating and financial policies of the midstream operations. In conjunction with the Midstream Acquisition, the Company obtained a controlling interest in CNX Gathering and control over the Partnership. Accordingly, the Midstream Acquisition was accounted for as a business combination using the acquisition method of accounting pursuant to ASC Topic 805, Business Combinations, or ASC 805. ASC 805 requires that, in circumstances where a business combination is achieved in stages (or step acquisition), previously held equity interests are remeasured at fair value. The fair value assigned to the previously held equity interest in CNX Gathering and CNXM was $799,033 and was determined using the income approach, based on a discounted cash flow methodology. As part of the allocation of purchase price and in connection with the fair value of consideration transferred at closing on January 3, 2018, CNX recorded $796,359 of goodwill and $128,781 of other intangible assets which are comprised of customer relationships. Impairment of Goodwill All goodwill is attributed to the Midstream reporting unit within the Shale segment. Goodwill is evaluated for impairment at least annually and whenever events or changes in circumstance indicate that the fair value of a reporting unit is less than its carrying amount. In connection with the evaluation of goodwill for impairment, CNX may first consider qualitative factors to assess whether there are indicators that it is more likely than not that the fair value of a reporting unit may not exceed its carrying amount. If after assessing such factors or circumstances, CNX determines it is more likely than not that the fair value of a reporting unit is greater than its carrying amount, then a quantitative assessment is not required. If CNX chooses to bypass the qualitative assessment, or if it chooses to perform a qualitative assessment but is unable to qualitatively conclude that no impairment has occurred, then CNX will perform a quantitative assessment. If the estimated fair value of a reporting unit is less than its carrying value, an impairment charge is recognized for the excess of the reporting unit's carrying value over its fair value. The Company uses a combination of the income approach (generally a discounted cash flow method) and market approach (which may include the guideline public company method and/or the guideline transaction method) to estimate the fair value of a reporting unit. During the first quarter of 2020, the Company identified indicators of impairment in the form of deteriorating macroeconomic conditions, and the decline in the observable market value of CNXM securities both in relation to the COVID-19 pandemic and the overall decline in the master limited partnership (MLP) market space. Management concluded that these factors presented indications that the fair value of the Midstream reporting unit was more likely than not below the reporting unit’s carrying value. CNX bypassed the qualitative assessment and performed a quantitative test that utilized a combination of the income and market approaches as described above to estimate the fair value of the Midstream reporting unit. As a result of this assessment, CNX concluded that the carrying value exceeded its estimated fair value, and a corresponding impairment of $473,045 was included in Impairment of Goodwill in the accompanying Consolidated Statements of Income. Any additional adverse changes in the future could reduce the underlying cash flows used to estimate fair values and could result in a decline in fair value that could trigger future impairment charges. In estimating the fair value of the Midstream reporting unit, the Company used the income approach’s discounted cash flow method, which applies significant inputs not observable in the public market (Level 3), including estimates and assumptions related to the use of an appropriate discount rate, future throughput volumes, operating costs and capital spending, discounted to present value using an industry rate adjusted for company-specific risk, which management feels reflects the overall level of inherent risk of the reporting unit. These assumptions are affected by expectations about future market, industry and economic conditions. Cash flow projections were derived from board approved budgeted amounts, a seven-year operating forecast and an estimate of future cash flows. Subsequent cash flows were developed using growth or contraction rates that management believes are reasonably likely to occur. The Company used the market approach’s comparable company method. The comparable company method evaluates the value of a company using metrics of other businesses of similar size and industry. The estimates of future cash flows utilized in the impairment analysis described above were subjective in nature and are subject to impacts from business risks as described in “Item 1A. Risk Factors” in CNX's 2020 Annual Report on Form 10-K as filed with the SEC on February 9, 2021 ("2020 Form 10-K"). The fair value estimation process requires considerable judgment and determining the fair value is sensitive to changes in assumptions impacting management’s estimates of future financial results. Although CNX believes the estimates and assumptions used in estimating the fair value are reasonable and appropriate, different assumptions and estimates could materially impact the estimated fair value. Future results could differ from our current estimates and assumptions. Changes in the carrying amount of goodwill consist of the following activity: For the Six Months Ended June 30, 2021 2020 Carrying Amount, Beginning of Period $ 323,314 $ 796,359 Impairment — 473,045 Carrying Amount, End of Period $ 323,314 $ 323,314 Other Intangible Assets The carrying amount and accumulated amortization of other intangible assets consist of the following: June 30, December 31, Other Intangible Assets: Gross Amortizable Asset - Customer Relationships $ 109,752 $ 109,752 Less: Accumulated Amortization - Customer Relationships 22,933 19,657 Total Other Intangible Assets, net $ 86,819 $ 90,095 The customer relationship intangible asset is being amortized on a straight-line basis over approximately 17 years. Amortization expense related to other intangible assets was $1,638 for the three months ended June 30, 2021 and 2020, and $3,276 for the six months ended June 30, 2021 and 2020. The estimated annual amortization expense is expected to approximate $6,552 per year for each of the next five years.

Revolving Credit Facilities

Revolving Credit Facilities	6 Months Ended
	Jun. 30, 2021
Short-term Debt, Other Disclosures [Abstract]
Revolving Credit Facilities	REVOLVING CREDIT FACILITIES: CNX CNX's senior secured revolving credit facility (the "CNX Credit Facility") matures in April 2024. Borrowings under the CNX Credit Facility are subject to borrowing base limitations based on the collateral value of CNX’s assets and are subject to regular semi-annual redeterminations. In November 2020, as part of the issuance of the $500,000 6.00% Senior Notes due January 2029 (See Note 9 - Long-Term Debt), both the lenders' commitments and borrowing base under the Credit Facility decreased to $1,775,000 from $1,900,000. In April 2021, as part of the semi-annual borrowing base redetermination, the lenders reaffirmed CNX's $1,775,000 borrowing base. Under the terms of the CNX Credit Facility, borrowings will bear interest at CNX's option at either: • the base rate, which is the highest of (i) the federal funds open rate plus 0.50%, (ii) PNC Bank, N.A.’s prime rate, or (iii) the one-month LIBOR rate plus 1.0%, in each case, plus a margin ranging from 0.75% to 1.75%; or • the LIBOR rate, which is the LIBOR rate plus a margin ranging from 1.75% to 2.75%. The CNX Credit Facility contains a number of affirmative and negative covenants including those that, except in certain circumstances, limit the Company and the subsidiary guarantors' ability to create, incur, assume or suffer to exist indebtedness, create or permit to exist liens on properties, dispose of assets, make investments, purchase or redeem CNX common stock, pay dividends, merge with another corporation or amend the senior unsecured notes. The Company must also mortgage 85% of the value of its proved reserves and 85% of the value of its proved developed producing reserves, in each case, which are included in the borrowing base, maintain applicable deposit, securities and commodities accounts with the lenders or affiliates thereof, and enter into control agreements with respect to such applicable accounts. The CNX Credit Facility contains customary events of default, including, but not limited to, a cross-default to certain other debt, breaches of representations and warranties, change of control events and breaches of covenants. The CNX Credit Facility also requires that CNX maintain a maximum net leverage ratio of no greater than 4.00 to 1.00, which is calculated as the ratio of debt less cash on hand to consolidated EBITDA, measured quarterly. CNX must also maintain a minimum current ratio of no less than 1.00 to 1.00, which is calculated as the ratio of current assets, plus revolver availability under the CNX Credit Facility, to current liabilities, excluding borrowings under the CNX Credit Facility, measured quarterly. The calculation of all of the ratios exclude CNXM. CNX was in compliance with all financial covenants as of June 30, 2021. At June 30, 2021, the CNX Credit Facility had $160,000 of borrowings outstanding and $188,567 of letters of credit outstanding, leaving $1,426,433 of unused capacity. At December 31, 2020, the CNX Credit Facility had $160,800 of borrowings outstanding and $185,272 of letters of credit outstanding, leaving $1,428,928 of unused capacity. CNX Midstream Partners LP (CNXM) CNXM's senior secured revolving credit facility (the "CNXM Credit Facility") matures in April 2024. The lenders’ commitments under the CNXM Credit Facility are $600,000, with an accordion feature that allows CNXM to increase the available borrowings by up to an additional $250,000 under certain terms and conditions. The CNXM Credit Facility includes the ability to issue letters of credit up to $100,000 in the aggregate. Under the terms of the CNXM Credit Facility, borrowings will bear interest at CNXM's option at either: • the base rate, which is the highest of (i) the federal funds open rate plus 0.50%, (ii) PNC Bank, N.A.’s prime rate, or (iii) the one-month LIBOR rate plus 1.0%, in each case, plus a margin ranging from 0.50% to 1.50%; or • the LIBOR rate, plus a margin ranging from 1.50% to 2.50%. Fees and interest rate spreads under the CNXM Credit Facility are based on the total leverage ratio, measured quarterly. The CNXM Credit Facility requires CNXM to comply with a number of affirmative and negative covenants. In addition, CNXM is obligated to maintain at the end of each fiscal quarter (w) for so long as at least $150,000 of the CNXM 6.50% Senior Notes due March 2026 (CNXM Senior Notes) are outstanding, a maximum total leverage ratio of no greater than 5.25 to 1.00 (which increases to no greater than 5.50 to 1.00 during qualifying acquisition periods); (x) if less than $150,000 of the CNXM Senior Notes are outstanding, a maximum total leverage ratio of no greater than 4.75 to 1.00 (which increases to no greater than 5.25 to 1.00 during qualifying acquisition periods); (y) a maximum secured leverage ratio of no greater than 3.50 to 1.00 and (z) a minimum interest coverage ratio of no less than 2.50 to 1.00. CNXM was in compliance with all financial covenants as of June 30, 2021. The CNXM Credit Facility also contains customary events of default, including, but not limited to, a cross-default to certain other debt, breaches of representations and warranties, change of control events and breaches of covenants. The obligations under the CNXM Credit Facility are secured by substantially all of the assets of CNXM and its wholly-owned subsidiaries. CNX is not a guarantor under the CNXM Credit Facility.

Other Accrued Liabilities

Other Accrued Liabilities	6 Months Ended
	Jun. 30, 2021
Payables and Accruals [Abstract]
Other Accrued Liabilities	OTHER ACCRUED LIABILITIES: June 30, December 31, Royalties $ 85,968 $ 72,401 Accrued Interest 41,310 26,549 Transportation Charges 17,648 15,969 Accrued Other Taxes 13,430 10,580 Deferred Revenue 10,980 10,986 Accrued Payroll & Benefits 7,070 5,009 Short-Term Incentive Compensation 5,323 20,340 Litigation Contingency 2,410 2,025 Purchased Gas Payable 428 1,528 Other 9,306 23,144 Current Portion of Long-Term Liabilities: Asset Retirement Obligations 8,455 8,455 Salary Retirement 1,817 1,787 Total Other Accrued Liabilities $ 204,145 $ 198,773

Long-Term Debt

Long-Term Debt	6 Months Ended
	Jun. 30, 2021
Long-term Debt, Other Disclosures [Abstract]
Long-term Debt	LONG-TERM DEBT: June 30, December 31, Senior Notes due March 2027 at 7.25% (Principal of $700,000 plus Unamortized Premium of $6,147 and $6,686, respectively) $ 706,147 $ 706,686 Senior Notes due January 2029 at 6.00%, Issued at Par Value 500,000 500,000 CNX Midstream Partners LP Senior Notes due March 2026 at 6.50% (Principal of $400,000 less Unamortized Discount of $3,500 and $3,875, respectively)* 396,500 396,125 Convertible Senior Notes due May 2026 at 2.25% (Principal of $345,000 less Unamortized Discount and Issuance Costs of $99,695 and $107,735, respectively) 245,305 237,265 CNX Midstream Partners LP Revolving Credit Facility* 160,000 291,000 CNX Revolving Credit Facility 160,000 160,800 Cardinal States Gathering Company Credit Facility maturing in March 2028 (Principal of $107,705 and $114,985, respectively, less Unamortized Discount of $1,048 and $1,126, respectively) 106,657 113,859 CSG Holdings II LLC Credit Facility maturing in March 2027 (Principal of $39,726 and $45,559, respectively, less Unamortized Discount of $408 and $441, respectively) 39,318 45,118 Less: Unamortized Debt Issuance Costs 24,859 26,852 2,289,068 2,424,001 Less: Amounts Due in One Year 23,098 22,574 Long-Term Debt $ 2,265,970 $ 2,401,427 *CNX is not a guarantor of CNXM's 6.50% Senior Notes due March 2026 or CNXM's Credit Facility. In April 2020, CNX issued $345,000 in aggregate principal amount of 2.25% convertible senior notes due May 2026 (the "Convertible Notes") in a private offering to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended, including $45,000 aggregate principal amount of Convertible Notes issued pursuant to the exercise in full of the initial purchasers’ option to purchase additional Convertible Notes. The Convertible Notes are senior, unsecured obligations of the Company. The Convertible Notes bear interest at a fixed rate of 2.25% per annum, payable semi-annually in arrears on May 1 and November 1 of each year, commencing on November 1, 2020. Proceeds from the issuance of the Convertible Notes totaled $334,650, net of initial purchaser discounts and issuance costs. The notes are guaranteed by most of CNX's subsidiaries but does not include CNXM (or its subsidiaries or general partner) or CSG Holdings III LLC. The initial conversion rate is 77.8816 shares of CNX's common stock per $1,000 principal amount of Convertible Notes, which represents an initial conversion price of approximately $12.84 per share, subject to adjustment upon the occurrence of specified events. Based on the closing stock price of CNX common stock of $13.66 on June 30, 2021, the if-converted value of the Convertible Notes exceeded the principal amount by $95,439. The Convertible Notes will mature on May 1, 2026, unless earlier repurchased, redeemed or converted. Before February 1, 2026, note holders will have the right to convert their Convertible Notes only upon the occurrence of the following events: • during any calendar quarter (and only during such calendar quarter) commencing after June 30, 2020, if the Last Reported Sale Price per share of Common Stock exceeds one hundred and thirty percent (130%) of the Conversion Price for each of at least twenty (20) Trading Days (whether or not consecutive) during the thirty (30) consecutive Trading Days ending on, and including, the last Trading Day of the immediately preceding calendar quarter. • during the five (5) consecutive Business Days immediately after any ten (10) consecutive trading day period (such ten (10) consecutive Trading Day period, the “Measurement Period”) if the trading Price per $1,000 principal amount of Notes, as determined following a request by a Holder in accordance with the procedures set forth below, for each trading day of the Measurement Period was less than ninety eight percent (98%) of the product of the last reported sale price per share of common stock on such trading day and the conversion rate on such trading day. • if CNX calls any or all of the Convertible Notes for redemption, at any time prior to the close of business on the scheduled trading day immediately preceding the redemption date; or • upon the occurrence of certain specified corporate events as set forth in the indenture governing the Convertible Notes. From and after February 1, 2026, note holders may convert their Convertible Notes at any time at their election until the close of business on the second scheduled trading day immediately before the maturity date. Upon conversion, the Company may satisfy its conversion obligation by paying and/or delivering, as the case may be, cash, shares of the Company’s common stock or a combination of cash and shares of the Company’s common stock, at the Company’s election, in the manner and subject to the terms and conditions provided in the indenture governing the Convertible Notes. The conversion rate is subject to adjustment under certain circumstances in accordance with the terms of the indenture governing the Convertible Notes. In addition, following certain corporate events, as described in the indenture governing the Convertible Notes, that occur prior to the maturity date, the Company will increase the conversion rate, in certain circumstances, for a holder who elects to convert its Convertible Notes in connection with such a corporate event. The Company will settle conversions by paying or delivering, as applicable, cash, shares of its common stock or a combination of cash and shares of its common stock, at the Company’s election. The Company’s current intent is to settle the principal amount of the Convertible Notes in cash upon conversion. If certain corporate events that constitute a “Fundamental Change” (as defined in the indenture governing the Convertible Notes) occur, then noteholders may require the Company to repurchase their Converitble Notes at a cash repurchase price equal to the principal amount of the Notes to be repurchased, plus accrued and unpaid interest, if any, to, but excluding, the fundamental change repurchase date. The definition of Fundamental Change includes certain business combination transactions involving the Company and certain de-listing events with respect to the Company’s common stock. During the three and six months ended June 30, 2021, the conditions allowing holders of the Convertible Notes to exercise their conversion right were not met and as of June 30, 2021, the Convertible Notes were not convertible. The Convertible Notes are therefore classified as long-term debt at June 30, 2021. In accounting for the transaction, the Convertible Notes were separated into liability and equity components. The carrying amount of the liability component was calculated by measuring the fair value of a similar debt instrument that does not have an associated conversion feature. The fair value was based on market data available for publicly traded, senior, unsecured corporate bonds with similar maturity, which represent Level 2 observable inputs. The carrying amount of the equity component, representing the conversion option, was determined by deducting the fair value of the liability component from the principal value of the Convertible Notes and was recorded in Capital in Excess of Par Value in the Consolidated Statement of Stockholders Equity and is not remeasured as long as it continues to meet the conditions for equity classification. The excess of the principal amount of the Convertible Notes over the liability component and the debt issuance costs are amortized to interest expense over the contractual term of the Convertible Notes using the effective interest method. In accounting for the debt issuance costs of $10,350 related to the Convertible Notes, the Company allocated the total amount incurred to the liability and equity components using the same proportions as the proceeds of the Convertible Notes. Issuance costs attributable to the liability component were $7,024 and will be amortized to interest expense using the effective interest method over the contractual term of the Convertible Notes. Issuance costs attributable to the equity component were $3,326 and were netted with the equity component in Capital in Excess of Par Value in the Consolidated Statement of Stockholders Equity and are not subject to amortization. The net carrying amount of the liability and equity components of the Convertible Notes was as follows: June 30, December 31, Liability Component: Principal $ 345,000 $ 345,000 Unamortized Discount (93,836) (101,367) Unamortized Issuance Costs (5,859) (6,368) Net Carrying Amount $ 245,305 $ 237,265 Equity Component, net of Purchase Discounts and Issuance Costs $ 78,284 $ 78,317 Interest expense related to the Convertible Notes is as follows: For the Three Months Ended June 30, For the Six Months Ended June 30, 2021 2020 2021 2020 Contractual Interest Expense $ 1,941 $ 1,294 $ 3,881 $ 1,294 Amortization of Debt Discount 3,809 2,325 7,531 2,325 Amortization of Issuance Costs 256 161 509 161 Total Interest Expense $ 6,006 $ 3,780 $ 11,921 $ 3,780 In connection with the offering of the Convertible Notes, the Company entered into privately negotiated capped call transactions with certain counterparties, (the “Capped Calls”). The Capped Calls each have an initial strike price of $12.84 per share, subject to certain adjustments, which correspond to the initial conversion price of the Convertible Notes. The Capped Calls have an initial cap price of $18.19 per share, subject to certain adjustments. The Capped Calls cover, subject to anti-dilution adjustments, the aggregate number of shares of the Company’s common stock that initially underlie the Convertible Notes, and are expected generally to reduce potential dilution to the Company’s common stock upon any conversion of Convertible Notes and/or offset any cash payments the Company is required to make in excess of the principal amount of converted Convertible Notes, as the case may be, with such reduction and/or offset subject to a cap, based on the cap price of the Capped Call Transactions. The conditions that cause adjustments to the initial strike price of the Capped Calls mirror the conditions that result in corresponding adjustments for the Convertible Notes. For accounting purposes, the Capped Calls are separate transactions, and not part of the terms of the Convertible Notes. As these transactions meet certain accounting criteria, the Capped Calls are recorded in stockholders’ equity and are not accounted for as derivatives. The cost of $35,673 incurred in connection with the Capped Calls was recorded as a reduction to Capital in Excess of Par Value. During the three and six months ended June 30, 2020, CNX purchased and retired $409,625 and $480,959, respectively, of its outstanding 5.875% Senior Notes due April 2022. As part of these transactions, a loss of $344 and a gain of $10,919 were included in Loss (Gain) on Debt Extinguishment in the Consolidated Statements of Income during the three and six months ended June 30, 2020, respectively. During the six months ended June 30, 2020, CNX's wholly-owned subsidiary Cardinal States Gathering Company LLC (Cardinal States) entered into a $125,000 non-revolving credit facility agreement (the "Cardinal States Facility"). The Cardinal States Facility matures in 2028, has an interest rate of 3-month LIBOR + 450 basis points and includes an excess cash flow sweep in an amount required to achieve a quarterly targeted debt balance. The facility is secured by substantially all of the Cardinal States assets, requires a minimum level of hedging of the variable interest rate exposure and is non-recourse to CNX. Additionally, during the six months ended June 30, 2020, CNX's wholly-owned subsidiary CSG Holdings II LLC (CSG Holdings) entered into a $50,000 non-revolving credit facility agreement (the "CSG Holdings Facility"). The CSG Holdings Facility matures in 2027, has interest rate of 3-month LIBOR + 675 basis points and includes a full excess cash sweep. The facility is secured by substantially all of the CSG Holding assets, requires a minimum level of hedging of the variable interest rate exposure and is non-recourse to CNX.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	6 Months Ended
	Jun. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	COMMITMENTS AND CONTINGENT LIABILITIES: CNX and its subsidiaries are subject to various lawsuits and claims with respect to such matters as personal injury, royalty accounting, damage to property, climate change, governmental regulations including environmental violations and remediation, employment and contract disputes and other claims and actions arising out of the normal course of business. CNX accrues the estimated loss for these lawsuits and claims when the loss is probable and can be estimated. The Company's current 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 CNX. It is possible that the aggregate loss in the future with respect to these lawsuits and claims could ultimately be material to the financial position, results of operations or cash flows of CNX; however, such amounts cannot be reasonably estimated. The 1992 Coal Industry Retiree Health Benefit Act (“Coal Act”), in Section 9711, requires coal companies that were providing health benefits to United Mine Workers of America (“UMWA”) retirees as of February 1993 to continue providing health benefits to such individuals, in substantially the same coverages, for as long as the last signatory operator remains in business. Section 9711 also requires any “related person” to be joint and severally liable for the provision of these health benefits. On May 1, 2020, the court in the Murray Energy Corporation (“Murray”) bankruptcy proceedings approved a settlement agreement between Murray and the UMWA that transferred to the UMWA 1992 Benefit Plan the Coal Act liabilities for retirees in Murray’s Section 9711 plan. The retirees transferred by Murray to the 1992 Benefit Plan include approximately 2,159 retirees allegedly traced to the December 2013 sale by CONSOL Energy Inc. to Murray Energy of the following possible last signatory operators: Consolidation Coal Company, McElroy Coal Company, Southern Ohio Coal Company, Central Ohio Coal Company, Keystone Coal Mining Corp., and Eight-Four Coal Mining Company (the “Sold Subsidiaries”). On May 2, 2020, the Trustees of the UMWA 1992 Benefit Plan sued CNX and CONSOL Energy Inc. (“CONSOL”) in federal court contending that the Sold Subsidiaries were last signatory operators and that CNX and CONSOL are related persons to the Sold Subsidiaries and, as such, CNX and CONSOL are jointly and severally liable for the Coal Act health benefits allegedly owed to the eligible retirees traced to the Sold Subsidiaries. The 1992 Plan seeks, among other relief, a declaration that CNX and CONSOL are obligated to enroll the eligible retirees attributed to the Sold Subsidiaries in a Section 9711 Plan; that CNX and CONSOL are liable to post the security required by Section 9712; and, that CNX and CONSOL are liable to pay per beneficiary premiums until the eligible retirees are enrolled in a Section 9711 plan, and other fees, costs and disbursements under the Coal Act. We disagree with the suit filed by the UMWA 1992 Plan, have filed a Motion to Dismiss and intend to defend this action. Further, under the Separation and Distribution Agreement that was entered into at the time we spun-out our coal business in 2017, CONSOL agreed to indemnify CNX for all coal-related liabilities, including this lawsuit. With respect to this matter, although a loss is possible, it is not probable, and accordingly no accrual has been recognized. On July 22, 2021, CNX received a letter from the UMWA 1974 Pension Plan requesting information related to the facts and circumstances surrounding the 2013 sale of certain of its coal subsidiaries to Murray Energy. The letter indicates that litigation related to potential withdrawal liabilities from the plan created by the 2019 bankruptcy of Murray Energy is reasonably foreseeable. At this time, no liability has been assessed. Under the Separation and Distribution Agreement that was entered into at the time we spun-out our coal business in 2017, CONSOL agreed to indemnify CNX for all coal-related liabilities including any potential withdrawal liabilities. At June 30, 2021, CNX has provided the following financial guarantees, unconditional purchase obligations, and letters of credit to certain third-parties as described by major category in the following tables. These amounts represent the maximum potential of total future payments that the Company could be required to make under these instruments. These amounts have not been reduced for potential recoveries under recourse or collateralization provisions. Generally, recoveries under reclamation bonds would be limited to the extent of the work performed at the time of the default. No amounts related to these unconditional purchase obligations and letters of credit are recorded as liabilities in the financial statements. CNX management believes that the commitments in the following table will expire without being funded, and therefore will not have a material adverse effect on CNX's financial condition. Amount of Commitment Expiration Per Period Total Less Than 1-3 Years 3-5 Years Beyond Letters of Credit: Firm Transportation $ 181,576 $ 181,576 $ — $ — $ — Other 7,021 7,021 — — — Total Letters of Credit 188,597 188,597 — — — Surety Bonds: Employee-Related 2,600 2,600 — — — Environmental 12,017 11,959 58 — — Financial Guarantees 81,670 81,670 — — — Other 9,183 7,686 1,497 — — Total Surety Bonds 105,470 103,915 1,555 — — Total Commitments $ 294,067 $ 292,512 $ 1,555 $ — $ — Excluded from the above table are commitments and guarantees entered into in conjunction with the spin-off of the Company's coal business in November 2017. Although CONSOL has agreed to indemnify CNX to the extent that CNX would be called upon to pay any of these liabilities, there is no assurance that CONSOL will satisfy its obligations to indemnify CNX in the event that CNX is so called upon (See “Item 1A. Risk Factors” in CNX's 2020 Form 10-K) and in our Quarterly Report on Form 10-Q for the quarter ended March 31, 2021 for additional information). CNX enters into long-term unconditional purchase obligations to procure major equipment purchases, natural gas firm transportation, gas drilling services and other operating goods and services. These purchase obligations are not recorded in the Consolidated Balance Sheets. As of June 30, 2021, the purchase obligations for each of the next five years and beyond are as follows: Obligations Due Amount Less than 1 year $ 266,355 1 - 3 years 439,639 3 - 5 years 403,228 More than 5 years 1,037,719 Total Purchase Obligations $ 2,146,941

Derivative Instruments

Derivative Instruments	6 Months Ended
	Jun. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	DERIVATIVE INSTRUMENTS: CNX enters into interest rate swap agreements to manage its exposure to interest rate volatility. These swaps change the variable-rate cash flow exposure on the debt obligations to fixed cash flows. The change in fair value of the interest rate swap agreements is accounted for on a mark-to-market basis with the changes in fair value recorded in current period earnings. In March 2020, CNX entered into interest rate swaps related to $175,000 of borrowings under the Cardinal States Facility and CSG Holdings Facility (See Note 9 - Long-Term Debt). In order to manage exposure to interest rate volatility, each respective entity entered into an interest rate swap for the full outstanding principal amounts inclusive of a put option at 25 basis points. The underlying notional for each swap and put option reduces over time based upon an expected amortization profile for each respective credit facility. In addition, CSG Holdings entered into a call option commencing March 31, 2023. In June 2019, CNX entered into an interest rate swap agreement related to $160,000 of borrowings under CNX’s Credit Facility (See Note 7 - Revolving Credit Facilities) which has the economic effect of modifying the variable-interest obligation into a fixed-interest obligation over a three-year period. In March 2020, this swap was terminated and replaced via a new interest rate swap, effective April 3, 2020, into a new four-year interest rate swap inclusive of a put option at zero basis points. Also executed in March 2020 was a new four-year $250,000 interest rate swap inclusive of a put option at zero basis points, effective April 3, 2020. Consistent with the previous interest rate swap agreement, the $250,000 interest rate swap was entered into to manage CNX's exposure to interest rate volatility. CNX enters into financial derivative instruments (over-the-counter swaps) to manage its exposure to natural gas price fluctuations. Typically, CNX “sells” swaps under which it receives a fixed price from counterparties and pays a floating market price. In order to enhance production flexibility, during the first quarter of 2021, CNX purchased, rather than sold, financial swaps for the period April through October 2021 under which CNX will pay a fixed price to and receive a floating price from its hedge counterparties. Swaps purchased have the effect of reducing total hedged volumes for the period of the swap. Natural gas commodity hedges are accounted for on a mark-to-market basis with changes in fair value recorded in current period earnings. CNX is exposed to credit risk in the event of non-performance by counterparties. The creditworthiness of counterparties is subject to continuing review. The Company has not experienced any issues of non-performance by derivative counterparties. None of the Company's counterparty master agreements currently require CNX to post collateral for any of its positions. However, as stated in the counterparty master agreements, if CNX's obligations with one of its counterparties cease to be secured on the same basis as similar obligations with the other lenders under the credit facility, CNX would have to post collateral for instruments in a liability position in excess of defined thresholds. All of the Company's derivative instruments are subject to master netting arrangements with our counterparties. CNX recognizes all financial derivative instruments as either assets or liabilities at fair value in the Consolidated Balance Sheets on a gross basis. Each of the Company's counterparty master agreements allows, in the event of default, the ability to elect early termination of outstanding contracts. If early termination is elected, CNX and the applicable counterparty would net settle all open hedge positions. The total notional amounts of CNX's derivative instruments were as follows: June 30, December 31, Forecasted to 2021 2020 Settle Through Natural Gas Commodity Swaps (Bcf) 1,623.0 1,256.9 2027 Natural Gas Basis Swaps (Bcf) 1,288.7 * 1,294.1 2027 Interest Rate Swaps $ 558,899 $ 569,972 2028 *Net of purchased natural gas basis swaps of 13.5 Bcf. The gross fair value of CNX's derivative instruments was as follows: June 30, December 31, 2021 2020 Current Assets: Commodity Derivative Instruments: Commodity Swaps $ 576 $ 53,668 Basis Only Swaps 106,921 30,848 Interest Rate Swaps 128 141 Total Current Assets $ 107,625 $ 84,657 Other Non-Current Assets: Commodity Derivative Instruments: Commodity Swaps $ 30,055 $ 134,661 Basis Only Swaps 173,957 52,903 Interest Rate Swaps 447 673 Total Other Non-Current Assets $ 204,459 $ 188,237 Current Liabilities: Commodity Derivative Instruments: Commodity Swaps $ 393,982 $ 23,506 Basis Only Swaps 18,103 14,491 Interest Rate Swaps 3,689 4,332 Total Current Liabilities $ 415,774 $ 42,329 Non-Current Liabilities: Commodity Derivative Instruments: Commodity Swaps $ 258,360 $ 59,388 Basis Only Swaps 21,007 57,150 Interest Rate Swaps 6,498 10,752 Total Non-Current Liabilities $ 285,865 $ 127,290 The effect of commodity derivative instruments on the Company's Consolidated Statements of Income was as follows: For the Three Months Ended For the Six Months Ended June 30, June 30, 2021 2020 2021 2020 Cash (Paid) Received in Settlement of Commodity Derivative Instruments: Natural Gas: Commodity Swaps $ (16,492) $ 153,149 $ (9,942) $ 310,728 Basis Swaps 6,133 (10,893) 1,988 (17,311) Total Cash (Paid) Received in Settlement of Commodity Derivative Instruments (10,359) 142,256 (7,954) 293,417 Unrealized (Loss) Gain on Commodity Derivative Instruments: Natural Gas: Commodity Swaps (629,688) (182,119) (727,147) (181,573) Basis Swaps 101,188 (23,440) 229,656 (60,005) Total Unrealized Loss on Commodity Derivative Instruments (528,500) (205,559) (497,491) (241,578) (Loss) Gain on Commodity Derivative Instruments: Natural Gas: Commodity Swaps (646,180) (28,970) (737,089) 129,155 Basis Swaps 107,321 (34,333) 231,644 (77,316) Total (Loss) Gain on Commodity Derivative Instruments $ (538,859) $ (63,303) $ (505,445) $ 51,839 The effect of interest rate swaps on Interest Expense in the Company's Consolidated Statements of Income was as follows: For the Three Months Ended For the Six Months Ended June 30, June 30, 2021 2020 2021 2020 Cash Paid in Settlement of Interest Rate Swaps $ (1,240) $ (536) $ (2,467) $ (592) Unrealized Gain (Loss) on Interest Rate Swaps 465 (3,598) 4,659 (14,237) (Loss) Gain on Interest Rate Swaps $ (775) $ (4,134) $ 2,192 $ (14,829) Cash Received in Settlement of Commodity Derivative Instruments for the three and six months ended June 30, 2020 included $29,015 related to the monetization and termination of approximately 39 million MMBtus of NYMEX natural gas hedges and a similar quantity of financial basis hedges that were to settle at various times from May through November of 2020. Net proceeds received from the monetization are classified as operating cash flows in the Consolidated Statements of Cash Flows. Cash Received in Settlement of Commodity Derivative Instruments for the six months ended June 30, 2020, in addition to the amount discussed above, also included $54,982 related to the monetization of certain NYMEX commodity swaps. The monetization resulted from reducing the contract swap prices of certain 2022, 2023 and 2024 NYMEX natural gas swap contracts. The notional quantities of the contracts were not changed by this monetization. Net proceeds received from the monetizations are classified as operating cash flows in the Consolidated Statements of Cash Flows. The Company also enters into fixed price natural gas sales agreements that are satisfied by physical delivery. These physical commodity contracts qualify for the normal purchases and normal sales exception and are not subject to derivative instrument accounting.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	6 Months Ended
	Jun. 30, 2021
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	FAIR VALUE OF FINANCIAL INSTRUMENTS: CNX 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 NYMEX forward curves, LIBOR-based discount rates and basis forward curves), while unobservable inputs reflect the Company's own assumptions of what market participants would use. The fair value hierarchy includes three levels of inputs that may be used to measure fair value as described below: Level 1 - Quoted prices for identical instruments in active markets. Level 2 - The fair value of the assets and liabilities included in Level 2 are based on standard industry income approach models that use significant observable inputs, including NYMEX forward curves, LIBOR-based discount rates and basis forward curves. Level 3 - Unobservable inputs significant to the fair value measurement supported by little or no market activity. In those cases when the inputs used to measure fair value meet the definition of more than one level of the fair value hierarchy, the lowest level input that is significant to the fair value measurement in its totality determines the applicable level in the fair value hierarchy. The financial instrument measured at fair value on a recurring basis is summarized below: Fair Value Measurements at June 30, 2021 Fair Value Measurements at December 31, 2020 Description Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Gas Derivatives $ — $ (379,943) $ — $ — $ 117,545 $ — Interest Rate Swaps $ — $ (9,612) $ — $ — $ (14,270) $ — The carrying amounts and fair values of financial instruments for which the fair value option was not elected are as follows: June 30, 2021 December 31, 2020 Carrying Fair Carrying Fair Cash and Cash Equivalents $ 39,365 $ 39,365 $ 15,617 $ 15,617 Long-Term Debt (Excluding Debt Issuance Costs) $ 2,313,927 $ 2,594,481 $ 2,450,853 $ 2,638,251 Cash and cash equivalents represent highly-liquid instruments and constitute Level 1 fair value measurements. Certain of the Company’s debt is actively traded on a public market and, as a result, constitute Level 1 fair value measurements. The portion of the Company’s debt obligations that is not actively traded is valued through reference to the applicable underlying benchmark rate and, as a result, constitute Level 2 fair value measurements.

Acquisitions and Dispositions

Acquisitions and Dispositions	6 Months Ended
	Jun. 30, 2021
Business Combinations [Abstract]
Acquisitions And Dispositions	ACQUISITIONS AND DISPOSITIONS: On July 26, 2020, CNX entered into an Agreement and Plan of Merger (the “Merger Agreement”) with CNXM, CNX Midstream GP LLC (the “General Partner”) and CNX Resources Holding LLC., a wholly owned subsidiary of CNX (“Merger Sub”), pursuant to which Merger Sub merged with and into CNXM with CNXM surviving as an indirect wholly owned subsidiary of CNX (the “Merger”). As a result of the Merger, CNXM’s common units are no longer publicly traded. Except for the Class B units of CNXM, which were automatically canceled immediately prior to the effective time of the Merger for no consideration in accordance with CNXM’s partnership agreement, the interests in CNXM owned by CNX and its subsidiaries remain outstanding as limited partner interests in the surviving entity. The General Partner will continue to own the non-economic general partner interest in the surviving entity. Because CNX controlled CNXM prior to the Merger and continues to control CNXM after the Merger, CNX accounted for the change in its ownership interest in CNXM 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 gain or loss was recognized in its condensed consolidated statements of operations as a result of the Merger. The tax effects of the Merger were reported as adjustments to deferred income taxes and capital in excess of par value. Prior to the effective time of the Merger on September 28, 2020, public unitholders held a 46.9% equity interest in CNXM and CNX owned the remaining 53.1% equity interest. The earnings of CNXM that were attributed to its common units held by the public prior to the Merger are reflected in Net Income Attributable to Noncontrolling Interest in the Consolidated Statements of Income. There were no changes in CNX's ownership interest in CNXM during the three or six months ended June 30, 2021 or 2020. CNXM’s revolving credit facility (See Note 7 - Revolving Credit Facilities) and the CNXM Senior Notes (See Note 9 - Long-Term Debt) were not impacted by the Merger.

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 2021
Segment Reporting [Abstract]
Segment Information	SEGMENT INFORMATION: The Company reports segment information based on the “management” approach. The management approach designates the internal reporting used by management for making decisions and assessing performance as the source of the Company’s reportable segments. The Company evaluates the performance of its reportable segments based on total revenue and other operating income, and operating expenses directly attributable to that segment. Certain expenses are managed outside the reportable segments and therefore are not allocated. These expenses include, but are not limited to, interest expense, impairment of exploration and production properties, impairment of goodwill and other corporate expenses such as selling, general and administrative costs. CNX's principal activity is to produce pipeline quality natural gas for sale primarily to gas wholesalers and the Company has two reportable segments that conducts those operations: Shale and Coalbed Methane. The Other Segment includes nominal shallow oil and gas production which is not significant to the Company. It also includes the Company's purchased gas activities, unrealized gain or loss on commodity derivative instruments, realized gain on commodity derivative instruments that were monetized prior to their settlement dates, exploration and production related other costs, impairments of exploration and production properties, as well as various other expenses that are managed outside the reportable segments as discussed above. Operating profit for each segment is based on sales less identifiable operating and non-operating expenses. Prior to the Merger of CNXM that occurred in September 2020 (See Note 13 - Acquisitions and Dispositions), CNX consisted of two principal business divisions: Exploration and Production (E&P) and Midstream. The E&P Division included four reportable segments, Marcellus Shale, Utica Shale, Coalbed Methane and Other Gas. Certain reclassifications of 2020 segment information have been made to conform to the new presentation. Industry segment results for the three months ended June 30, 2021 are: Shale Coalbed Methane Other Consolidated Natural Gas, NGL and Oil Revenue $ 332,659 $ 36,505 $ 285 $ 369,449 (A) Purchased Gas Revenue — — 16,706 16,706 Loss on Commodity Derivative Instruments (9,394) (962) (528,503) (538,859) Other Revenue and Operating Income 18,679 — 6,815 25,494 (B) Total Revenue and Other Operating Income (Loss) $ 341,944 $ 35,543 $ (504,697) $ (127,210) Total Operating Expense $ 191,996 $ 28,204 $ 60,511 $ 280,711 Earnings (Loss) Before Income Tax $ 149,948 $ 7,339 $ (603,463) $ (446,176) Segment Assets $ 6,095,486 $ 1,069,470 $ 907,154 $ 8,072,110 (C) Depreciation, Depletion and Amortization $ 104,380 $ 14,264 $ 3,963 $ 122,607 Capital Expenditures $ 127,230 $ 1,502 $ 226 $ 128,958 (A) Included in Total Natural Gas, NGL and Oil Revenue are sales of $60,162 to Citadel Energy Marketing LLC, which comprises over 10% of revenue from contracts with external customers for the period. (B) Includes midstream revenue of $18,679 and equity in earnings of unconsolidated affiliates of $1,553 for Shale and Other, respectively. (C) Includes investments in unconsolidated equity affiliates of $16,726. Industry segment results for the three months ended June 30, 2020 are: Shale Coalbed Methane Other Consolidated Natural Gas, NGL and Oil Revenue $ 152,627 $ 22,929 $ 220 $ 175,776 (D) Purchased Gas Revenue — — 20,424 20,424 Gain (Loss) on Commodity Derivative Instruments 100,262 13,005 (176,570) (63,303) (E) Other Revenue and Operating Income 12,191 — 3,753 15,944 (F) Total Revenue and Other Operating Income (Loss) $ 265,080 $ 35,934 $ (152,173) $ 148,841 Total Operating Expense $ 154,306 $ 29,324 $ 78,882 $ 262,512 Earnings (Loss) Before Income Tax $ 110,774 $ 6,610 $ (276,516) $ (159,132) Segment Assets $ 6,096,101 $ 1,132,217 $ 1,091,366 $ 8,319,684 (G) Depreciation, Depletion and Amortization $ 93,984 $ 15,701 $ 3,860 $ 113,545 Capital Expenditures $ 131,974 $ 2,034 $ 844 $ 134,852 (D) Included in Total Natural Gas, NGL and Oil Revenue are sales of $33,711 to Direct Energy Business Marketing LLC, which comprises over 10% of revenue from contracts with external customers for the period. (E) Included in Other is a realized gain on commodity derivative instruments of $29,015 related to the monetization of hedges (see Note 11 - Derivative Instruments for more information). (F) Includes midstream revenue of $12,191 and equity in losses of unconsolidated affiliates of $1,259 for Shale and Other, respectively. (G) Includes investments in unconsolidated equity affiliates of $15,159. Industry segment results for the six months ended June 30, 2021 are: Shale Coalbed Methane Other Consolidated Natural Gas, NGL and Oil Revenue $ 674,828 $ 75,409 $ 437 $ 750,674 (A) Purchased Gas Revenue — — 50,190 50,190 Loss on Commodity Derivative Instruments (7,212) (740) (497,493) (505,445) Other Revenue and Operating Income 37,745 — 12,700 50,445 (B) Total Revenue and Other Operating Income (Loss) $ 705,361 $ 74,669 $ (434,166) $ 345,864 Total Operating Expense $ 380,707 $ 56,759 $ 143,050 $ 580,516 Earnings (Loss) Before Income Tax $ 324,654 $ 17,910 $ (653,335) $ (310,771) Segment Assets $ 6,095,486 $ 1,069,470 $ 907,154 $ 8,072,110 (C) Depreciation, Depletion and Amortization $ 213,886 $ 29,747 $ 7,918 $ 251,551 Capital Expenditures $ 248,348 $ 3,644 $ 395 $ 252,387 (A) Included in Total Natural Gas, NGL and Oil Revenue are sales of $100,465 to Citadel Energy Marketing LLC and $80,189 to Direct Energy Business Marketing LLC, each of which comprises over 10% of revenue from contracts with external customers for the period. (B) Includes midstream revenue of $37,745 and equity in earnings of unconsolidated affiliates of $2,504 for Shale and Other, respectively. (C) Includes investments in unconsolidated equity affiliates of $16,726. Industry segment results for the six months ended June 30, 2020 are: Shale Coalbed Methane Other Consolidated Natural Gas, NGL and Oil Revenue $ 373,121 $ 53,652 $ 497 $ 427,270 (D) Purchased Gas Revenue — — 46,783 46,783 Gain (Loss) on Commodity Derivative Instruments 186,714 22,692 (157,567) 51,839 (E) Other Revenue and Operating Income 30,597 — 8,711 39,308 (F) Total Revenue and Other Operating Income (Loss) $ 590,432 $ 76,344 $ (101,576) $ 565,200 Total Operating Expense $ 346,254 $ 63,484 $ 696,073 $ 1,105,811 Earnings (Loss) Before Income Tax $ 244,178 $ 12,860 $ (873,975) $ (616,937) Segment Assets $ 6,096,101 $ 1,132,217 $ 1,091,366 $ 8,319,684 (G) Depreciation, Depletion and Amortization $ 201,030 $ 34,139 $ 7,540 $ 242,709 Capital Expenditures $ 279,814 $ 4,486 $ 2,601 $ 286,901 (D) Included in Total Natural Gas, NGL and Oil Revenue are sales of $79,367 to Direct Energy Business Marketing LLC, which comprises over 10% of revenue from contracts with external customers for the period. (E) Included in Other is a realized gain on commodity derivative instruments of $83,997 related to the monetization of hedges (see Note 11 - Derivative Instruments for more information). (F) Includes midstream revenue of $30,597 and equity in losses of unconsolidated affiliates of $1,421 for Shale and Other, respectively. (G) Includes investments in unconsolidated equity affiliates of $15,159. Reconciliation of Segment Information to Consolidated Amounts: Revenue and Other Operating (Loss) Income For the Three Months Ended June 30, For the Six Months Ended June 30, 2021 2020 2021 2020 Total Segment Revenue from Contracts with External Customers $ 404,834 $ 208,391 $ 838,609 $ 504,650 (Loss) Gain on Commodity Derivative Instruments (538,859) (63,303) (505,445) 51,839 Other Operating Income 6,815 3,753 12,700 8,711 Total Consolidated Revenue and Other Operating (Loss) Income $ (127,210) $ 148,841 $ 345,864 $ 565,200

Stock Repurchase

Stock Repurchase	6 Months Ended
	Jun. 30, 2021
Equity [Abstract]
Stock Repurchase	STOCK REPURCHASE:On January 26, 2021, the Company’s Board of Directors approved an increase in the aggregate amount of the previous $750,000 stock repurchase program plan to $900,000. As of June 30, 2021, the amount available under the stock repurchase program is $214,686, and is not subject to an expiration date. The repurchases may be affected from time-to-time through open market purchases, privately negotiated transactions, Rule 10b5-1 plans, accelerated stock repurchases, block trades, derivative contracts or otherwise in compliance with Rule 10b-18. The timing of any repurchases will be based on a number of factors, including available liquidity, the Company's stock price, the Company's financial outlook, and alternative investment options. The stock repurchase program does not obligate the Company to repurchase any dollar amount or number of shares and the Board may modify, suspend, or discontinue its authorization of the program at any time. The Board of Directors will continue to evaluate the size of the stock repurchase program based on CNX's free cash flow position, leverage ratio, and capital plans. During the six months ended June 30, 2021, 3,095,241 shares were repurchased and retired at an average price of $13.12 per share for a total cost of $40,678. There were no shares repurchased and retired during the six months ended June 30, 2020.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	6 Months Ended
	Jun. 30, 2021
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Pronouncements	RECENT ACCOUNTING PRONOUNCEMENTS:In May 2021, the FASB issued Accounting Standards Update (ASU) 2021-04 - Issuer's Accounting for Certain Modifications or Exchanges of Freestanding Equity-Classified Written Call Options. This ASU provides guidance on how an issuer would measure and recognize the effect of these transactions. Specifically, it provides a principles-based framework to determine whether an issuer should recognize the modification or exchange as an adjustment to equity or an expense. The amendments in this ASU are effective for all entities for fiscal years beginning after December 15, 2021, including interim periods within those fiscal years. An entity should apply the amendments prospectively to modifications or exchanges occurring on or after the effective date of the amendments. Early adoption is permitted. The Company is still evaluating the effect of adopting this guidance. In August 2020, the FASB issued ASU 2020-06 - Accounting for Convertible Instruments and Contracts in an Entity's Own Equity. This ASU simplifies an entity's accounting for convertible instruments by eliminating two of the three models in ASC 470-20 that require separate accounting for embedded conversion features, simplifies the settlement assessment that entities are required to perform to determine whether a contract qualifies for equity classification, requires entities to use the if-converted method for all convertible instruments in the diluted EPS calculation and include the effect of potential share settlement (if the effect is more dilutive) for instruments that may be settled in cash or shares, except for certain liability-classified share-based payment awards, requires new disclosures about events that occur during the reporting period and cause conversion contingencies to be met and about the fair value of an entity's convertible debt at the instrument level, among other things. The amendments in this ASU are effective for public entities for fiscal years beginning after December 15, 2021, including interim periods within those fiscal years, and can be adopted through either a modified retrospective method of transition or a fully retrospective method of transition. Early adoption is permitted, but no earlier than fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. The Company is still evaluating the effect of adopting this guidance. In March 2020, the FASB issued ASU 2020-04 - Reference Rate Reform - Facilitation of the Effects of Reference Rate Reform on Financial Reporting (Topic 848). This ASU provides optional expedient and exceptions for applying generally accepted accounting principles to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. In response to the concerns about structural risks of interbank offered rates (IBORs) and, particularly, the risk of cessation of the London Interbank Offered Rate (LIBOR), regulators in several jurisdictions around the world have undertaken reference rate reform initiatives to identify alternative reference rates that are more observable or transaction based and less susceptible to manipulation. The ASU provides companies with optional guidance to ease the potential accounting burden associated with transitioning away from reference rates that are expected to be discontinued. In January 2021, the FASB issued ASU 2021-01, which clarifies that certain provisions in Topic 848, if elected by an entity, apply to derivative instruments that use an interest rate for margining, discounting, or contract price alignment that is modified as a result of reference rate reform. The amendments in these ASUs are effective for all entities as of March 12, 2020 through December 31, 2022. The Company is still evaluating the effect of adopting this guidance.

Basis of Presentation (Policies

Basis of Presentation (Policies)	6 Months Ended
	Jun. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	The accompanying Unaudited Consolidated Financial Statements have been prepared in accordance with generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Operating results for the three and six months ended June 30, 2021 are not necessarily indicative of the results that may be expected for future periods. The Consolidated Balance Sheet at December 31, 2020 has been derived from the Audited Consolidated Financial Statements at that date but does not include all the notes required by generally accepted accounting principles for complete financial statements. For further information, refer to the Consolidated Financial Statements and related notes for the year ended December 31, 2020 included in CNX Resources Corporation's ("CNX," "CNX Resources," the "Company," "we," "us," or "our") Annual Report on Form 10-K as filed with the Securities and Exchange Commission (SEC) on February 9, 2021.
Reclassification	Certain amounts in prior periods have been reclassified to conform to the current period presentation.
Restricted Cash	Restricted Cash Restricted cash consists of cash that the Company is contractually obligated to maintain in accordance with the terms of the Cardinal States Gathering LLC and CSG Holdings II LLC Credit Agreement, each dated March 13, 2020 (See Note 9 - Long-Term Debt for more information).
Receivables	Receivables As of June 30, 2021 and December 31, 2020, Accounts Receivable - Trade were $157,667 and $145,929, respectively, and Other Receivables were $10,727 and $4,238, respectively. The measurement of expected credit losses is based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. Management records an allowance for credit losses related to the collectability of third-party customers' receivables using the historical aging of the customer receivable balance. The collectability is determined based on past events, including historical experience, customer credit rating, as well as current market conditions. CNX monitors customer ratings and collectability on an on-going basis. Account balances will be charged off against the allowance after all means of collection have been exhausted and the potential for recovery is considered remote.

Basis of Presentation (Tables)

Basis of Presentation (Tables)	6 Months Ended
	Jun. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Cash and Cash Equivalents	The following table provides a reconciliation of cash, cash equivalents, and restricted cash to amounts shown in the statement of cash flows: June 30, 2021 2020 Cash and Cash Equivalents $ 39,365 $ 19,607 Restricted Cash, Current Portion 768 738 Restricted Cash, Less Current Portion 4,751 5,576 Total Cash, Cash Equivalents, and Restricted Cash $ 44,884 $ 25,921
Restrictions on Cash and Cash Equivalents	The following table provides a reconciliation of cash, cash equivalents, and restricted cash to amounts shown in the statement of cash flows: June 30, 2021 2020 Cash and Cash Equivalents $ 39,365 $ 19,607 Restricted Cash, Current Portion 768 738 Restricted Cash, Less Current Portion 4,751 5,576 Total Cash, Cash Equivalents, and Restricted Cash $ 44,884 $ 25,921
Schedule of Allowance for Credit Loss	The following represents the roll forward of the allowance for credit losses for the six months ended: June 30, 2021 2020 Allowance for Credit Losses - Trade, Beginning of Year $ 84 $ — Provision for Expected Credit Losses — 78 Allowance for Credit Losses - Trade, End of Period $ 84 $ 78 Allowance for Credit Losses - Other Receivables, Beginning of Year $ 3,248 $ 2,463 Provision for Expected Credit Losses (55) 2,736 Write-off of Uncollectible Accounts (15) (69) Allowance for Credit Losses - Other Receivables, End of Period $ 3,178 $ 5,130

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	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 antidilutive: For the Three Months Ended June 30, For the Six Months Ended June 30, 2021 2020 2021 2020 Anti-Dilutive Options 3,029,168 4,256,409 3,029,168 4,256,409 Anti-Dilutive Restricted Stock Units 2,484,443 2,009,678 2,484,443 2,009,678 Anti-Dilutive Performance Share Units 1,011,443 651,131 1,011,443 651,131 6,525,054 6,917,218 6,525,054 6,917,218
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity	The table below sets forth the share-based awards that have been exercised or released: For the Three Months Ended June 30, For the Six Months Ended June 30, 2021 2020 2021 2020 Options 205 239,839 656,573 239,839 Restricted Stock Units 34,056 163,157 735,813 504,040 Performance Share Units — — 291,653 274,716 34,261 402,996 1,684,039 1,018,595
Schedule of Earnings Per Share, Basic and Diluted	The computations for basic and diluted loss per share are as follows: For the Three Months Ended June 30, For the Six Months Ended June 30, 2021 2020 2021 2020 Net Loss $ (354,059) $ (130,486) $ (256,034) $ (435,709) Less: Net Income Attributable to Noncontrolling Interest — 15,263 — 39,126 Net Loss Attributable to CNX Resources Shareholders $ (354,059) $ (145,749) $ (256,034) $ (474,835) Weighted-Average Shares of Common Stock Outstanding 219,897,242 187,316,463 219,910,365 187,117,412 Effect of Diluted Shares* — — — — Weighted-Average Diluted Shares of Common Stock Outstanding 219,897,242 187,316,463 219,910,365 187,117,412 Loss per Share: Basic $ (1.61) $ (0.78) $ (1.16) $ (2.54) Diluted $ (1.61) $ (0.78) $ (1.16) $ (2.54)

Revenue From Contracts With C_2

Revenue From Contracts With Customers (Tables)	6 Months Ended
	Jun. 30, 2021
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following table is a disaggregation of revenue by major source: For the Three Months Ended June 30, For the Six Months Ended June 30, 2021 2020 2021 2020 Revenue from Contracts with Customers: Natural Gas Revenue $ 320,982 $ 168,510 $ 668,358 $ 398,108 NGL Revenue 41,521 6,226 73,384 25,638 Oil/Condensate Revenue 6,946 1,040 8,932 3,524 Total Natural Gas, NGL and Oil Revenue 369,449 175,776 750,674 427,270 Purchased Gas Revenue 16,706 20,424 50,190 46,783 Other Sources of Revenue and Other Operating (Loss) Income: (Loss) Gain on Commodity Derivative Instruments (538,859) (63,303) (505,445) 51,839 Other Revenue and Operating Income 25,494 15,944 50,445 39,308 Total Revenue and Other Operating (Loss) Income $ (127,210) $ 148,841 $ 345,864 $ 565,200

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	6 Months Ended
	Jun. 30, 2021
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	June 30, December 31, Intangible Drilling Cost $ 5,127,989 $ 4,965,252 Gas Gathering Equipment 2,459,197 2,510,917 Proved Gas Properties 1,271,774 1,253,094 Gas Wells and Related Equipment 1,164,025 1,120,061 Unproved Gas Properties 718,042 725,705 Surface Land and Other Equipment 197,956 199,322 Other 189,513 189,645 Total Property, Plant and Equipment 11,128,496 10,963,996 Less: Accumulated Depreciation, Depletion and Amortization 4,119,856 3,938,451 Total Property, Plant and Equipment - Net $ 7,008,640 $ 7,025,545

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	Changes in the carrying amount of goodwill consist of the following activity: For the Six Months Ended June 30, 2021 2020 Carrying Amount, Beginning of Period $ 323,314 $ 796,359 Impairment — 473,045 Carrying Amount, End of Period $ 323,314 $ 323,314
Schedule of Finite-Lived Intangible Assets	The carrying amount and accumulated amortization of other intangible assets consist of the following: June 30, December 31, Other Intangible Assets: Gross Amortizable Asset - Customer Relationships $ 109,752 $ 109,752 Less: Accumulated Amortization - Customer Relationships 22,933 19,657 Total Other Intangible Assets, net $ 86,819 $ 90,095

Other Accrued Liabilities (Tabl

Other Accrued Liabilities (Tables)	6 Months Ended
	Jun. 30, 2021
Payables and Accruals [Abstract]
Schedule of Other Accrued Liabilities	June 30, December 31, Royalties $ 85,968 $ 72,401 Accrued Interest 41,310 26,549 Transportation Charges 17,648 15,969 Accrued Other Taxes 13,430 10,580 Deferred Revenue 10,980 10,986 Accrued Payroll & Benefits 7,070 5,009 Short-Term Incentive Compensation 5,323 20,340 Litigation Contingency 2,410 2,025 Purchased Gas Payable 428 1,528 Other 9,306 23,144 Current Portion of Long-Term Liabilities: Asset Retirement Obligations 8,455 8,455 Salary Retirement 1,817 1,787 Total Other Accrued Liabilities $ 204,145 $ 198,773

Long-Term Debt (Tables)

Long-Term Debt (Tables)	6 Months Ended
	Jun. 30, 2021
Long-term Debt, Other Disclosures [Abstract]
Schedule of Long-term Debt	June 30, December 31, Senior Notes due March 2027 at 7.25% (Principal of $700,000 plus Unamortized Premium of $6,147 and $6,686, respectively) $ 706,147 $ 706,686 Senior Notes due January 2029 at 6.00%, Issued at Par Value 500,000 500,000 CNX Midstream Partners LP Senior Notes due March 2026 at 6.50% (Principal of $400,000 less Unamortized Discount of $3,500 and $3,875, respectively)* 396,500 396,125 Convertible Senior Notes due May 2026 at 2.25% (Principal of $345,000 less Unamortized Discount and Issuance Costs of $99,695 and $107,735, respectively) 245,305 237,265 CNX Midstream Partners LP Revolving Credit Facility* 160,000 291,000 CNX Revolving Credit Facility 160,000 160,800 Cardinal States Gathering Company Credit Facility maturing in March 2028 (Principal of $107,705 and $114,985, respectively, less Unamortized Discount of $1,048 and $1,126, respectively) 106,657 113,859 CSG Holdings II LLC Credit Facility maturing in March 2027 (Principal of $39,726 and $45,559, respectively, less Unamortized Discount of $408 and $441, respectively) 39,318 45,118 Less: Unamortized Debt Issuance Costs 24,859 26,852 2,289,068 2,424,001 Less: Amounts Due in One Year 23,098 22,574 Long-Term Debt $ 2,265,970 $ 2,401,427
Convertible Debt	The net carrying amount of the liability and equity components of the Convertible Notes was as follows: June 30, December 31, Liability Component: Principal $ 345,000 $ 345,000 Unamortized Discount (93,836) (101,367) Unamortized Issuance Costs (5,859) (6,368) Net Carrying Amount $ 245,305 $ 237,265 Equity Component, net of Purchase Discounts and Issuance Costs $ 78,284 $ 78,317 Interest expense related to the Convertible Notes is as follows: For the Three Months Ended June 30, For the Six Months Ended June 30, 2021 2020 2021 2020 Contractual Interest Expense $ 1,941 $ 1,294 $ 3,881 $ 1,294 Amortization of Debt Discount 3,809 2,325 7,531 2,325 Amortization of Issuance Costs 256 161 509 161 Total Interest Expense $ 6,006 $ 3,780 $ 11,921 $ 3,780

Commitments and Contingent Li_2

Commitments and Contingent Liabilities (Tables)	6 Months Ended
	Jun. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Long-term Purchase Commitment	At June 30, 2021, CNX has provided the following financial guarantees, unconditional purchase obligations, and letters of credit to certain third-parties as described by major category in the following tables. These amounts represent the maximum potential of total future payments that the Company could be required to make under these instruments. These amounts have not been reduced for potential recoveries under recourse or collateralization provisions. Generally, recoveries under reclamation bonds would be limited to the extent of the work performed at the time of the default. No amounts related to these unconditional purchase obligations and letters of credit are recorded as liabilities in the financial statements. CNX management believes that the commitments in the following table will expire without being funded, and therefore will not have a material adverse effect on CNX's financial condition. Amount of Commitment Expiration Per Period Total Less Than 1-3 Years 3-5 Years Beyond Letters of Credit: Firm Transportation $ 181,576 $ 181,576 $ — $ — $ — Other 7,021 7,021 — — — Total Letters of Credit 188,597 188,597 — — — Surety Bonds: Employee-Related 2,600 2,600 — — — Environmental 12,017 11,959 58 — — Financial Guarantees 81,670 81,670 — — — Other 9,183 7,686 1,497 — — Total Surety Bonds 105,470 103,915 1,555 — — Total Commitments $ 294,067 $ 292,512 $ 1,555 $ — $ —
Unrecorded Unconditional Purchase Obligations Disclosure	As of June 30, 2021, the purchase obligations for each of the next five years and beyond are as follows: Obligations Due Amount Less than 1 year $ 266,355 1 - 3 years 439,639 3 - 5 years 403,228 More than 5 years 1,037,719 Total Purchase Obligations $ 2,146,941

Derivative Instruments (Tables)

Derivative Instruments (Tables)	6 Months Ended
	Jun. 30, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Notional Amounts of Derivative Instruments	The total notional amounts of CNX's derivative instruments were as follows: June 30, December 31, Forecasted to 2021 2020 Settle Through Natural Gas Commodity Swaps (Bcf) 1,623.0 1,256.9 2027 Natural Gas Basis Swaps (Bcf) 1,288.7 * 1,294.1 2027 Interest Rate Swaps $ 558,899 $ 569,972 2028 *Net of purchased natural gas basis swaps of 13.5 Bcf.
Schedule of Derivative Assets at Fair Value	The gross fair value of CNX's derivative instruments was as follows: June 30, December 31, 2021 2020 Current Assets: Commodity Derivative Instruments: Commodity Swaps $ 576 $ 53,668 Basis Only Swaps 106,921 30,848 Interest Rate Swaps 128 141 Total Current Assets $ 107,625 $ 84,657 Other Non-Current Assets: Commodity Derivative Instruments: Commodity Swaps $ 30,055 $ 134,661 Basis Only Swaps 173,957 52,903 Interest Rate Swaps 447 673 Total Other Non-Current Assets $ 204,459 $ 188,237 Current Liabilities: Commodity Derivative Instruments: Commodity Swaps $ 393,982 $ 23,506 Basis Only Swaps 18,103 14,491 Interest Rate Swaps 3,689 4,332 Total Current Liabilities $ 415,774 $ 42,329 Non-Current Liabilities: Commodity Derivative Instruments: Commodity Swaps $ 258,360 $ 59,388 Basis Only Swaps 21,007 57,150 Interest Rate Swaps 6,498 10,752 Total Non-Current Liabilities $ 285,865 $ 127,290
Schedule of Derivative Liabilities at Fair Value	The gross fair value of CNX's derivative instruments was as follows: June 30, December 31, 2021 2020 Current Assets: Commodity Derivative Instruments: Commodity Swaps $ 576 $ 53,668 Basis Only Swaps 106,921 30,848 Interest Rate Swaps 128 141 Total Current Assets $ 107,625 $ 84,657 Other Non-Current Assets: Commodity Derivative Instruments: Commodity Swaps $ 30,055 $ 134,661 Basis Only Swaps 173,957 52,903 Interest Rate Swaps 447 673 Total Other Non-Current Assets $ 204,459 $ 188,237 Current Liabilities: Commodity Derivative Instruments: Commodity Swaps $ 393,982 $ 23,506 Basis Only Swaps 18,103 14,491 Interest Rate Swaps 3,689 4,332 Total Current Liabilities $ 415,774 $ 42,329 Non-Current Liabilities: Commodity Derivative Instruments: Commodity Swaps $ 258,360 $ 59,388 Basis Only Swaps 21,007 57,150 Interest Rate Swaps 6,498 10,752 Total Non-Current Liabilities $ 285,865 $ 127,290
Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position	The effect of commodity derivative instruments on the Company's Consolidated Statements of Income was as follows: For the Three Months Ended For the Six Months Ended June 30, June 30, 2021 2020 2021 2020 Cash (Paid) Received in Settlement of Commodity Derivative Instruments: Natural Gas: Commodity Swaps $ (16,492) $ 153,149 $ (9,942) $ 310,728 Basis Swaps 6,133 (10,893) 1,988 (17,311) Total Cash (Paid) Received in Settlement of Commodity Derivative Instruments (10,359) 142,256 (7,954) 293,417 Unrealized (Loss) Gain on Commodity Derivative Instruments: Natural Gas: Commodity Swaps (629,688) (182,119) (727,147) (181,573) Basis Swaps 101,188 (23,440) 229,656 (60,005) Total Unrealized Loss on Commodity Derivative Instruments (528,500) (205,559) (497,491) (241,578) (Loss) Gain on Commodity Derivative Instruments: Natural Gas: Commodity Swaps (646,180) (28,970) (737,089) 129,155 Basis Swaps 107,321 (34,333) 231,644 (77,316) Total (Loss) Gain on Commodity Derivative Instruments $ (538,859) $ (63,303) $ (505,445) $ 51,839 The effect of interest rate swaps on Interest Expense in the Company's Consolidated Statements of Income was as follows: For the Three Months Ended For the Six Months Ended June 30, June 30, 2021 2020 2021 2020 Cash Paid in Settlement of Interest Rate Swaps $ (1,240) $ (536) $ (2,467) $ (592) Unrealized Gain (Loss) on Interest Rate Swaps 465 (3,598) 4,659 (14,237) (Loss) Gain on Interest Rate Swaps $ (775) $ (4,134) $ 2,192 $ (14,829)

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	6 Months Ended
	Jun. 30, 2021
Fair Value Disclosures [Abstract]
Fair Value, Assets Measured on Recurring Basis	The financial instrument measured at fair value on a recurring basis is summarized below: Fair Value Measurements at June 30, 2021 Fair Value Measurements at December 31, 2020 Description Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 Gas Derivatives $ — $ (379,943) $ — $ — $ 117,545 $ — Interest Rate Swaps $ — $ (9,612) $ — $ — $ (14,270) $ —
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis	The carrying amounts and fair values of financial instruments for which the fair value option was not elected are as follows: June 30, 2021 December 31, 2020 Carrying Fair Carrying Fair Cash and Cash Equivalents $ 39,365 $ 39,365 $ 15,617 $ 15,617 Long-Term Debt (Excluding Debt Issuance Costs) $ 2,313,927 $ 2,594,481 $ 2,450,853 $ 2,638,251

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2021
Segment Reporting [Abstract]
Industry Segment Results	Industry segment results for the three months ended June 30, 2021 are: Shale Coalbed Methane Other Consolidated Natural Gas, NGL and Oil Revenue $ 332,659 $ 36,505 $ 285 $ 369,449 (A) Purchased Gas Revenue — — 16,706 16,706 Loss on Commodity Derivative Instruments (9,394) (962) (528,503) (538,859) Other Revenue and Operating Income 18,679 — 6,815 25,494 (B) Total Revenue and Other Operating Income (Loss) $ 341,944 $ 35,543 $ (504,697) $ (127,210) Total Operating Expense $ 191,996 $ 28,204 $ 60,511 $ 280,711 Earnings (Loss) Before Income Tax $ 149,948 $ 7,339 $ (603,463) $ (446,176) Segment Assets $ 6,095,486 $ 1,069,470 $ 907,154 $ 8,072,110 (C) Depreciation, Depletion and Amortization $ 104,380 $ 14,264 $ 3,963 $ 122,607 Capital Expenditures $ 127,230 $ 1,502 $ 226 $ 128,958 (A) Included in Total Natural Gas, NGL and Oil Revenue are sales of $60,162 to Citadel Energy Marketing LLC, which comprises over 10% of revenue from contracts with external customers for the period. (B) Includes midstream revenue of $18,679 and equity in earnings of unconsolidated affiliates of $1,553 for Shale and Other, respectively. (C) Includes investments in unconsolidated equity affiliates of $16,726. Industry segment results for the three months ended June 30, 2020 are: Shale Coalbed Methane Other Consolidated Natural Gas, NGL and Oil Revenue $ 152,627 $ 22,929 $ 220 $ 175,776 (D) Purchased Gas Revenue — — 20,424 20,424 Gain (Loss) on Commodity Derivative Instruments 100,262 13,005 (176,570) (63,303) (E) Other Revenue and Operating Income 12,191 — 3,753 15,944 (F) Total Revenue and Other Operating Income (Loss) $ 265,080 $ 35,934 $ (152,173) $ 148,841 Total Operating Expense $ 154,306 $ 29,324 $ 78,882 $ 262,512 Earnings (Loss) Before Income Tax $ 110,774 $ 6,610 $ (276,516) $ (159,132) Segment Assets $ 6,096,101 $ 1,132,217 $ 1,091,366 $ 8,319,684 (G) Depreciation, Depletion and Amortization $ 93,984 $ 15,701 $ 3,860 $ 113,545 Capital Expenditures $ 131,974 $ 2,034 $ 844 $ 134,852 (D) Included in Total Natural Gas, NGL and Oil Revenue are sales of $33,711 to Direct Energy Business Marketing LLC, which comprises over 10% of revenue from contracts with external customers for the period. (E) Included in Other is a realized gain on commodity derivative instruments of $29,015 related to the monetization of hedges (see Note 11 - Derivative Instruments for more information). (F) Includes midstream revenue of $12,191 and equity in losses of unconsolidated affiliates of $1,259 for Shale and Other, respectively. (G) Includes investments in unconsolidated equity affiliates of $15,159. Industry segment results for the six months ended June 30, 2021 are: Shale Coalbed Methane Other Consolidated Natural Gas, NGL and Oil Revenue $ 674,828 $ 75,409 $ 437 $ 750,674 (A) Purchased Gas Revenue — — 50,190 50,190 Loss on Commodity Derivative Instruments (7,212) (740) (497,493) (505,445) Other Revenue and Operating Income 37,745 — 12,700 50,445 (B) Total Revenue and Other Operating Income (Loss) $ 705,361 $ 74,669 $ (434,166) $ 345,864 Total Operating Expense $ 380,707 $ 56,759 $ 143,050 $ 580,516 Earnings (Loss) Before Income Tax $ 324,654 $ 17,910 $ (653,335) $ (310,771) Segment Assets $ 6,095,486 $ 1,069,470 $ 907,154 $ 8,072,110 (C) Depreciation, Depletion and Amortization $ 213,886 $ 29,747 $ 7,918 $ 251,551 Capital Expenditures $ 248,348 $ 3,644 $ 395 $ 252,387 (A) Included in Total Natural Gas, NGL and Oil Revenue are sales of $100,465 to Citadel Energy Marketing LLC and $80,189 to Direct Energy Business Marketing LLC, each of which comprises over 10% of revenue from contracts with external customers for the period. (B) Includes midstream revenue of $37,745 and equity in earnings of unconsolidated affiliates of $2,504 for Shale and Other, respectively. (C) Includes investments in unconsolidated equity affiliates of $16,726. Industry segment results for the six months ended June 30, 2020 are: Shale Coalbed Methane Other Consolidated Natural Gas, NGL and Oil Revenue $ 373,121 $ 53,652 $ 497 $ 427,270 (D) Purchased Gas Revenue — — 46,783 46,783 Gain (Loss) on Commodity Derivative Instruments 186,714 22,692 (157,567) 51,839 (E) Other Revenue and Operating Income 30,597 — 8,711 39,308 (F) Total Revenue and Other Operating Income (Loss) $ 590,432 $ 76,344 $ (101,576) $ 565,200 Total Operating Expense $ 346,254 $ 63,484 $ 696,073 $ 1,105,811 Earnings (Loss) Before Income Tax $ 244,178 $ 12,860 $ (873,975) $ (616,937) Segment Assets $ 6,096,101 $ 1,132,217 $ 1,091,366 $ 8,319,684 (G) Depreciation, Depletion and Amortization $ 201,030 $ 34,139 $ 7,540 $ 242,709 Capital Expenditures $ 279,814 $ 4,486 $ 2,601 $ 286,901 (D) Included in Total Natural Gas, NGL and Oil Revenue are sales of $79,367 to Direct Energy Business Marketing LLC, which comprises over 10% of revenue from contracts with external customers for the period. (E) Included in Other is a realized gain on commodity derivative instruments of $83,997 related to the monetization of hedges (see Note 11 - Derivative Instruments for more information). (F) Includes midstream revenue of $30,597 and equity in losses of unconsolidated affiliates of $1,421 for Shale and Other, respectively. (G) Includes investments in unconsolidated equity affiliates of $15,159.
Reconciliation of Revenue and Other Operating (Loss) Income from Segments to Consolidated	Revenue and Other Operating (Loss) Income For the Three Months Ended June 30, For the Six Months Ended June 30, 2021 2020 2021 2020 Total Segment Revenue from Contracts with External Customers $ 404,834 $ 208,391 $ 838,609 $ 504,650 (Loss) Gain on Commodity Derivative Instruments (538,859) (63,303) (505,445) 51,839 Other Operating Income 6,815 3,753 12,700 8,711 Total Consolidated Revenue and Other Operating (Loss) Income $ (127,210) $ 148,841 $ 345,864 $ 565,200

Basis of Presentation - Narrati

Basis of Presentation - Narrative (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Sep. 27, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Receivables related to contracts with customers	$ 157,667	$ 145,929
Other receivables	$ 10,727	$ 4,238
CNXM | Public Unitholders
Business Acquisition [Line Items]
Ownership percentage of public unitholders			46.90%
CNXM | CNX
Business Acquisition [Line Items]
Ownership percentage by parent			53.10%

Basis of Presentation - Schedul

Basis of Presentation - Schedule of Cash and Restricted Cash (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Cash and Cash Equivalents	$ 39,365	$ 15,617	$ 19,607
Restricted Cash, Current Portion	768	735	738
Restricted Cash, Less Current Portion	4,751	5,247	5,576
Total Cash, Cash Equivalents, and Restricted Cash	$ 44,884	$ 21,599	$ 25,921	$ 16,283

Basis of Presentation - Sched_2

Basis of Presentation - Schedule of Allowance for Credit Losses (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Trade Receivables
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Credit Losses, Beginning of Year	$ 84	$ 0
Provision for Expected Credit Losses	0	78
Allowance for Credit Losses, End of Period	84	78
Other Receivables
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for Credit Losses, Beginning of Year	3,248	2,463
Provision for Expected Credit Losses	(55)	2,736
Write-off of Uncollectible Accounts	(15)	(69)
Allowance for Credit Losses, End of Period	$ 3,178	$ 5,130

Earnings Per Share - Narrative

Earnings Per Share - Narrative (Details) - $ / shares	Sep. 28, 2020	Jun. 30, 2021
Convertible Debt | Convertible Senior Notes Due 2026
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Conversion price (in usd per share)		$ 12.84
CNXM, CNX Midstream GP LLC, CNX Resources Holding LLC Merger Agreement
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Entity shares issued per acquiree share (in shares)	0.88

Earnings Per Share - Anti-Dilut

Earnings Per Share - Anti-Dilutive Options and Units Excluded from Earnings Per Share (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from the computation of diluted earnings per share (in shares)	6,525,054	6,917,218	6,525,054	6,917,218
Anti-Dilutive Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from the computation of diluted earnings per share (in shares)	3,029,168	4,256,409	3,029,168	4,256,409
Anti-Dilutive Restricted Stock Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from the computation of diluted earnings per share (in shares)	2,484,443	2,009,678	2,484,443	2,009,678
Anti-Dilutive Performance Share Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from the computation of diluted earnings per share (in shares)	1,011,443	651,131	1,011,443	651,131

Earnings Per Share - Share-base

Earnings Per Share - Share-based Compensation (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total exercised or released (in shares)	34,261	402,996	1,684,039	1,018,595
Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options exercised (in shares)	205	239,839	656,573	239,839
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options exercised (in shares)	34,056	163,157	735,813	504,040
Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options exercised (in shares)	0	0	291,653	274,716

Earnings Per Share - Earnings P

Earnings Per Share - Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Numerator:
Net Loss	$ (354,059)	$ (130,486)	$ (256,034)	$ (435,709)
Less: Net Income Attributable to Noncontrolling Interest	0	15,263	0	39,126
Net Loss Attributable to CNX Resources Shareholders	$ (354,059)	$ (145,749)	$ (256,034)	$ (474,835)
Denominator:
Weighted-Average Shares of Common Stock Outstanding (in shares)	219,897,242	187,316,463	219,910,365	187,117,412
Effect of Diluted Shares (in shares)	0	0	0	0
Weighted-Average Diluted Shares of Common Stock Outstanding (in shares)	219,897,242	187,316,463	219,910,365	187,117,412
Loss per Share
Basic (in usd per share)	$ (1.61)	$ (0.78)	$ (1.16)	$ (2.54)
Diluted (in usd per share)	$ (1.61)	$ (0.78)	$ (1.16)	$ (2.54)

Revenue From Contracts With C_3

Revenue From Contracts With Customers - Narrative (Details) - USD ($)	6 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
Payment terms for contract with customers	25 days
Contract asset	$ 0
Receivables related to contracts with customers	$ 157,667,000	$ 145,929,000

Revenue From Contracts With C_4

Revenue From Contracts With Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue [Line Items]
(Loss) Gain on Commodity Derivative Instruments	$ (538,859)	$ (63,303)	$ (505,445)	$ 51,839
Other Revenue and Operating Income	25,494	15,944	50,445	39,308
Total Revenue and Other Operating (Loss) Income	(127,210)	148,841	345,864	565,200
Natural Gas Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers:	320,982	168,510	668,358	398,108
NGL Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers:	41,521	6,226	73,384	25,638
Oil/Condensate Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers:	6,946	1,040	8,932	3,524
Total Natural Gas, NGL and Oil Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers:	369,449	175,776	750,674	427,270
Purchased Gas Revenue
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers:	$ 16,706	$ 20,424	$ 50,190	$ 46,783

Revenue From Contracts With C_5

Revenue From Contracts With Customers - Performance Obligation (Details) $ in Thousands	Jun. 30, 2021USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations	$ 75,892
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations	$ 20,918
Remaining performance obligations, expected timing of satisfaction	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations	$ 17,438
Remaining performance obligations, expected timing of satisfaction	1 year

Income Taxes (Details)

Income Taxes (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Effective tax rate, percentage	20.60%	18.00%	17.60%	29.40%
AMT tax credit refund						$ 102,482,000
Total amount of uncertain tax positions	$ 31,891,000		$ 31,891,000		$ 31,891,000
Unrecognized tax benefits that would impact effective tax rate	31,891,000		31,891,000		31,891,000
Accrued interest liability	0		$ 0		$ 0
Net increase in deferred tax expense	11,455,000
Increase in deferred taxes relating to state apportionment rate changes	16,507,000
State Net Operating Loss
Valuation Allowance [Line Items]
Change in valuation allowance	$ 5,052,000

Property, Plant and Equipment -

Property, Plant and Equipment - Components (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Intangible Drilling Cost	$ 5,127,989	$ 4,965,252
Gas Gathering Equipment	2,459,197	2,510,917
Proved Gas Properties	1,271,774	1,253,094
Gas Wells and Related Equipment	1,164,025	1,120,061
Unproved Gas Properties	718,042	725,705
Surface Land and Other Equipment	197,956	199,322
Other	189,513	189,645
Total Property, Plant and Equipment	11,128,496	10,963,996
Less: Accumulated Depreciation, Depletion and Amortization	4,119,856	3,938,451
Total Property, Plant and Equipment—Net	$ 7,008,640	$ 7,025,545

Property, Plant, and Equipment

Property, Plant, and Equipment - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Property, Plant and Equipment [Line Items]
Impairment of Exploration and Production Properties	$ 0	$ 0	$ 0	$ 61,849
Southwest Pennsylvania CBM Asset Group [Member]
Property, Plant and Equipment [Line Items]
Impairment of Exploration and Production Properties				$ 61,849

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended			6 Months Ended
	Dec. 31, 2017	Jun. 30, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Jan. 03, 2018
Goodwill [Line Items]
Goodwill		$ 323,314	$ 323,314		$ 323,314	$ 323,314	$ 323,314	$ 796,359
Impairment of goodwill		0	0	$ 473,045	$ 0	473,045
Useful life, customer relationship intangible assets					17 years
Amortization expense		1,638	$ 1,638		$ 3,276	$ 3,276
Estimated annual amortization expense, Year 2021		6,552			6,552
Estimated annual amortization expense, Year 2022		6,552			6,552
Estimated annual amortization expense, Year 2023		6,552			6,552
Estimated annual amortization expense, Year 2024		6,552			6,552
Estimated annual amortization expense, Year 2025		$ 6,552			$ 6,552
Midstream Acquisition
Goodwill [Line Items]
Cash consideration transferred	$ 305,000
Fair value of previously held equity interest	$ 799,033
Goodwill									$ 796,359
Other intangible assets									$ 128,781
CNX Gathering LLC
Goodwill [Line Items]
Ownership percentage in equity method investment	50.00%

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets - Schedule of Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Goodwill [Roll Forward]
Carrying Amount, Beginning of Period			$ 796,359	$ 323,314	$ 796,359
Impairment	$ 0	$ 0	$ 473,045	0	473,045
Carrying Amount, End of Period	$ 323,314	$ 323,314		$ 323,314	$ 323,314

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets - Carrying Amount and Accumulated Amortization of Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Gross Amortizable Asset - Customer Relationships	$ 109,752	$ 109,752
Less: Accumulated Amortization - Customer Relationships	22,933	19,657
Total Other Intangible Assets, net	$ 86,819	$ 90,095

Revolving Credit Facilities (De

Revolving Credit Facilities (Details) - USD ($)	6 Months Ended
	Jun. 30, 2021	Apr. 30, 2021	Dec. 31, 2020	Nov. 30, 2020	Apr. 30, 2020	Jun. 30, 2019	Apr. 30, 2019
Short-term Debt [Line Items]
Value of proved reserves, percentage to mortgage	85.00%
Value of proved developing producing reserves, percentage to mortgage	85.00%
Federal Funds Open Rate
Short-term Debt [Line Items]
Basis spread on variable rate	0.50%
Federal Funds Open Rate | Midstream
Short-term Debt [Line Items]
Basis spread on variable rate	0.50%
One-Month LIBOR
Short-term Debt [Line Items]
Basis spread on variable rate	1.00%
One-Month LIBOR | Midstream
Short-term Debt [Line Items]
Basis spread on variable rate	1.00%
One-Month LIBOR | Minimum
Short-term Debt [Line Items]
Basis spread on variable rate	0.75%
One-Month LIBOR | Minimum | Midstream
Short-term Debt [Line Items]
Basis spread on variable rate	0.50%
One-Month LIBOR | Maximum
Short-term Debt [Line Items]
Basis spread on variable rate	1.75%
One-Month LIBOR | Maximum | Midstream
Short-term Debt [Line Items]
Basis spread on variable rate	1.50%
LIBOR | Minimum
Short-term Debt [Line Items]
Basis spread on variable rate	1.75%
LIBOR | Minimum | Midstream
Short-term Debt [Line Items]
Basis spread on variable rate	1.50%
LIBOR | Maximum
Short-term Debt [Line Items]
Basis spread on variable rate	2.75%
LIBOR | Maximum | Midstream
Short-term Debt [Line Items]
Basis spread on variable rate	2.50%
Revolving Credit Facility
Short-term Debt [Line Items]
Debt instrument, face amount						$ 160,000,000
Initial borrowing base		$ 1,775,000,000		$ 1,775,000,000	$ 1,900,000,000
Minimum current ratio	1
Borrowings outstanding	$ 160,000,000		$ 160,800,000
Letters of credit outstanding	188,567,000		185,272,000
Borrowings and issuance of letters of credit remaining capacity	1,426,433,000		1,428,928,000
Letters of credit aggregate sub-limit				1,775,000,000
Revolving Credit Facility | Midstream
Short-term Debt [Line Items]
Borrowings outstanding	160,000,000		291,000,000
Letters of credit outstanding	30,000		30,000
Borrowings and issuance of letters of credit remaining capacity	$ 439,970,000
Letters of credit aggregate sub-limit							$ 600,000,000
Increase in available borrowings							250,000,000
Maximum borrowing capacity, letters of credit							$ 100,000,000
Interest coverage ratio	2.50
Revolving credit available for borrowing			308,970,000
Revolving Credit Facility | Minimum | Midstream
Short-term Debt [Line Items]
Maximum net leverage ratio	5.25
Total leverage ratio	4.75
Revolving Credit Facility | Maximum
Short-term Debt [Line Items]
Net leverage ratio	4
Revolving Credit Facility | Maximum | Midstream
Short-term Debt [Line Items]
Maximum net leverage ratio	5.50
Total leverage ratio	5.25
Secured leverage ratio	3.50
Senior Notes due in January 2029 | Debt Instrument, Issuance, Period Two
Short-term Debt [Line Items]
Debt instrument, face amount				$ 500,000,000
Stated rate, debt instrument				6.00%
6.50% Senior Notes due March 2026
Short-term Debt [Line Items]
Debt instrument, face amount	$ 400,000,000		$ 400,000,000
Stated rate, debt instrument	6.50%		6.50%
6.50% Senior Notes due March 2026 | Midstream
Short-term Debt [Line Items]
Stated rate, debt instrument	6.50%
6.50% Senior Notes due March 2026 | Minimum | Midstream
Short-term Debt [Line Items]
Debt instrument, face amount	$ 150,000,000
6.50% Senior Notes due March 2026 | Maximum | Midstream
Short-term Debt [Line Items]
Debt instrument, face amount	$ 150,000,000

Other Accrued Liabilities (Deta

Other Accrued Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Payables and Accruals [Abstract]
Royalties	$ 85,968	$ 72,401
Accrued Interest	41,310	26,549
Transportation Charges	17,648	15,969
Accrued Other Taxes	13,430	10,580
Deferred Revenue	10,980	10,986
Accrued Payroll & Benefits	7,070	5,009
Short-Term Incentive Compensation	5,323	20,340
Litigation Contingency	2,410	2,025
Purchased Gas Payable	428	1,528
Other	9,306	23,144
Current Portion of Long-Term Liabilities:
Asset Retirement Obligations	8,455	8,455
Salary Retirement	1,817	1,787
Total Other Accrued Liabilities	$ 204,145	$ 198,773

Long-Term Debt - Schedule of Lo

Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($)	Jun. 30, 2021	Dec. 31, 2020	Mar. 31, 2020	Jun. 30, 2019
Debt Instrument [Line Items]
Less: Unamortized Debt Issuance Costs	$ 24,859,000	$ 26,852,000
Total Debt	2,289,068,000	2,424,001,000
Less: Amounts Due in One Year	23,098,000	22,574,000
Long-Term Debt	$ 2,265,970,000	$ 2,401,427,000
Senior Notes Due March 2027
Debt Instrument [Line Items]
Stated rate, debt instrument	7.25%	7.25%
Debt instrument, face amount	$ 700,000,000	$ 700,000,000
Debt instrument, unamortized premium	6,147,000	6,686,000
Total Debt	$ 706,147,000	$ 706,686,000
Senior Notes due January 2029
Debt Instrument [Line Items]
Stated rate, debt instrument	6.00%	6.00%
Total Debt	$ 500,000,000	$ 500,000,000
Senior Notes Due March 2026
Debt Instrument [Line Items]
Stated rate, debt instrument	6.50%	6.50%
Debt instrument, face amount	$ 400,000,000	$ 400,000,000
Debt instrument, unamortized discount	3,500,000	3,875,000
Total Debt	$ 396,500,000	$ 396,125,000
Convertible Senior Notes Due May 2026
Debt Instrument [Line Items]
Stated rate, debt instrument	2.25%	2.25%
Debt instrument, face amount	$ 345,000,000	$ 345,000,000
Debt instrument, unamortized discount	99,695,000	107,735,000
Total Debt	245,305,000	237,265,000
Revolving Credit Facility
Debt Instrument [Line Items]
Debt instrument, face amount				$ 160,000,000
Revolving Credit Facility | CNX Midstream Partners LP Revolving Credit Facility
Debt Instrument [Line Items]
Total Debt	160,000,000	291,000,000
Revolving Credit Facility | CNX Revolving Credit Facility
Debt Instrument [Line Items]
Total Debt	160,000,000	160,800,000
Line of Credit
Debt Instrument [Line Items]
Debt instrument, face amount			$ 175,000,000
Line of Credit | Cardinal States Gathering Company Credit Facility maturing in March 2028
Debt Instrument [Line Items]
Debt instrument, face amount	107,705,000	114,985,000
Debt instrument, unamortized discount	1,048,000	1,126,000
Total Debt	106,657,000	113,859,000
Line of Credit | CSG Holdings II LLC Credit Facility maturing in March 2027
Debt Instrument [Line Items]
Debt instrument, face amount	39,726,000	45,559,000
Debt instrument, unamortized discount	408,000	441,000
Total Debt	$ 39,318,000	$ 45,118,000

Long-Term Debt - Narrative (Det

Long-Term Debt - Narrative (Details)	1 Months Ended	3 Months Ended		6 Months Ended
	Apr. 30, 2020USD ($)day$ / shares	Jun. 30, 2021USD ($)$ / shares	Jun. 30, 2020USD ($)	Jun. 30, 2021USD ($)$ / shares	Jun. 30, 2020USD ($)	Dec. 31, 2020USD ($)	Mar. 31, 2020USD ($)
Debt Instrument [Line Items]
Proceeds from issuance of convertible senior notes			$ 334,650,000	$ 0	$ 334,650,000
Closing stock price (in usd per share) | $ / shares		$ 13.66		$ 13.66
Cost incurred in connection with Capped Calls				$ 0	35,673,000
Loss (gain) on debt extinguishment		$ 0	344,000	$ 0	(10,919,000)
Line of Credit
Debt Instrument [Line Items]
Debt instrument, face amount							$ 175,000,000
Minimum | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate				1.75%
Maximum | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate				2.75%
Capped Call Transaction
Debt Instrument [Line Items]
Cost incurred in connection with Capped Calls	$ 35,673,000
Capped Call Transaction | Call Option | Minimum
Debt Instrument [Line Items]
Strike price (in usd per share) | $ / shares	$ 12.84
Capped Call Transaction | Call Option | Maximum
Debt Instrument [Line Items]
Strike price (in usd per share) | $ / shares	$ 18.19
Convertible Senior Notes Due 2026
Debt Instrument [Line Items]
Debt instrument, face amount		$ 345,000,000		$ 345,000,000		$ 345,000,000
Stated rate, debt instrument		2.25%		2.25%		2.25%
Cardinal States Gathering Company Credit Facility maturing in March 2028 | Line of Credit
Debt Instrument [Line Items]
Debt instrument, face amount		$ 107,705,000		$ 107,705,000		$ 114,985,000
Line of credit facility maximum borrowing capacity			125,000,000		$ 125,000,000
Cardinal States Gathering Company Credit Facility maturing in March 2028 | Line of Credit | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate					4.50%
CSG Holdings II LLC Credit Facility maturing in March 2027 | Line of Credit
Debt Instrument [Line Items]
Debt instrument, face amount		$ 39,726,000		$ 39,726,000		$ 45,559,000
Line of credit facility maximum borrowing capacity			$ 50,000,000		$ 50,000,000
CSG Holdings II LLC Credit Facility maturing in March 2027 | Line of Credit | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate					6.75%
Senior Notes Due April 2022
Debt Instrument [Line Items]
Stated rate, debt instrument			5.875%		5.875%
Purchase of outstanding debt			$ 409,625,000		$ 480,959,000
Loss (gain) on debt extinguishment			$ 344,000		$ (10,919,000)
Convertible Debt | Convertible Senior Notes Due 2026
Debt Instrument [Line Items]
Debt instrument, face amount	$ 345,000,000
Stated rate, debt instrument	2.25%
Conversion ratio (in shares)	77.8816
Conversion price (in usd per share) | $ / shares		$ 12.84		$ 12.84
Amount of if-converted value in excess of principal amount		$ 95,439,000		$ 95,439,000
Threshold percentage of stock price trigger	130.00%
Debt issuance costs gross	$ 10,350,000
Convertible Debt | Convertible Senior Notes Due 2026 | Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
Threshold trading days | day	20
Threshold consecutive trading days | day	30
Convertible Debt | Convertible Senior Notes Due 2026 | Debt Instrument, Redemption, Period Two
Debt Instrument [Line Items]
Threshold percentage of stock price trigger	98.00%
Threshold trading days | day	5
Threshold consecutive trading days | day	10
Convertible Debt | Convertible 2.25% Senior Notes Due 2026, Additional Option To Initial Purchasers
Debt Instrument [Line Items]
Debt instrument, face amount	$ 45,000
Convertible Debt | Convertible 2.25% Senior Notes Due 2026, Liability Component
Debt Instrument [Line Items]
Debt issuance costs gross	7,024,000
Convertible Debt | Convertible 2.25% Senior Notes Due 2026, Equity Component
Debt Instrument [Line Items]
Debt issuance costs gross	$ 3,326,000

Long-Term Debt - Schedule of Co

Long-Term Debt - Schedule of Convertible Debt (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Debt Instrument [Line Items]
Unamortized Issuance Costs		$ (24,859)		$ (26,852)
Total Debt		2,289,068		2,424,001
Equity Component, net of Purchase Discounts and Issuance Costs	$ 78,307	(33)	$ 78,307
Convertible Senior Notes Due 2026
Debt Instrument [Line Items]
Total Debt		245,305		237,265
Convertible Debt | Convertible Senior Notes Due 2026
Debt Instrument [Line Items]
Principal		345,000		345,000
Unamortized Discount		(93,836)		(101,367)
Unamortized Issuance Costs		(5,859)		(6,368)
Total Debt		245,305		237,265
Equity Component, net of Purchase Discounts and Issuance Costs		$ 78,284		$ 78,317

Long-Term Debt - Schedule of In

Long-Term Debt - Schedule of Interest (Details) - Convertible Debt - Convertible Senior Notes Due 2026 - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Debt Instrument [Line Items]
Contractual Interest Expense	$ 1,941	$ 1,294	$ 3,881	$ 1,294
Amortization of Debt Discount	3,809	2,325	7,531	2,325
Amortization of Issuance Costs	256	161	509	161
Total Interest Expense	$ 6,006	$ 3,780	$ 11,921	$ 3,780

Commitments and Contingent Li_3

Commitments and Contingent Liabilities - Narrative (Details)	May 01, 2020retiree
Commitments and Contingencies Disclosure [Abstract]
Number of impacted retirees	2,159

Commitments and Contingent Li_4

Commitments and Contingent Liabilities - Amount of Commitment Expiration Per Period (Details) $ in Thousands	Jun. 30, 2021USD ($)
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	$ 294,067
Less Than 1  Year
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	292,512
1-3 Years
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	1,555
3-5 Years
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Beyond 5  Years
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Letters of Credit | Firm Transportation
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	181,576
Letters of Credit | Other
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	7,021
Letters of Credit | Loss Contingencies by Secondary Nature of Contingency
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	188,597
Letters of Credit | Less Than 1  Year | Firm Transportation
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	181,576
Letters of Credit | Less Than 1  Year | Other
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	7,021
Letters of Credit | Less Than 1  Year | Loss Contingencies by Secondary Nature of Contingency
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	188,597
Letters of Credit | 1-3 Years | Firm Transportation
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Letters of Credit | 1-3 Years | Other
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Letters of Credit | 1-3 Years | Loss Contingencies by Secondary Nature of Contingency
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Letters of Credit | 3-5 Years | Firm Transportation
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Letters of Credit | 3-5 Years | Other
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Letters of Credit | 3-5 Years | Loss Contingencies by Secondary Nature of Contingency
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Letters of Credit | Beyond 5  Years | Firm Transportation
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Letters of Credit | Beyond 5  Years | Other
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Letters of Credit | Beyond 5  Years | Loss Contingencies by Secondary Nature of Contingency
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Surety Bond | Employee-Related
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	2,600
Surety Bond | Environmental
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	12,017
Surety Bond | Financial Guarantees
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	81,670
Surety Bond | Other
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	9,183
Surety Bond | Loss Contingencies by Secondary Nature of Contingency
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	105,470
Surety Bond | Less Than 1  Year | Employee-Related
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	2,600
Surety Bond | Less Than 1  Year | Environmental
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	11,959
Surety Bond | Less Than 1  Year | Financial Guarantees
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	81,670
Surety Bond | Less Than 1  Year | Other
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	7,686
Surety Bond | Less Than 1  Year | Loss Contingencies by Secondary Nature of Contingency
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	103,915
Surety Bond | 1-3 Years | Employee-Related
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Surety Bond | 1-3 Years | Environmental
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	58
Surety Bond | 1-3 Years | Financial Guarantees
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Surety Bond | 1-3 Years | Other
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	1,497
Surety Bond | 1-3 Years | Loss Contingencies by Secondary Nature of Contingency
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	1,555
Surety Bond | 3-5 Years | Employee-Related
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Surety Bond | 3-5 Years | Environmental
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Surety Bond | 3-5 Years | Financial Guarantees
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Surety Bond | 3-5 Years | Other
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Surety Bond | 3-5 Years | Loss Contingencies by Secondary Nature of Contingency
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Surety Bond | Beyond 5  Years | Employee-Related
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Surety Bond | Beyond 5  Years | Environmental
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Surety Bond | Beyond 5  Years | Financial Guarantees
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Surety Bond | Beyond 5  Years | Other
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Surety Bond | Beyond 5  Years | Loss Contingencies by Secondary Nature of Contingency
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	$ 0

Commitments and Contingent Li_5

Commitments and Contingent Liabilities - Unrecorded Unconditional Purchase Obligation (Details) - Purchase Commitment $ in Thousands	Jun. 30, 2021USD ($)
Unrecorded Unconditional Purchase Obligation [Line Items]
Less than 1 year	$ 266,355
1 - 3 years	439,639
3 - 5 years	403,228
More than 5 years	1,037,719
Total Purchase Obligations	$ 2,146,941

Derivative Instruments - Narrat

Derivative Instruments - Narrative (Details)	1 Months Ended		3 Months Ended		6 Months Ended
	Mar. 31, 2020USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2021USD ($)	Jun. 30, 2020USD ($)BTU	Jun. 30, 2021USD ($)BTU	Jun. 30, 2020USD ($)
Derivative [Line Items]
Cash received (paid) in settlement of commodity derivative instruments			$ (10,359,000)	$ 142,256,000	$ (7,954,000)	$ 293,417,000
Interest Rate Swap on Line of Credit | Long
Derivative [Line Items]
Put option, basis points (as a percent)	0.25%
Interest Rate Swap on Revolving Credit Facility | Long
Derivative [Line Items]
Put option, basis points (as a percent)	0.00%
Term of derivative contract	4 years
Derivative notional amount	$ 250,000,000
NYMEX Natural Gas Hedges | Natural Gas
Derivative [Line Items]
Cash received (paid) in settlement of commodity derivative instruments				$ 29,015,000		29,015,000
Quantity of natural gas contract terminated (in Btus) | BTU				39,000,000,000,000	39,000,000,000,000
NYMEX Commodity Swaps | Natural Gas
Derivative [Line Items]
Cash received (paid) in settlement of commodity derivative instruments						$ 54,982,000
Line of Credit
Derivative [Line Items]
Credit facility, face amount	$ 175,000,000
Revolving Credit Facility
Derivative [Line Items]
Credit facility, face amount		$ 160,000,000
Credit facility, modification period		3 years

Derivative Instruments - Notion

Derivative Instruments - Notional Amounts of Derivative Instruments (Details) $ in Thousands, Mcf in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2021USD ($)Mcf	Dec. 31, 2020USD ($)Mcf
Commodity Member
Derivative [Line Items]
Notional amount (in mcf)	1,623	1,256.9
Basis Swap
Derivative [Line Items]
Notional amount (in mcf)	1,288.7	1,294.1
Interest Rate Swap
Derivative [Line Items]
Derivative notional amount | $	$ 558,899	$ 569,972
Basis Swap Purchased
Derivative [Line Items]
Notional amount (in mcf)	13.5

Derivative Instruments - Fair V

Derivative Instruments - Fair Value of Derivative Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Derivative [Line Items]
Total Current Assets	$ 107,625	$ 84,657
Total Other Non-Current Assets	204,459	188,237
Total Current Liabilities	415,774	42,329
Total Non-Current Liabilities	285,865	127,290
Commodity Swap
Derivative [Line Items]
Total Current Assets	576	53,668
Total Other Non-Current Assets	30,055	134,661
Total Current Liabilities	393,982	23,506
Total Non-Current Liabilities	258,360	59,388
Basis Swap
Derivative [Line Items]
Total Current Assets	106,921	30,848
Total Other Non-Current Assets	173,957	52,903
Total Current Liabilities	18,103	14,491
Total Non-Current Liabilities	21,007	57,150
Interest Rate Swap
Derivative [Line Items]
Total Current Assets	128	141
Total Other Non-Current Assets	447	673
Total Current Liabilities	3,689	4,332
Total Non-Current Liabilities	$ 6,498	$ 10,752

Derivative Instruments - The Ef

Derivative Instruments - The Effect of Derivative Instruments on the Consolidated Statement of Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Derivative [Line Items]
Cash (Paid) Received in Settlement of Commodity Derivative Instruments:	$ (10,359)	$ 142,256	$ (7,954)	$ 293,417
Unrealized (Loss) Gain on Commodity Derivative Instruments:	(528,500)	(205,559)	(497,491)	(241,578)
(Loss) Gain on Derivative Instruments	(538,859)	(63,303)	(505,445)	51,839
Interest Rate Swap
Derivative [Line Items]
Cash Paid in Settlement of Interest Rate Swaps	(1,240)	(536)	(2,467)	(592)
Unrealized Gain (Loss) on Interest Rate Swaps	465	(3,598)	4,659	(14,237)
(Loss) Gain on Derivative Instruments	(775)	(4,134)	2,192	(14,829)
Natural Gas | Commodity Swap
Derivative [Line Items]
Cash (Paid) Received in Settlement of Commodity Derivative Instruments:	(16,492)	153,149	(9,942)	310,728
Unrealized (Loss) Gain on Commodity Derivative Instruments:	(629,688)	(182,119)	(727,147)	(181,573)
(Loss) Gain on Derivative Instruments	(646,180)	(28,970)	(737,089)	129,155
Natural Gas | Basis Swap
Derivative [Line Items]
Cash (Paid) Received in Settlement of Commodity Derivative Instruments:	6,133	(10,893)	1,988	(17,311)
Unrealized (Loss) Gain on Commodity Derivative Instruments:	101,188	(23,440)	229,656	(60,005)
(Loss) Gain on Derivative Instruments	$ 107,321	$ (34,333)	$ 231,644	$ (77,316)

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Financial Instruments Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Fair Value, Inputs, Level 1 | Gas Derivatives
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Derivative Asset	$ 0	$ 0
Fair Value, Inputs, Level 1 | Interest Rate Swaps
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Derivative Asset	0	0
Fair Value, Inputs, Level 2 | Gas Derivatives
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Derivative Asset	(379,943)	117,545
Fair Value, Inputs, Level 2 | Interest Rate Swaps
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Derivative Asset	(9,612)	(14,270)
Fair Value, Inputs, Level 3 | Gas Derivatives
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Derivative Asset	0	0
Fair Value, Inputs, Level 3 | Interest Rate Swaps
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Derivative Asset	$ 0	$ 0

Fair Value of Financial Instr_4

Fair Value of Financial Instruments - Fair Value Disclosures (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents	$ 39,365	$ 15,617	$ 19,607
Long-Term Debt (Excluding Debt Issuance Costs)	2,289,068	2,424,001
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents	39,365	15,617
Long-Term Debt (Excluding Debt Issuance Costs)	2,313,927	2,450,853
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents	39,365	15,617
Long-Term Debt (Excluding Debt Issuance Costs)	$ 2,594,481	$ 2,638,251

Acquisitions and Dispositions (

Acquisitions and Dispositions (Details) - CNXM	Sep. 27, 2020
Public Unitholders
Business Acquisition [Line Items]
Ownership percentage of public unitholders	46.90%
CNX
Business Acquisition [Line Items]
Ownership percentage by parent	53.10%

Segment Information - Narrative

Segment Information - Narrative (Details) - segment	6 Months Ended	8 Months Ended
	Jun. 30, 2021	Aug. 31, 2020
Segment Reporting Information [Line Items]
Number of reportable segments	2
Number of divisions		2
Exploration and Production
Segment Reporting Information [Line Items]
Number of reportable segments		4

Segment Information - Industry

Segment Information - Industry Segment Results (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Segment Reporting Information [Line Items]
Gain (Loss) on Commodity Derivative Instruments	$ (538,859)	$ (63,303)	$ (505,445)	$ 51,839
Other Revenue and Operating Income	25,494	15,944	50,445	39,308
Total Revenue and Other Operating (Loss) Income	(127,210)	148,841	345,864	565,200
Total Operating Expense	280,711	262,512	580,516	1,105,811
Loss Before Income Tax	(446,176)	(159,132)	(310,771)	(616,937)
Assets	8,072,110	8,319,684	8,072,110	8,319,684	$ 8,041,764
Depreciation, Depletion and Amortization	122,607	113,545	251,551	242,709
Capital Expenditures	128,958	134,852	252,387	286,901
Investments in unconsolidated equity affiliates	16,726	15,159	16,726	15,159
Natural Gas | Commodity Swap
Segment Reporting Information [Line Items]
Gain (Loss) on Commodity Derivative Instruments	(646,180)	(28,970)	(737,089)	129,155
Natural Gas, NGL and Oil Revenue
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers:	369,449	175,776	750,674	427,270
Natural Gas, NGL and Oil Revenue | Citadel Energy Marketing, LLC
Segment Reporting Information [Line Items]
Total Revenue and Other Operating (Loss) Income	60,162		100,465
Natural Gas, NGL and Oil Revenue | Direct Energy Business Marketing LLC
Segment Reporting Information [Line Items]
Total Revenue and Other Operating (Loss) Income		33,711	80,189	79,367
Purchased Gas Revenue
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers:	16,706	20,424	50,190	46,783
Operating Segments
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers:	404,834	208,391	838,609	504,650
Operating Segments | Shale
Segment Reporting Information [Line Items]
Gain (Loss) on Commodity Derivative Instruments	(9,394)	100,262	(7,212)	186,714
Other Revenue and Operating Income	18,679	12,191	37,745	30,597
Total Revenue and Other Operating (Loss) Income	341,944	265,080	705,361	590,432
Total Operating Expense	191,996	154,306	380,707	346,254
Loss Before Income Tax	149,948	110,774	324,654	244,178
Assets	6,095,486	6,096,101	6,095,486	6,096,101
Depreciation, Depletion and Amortization	104,380	93,984	213,886	201,030
Capital Expenditures	127,230	131,974	248,348	279,814
Operating Segments | Shale | Natural Gas, NGL and Oil Revenue
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers:	332,659	152,627	674,828	373,121
Operating Segments | Shale | Purchased Gas Revenue
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers:	0	0	0	0
Operating Segments | Coalbed Methane
Segment Reporting Information [Line Items]
Gain (Loss) on Commodity Derivative Instruments	(962)	13,005	(740)	22,692
Other Revenue and Operating Income	0	0	0	0
Total Revenue and Other Operating (Loss) Income	35,543	35,934	74,669	76,344
Total Operating Expense	28,204	29,324	56,759	63,484
Loss Before Income Tax	7,339	6,610	17,910	12,860
Assets	1,069,470	1,132,217	1,069,470	1,132,217
Depreciation, Depletion and Amortization	14,264	15,701	29,747	34,139
Capital Expenditures	1,502	2,034	3,644	4,486
Operating Segments | Coalbed Methane | Natural Gas, NGL and Oil Revenue
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers:	36,505	22,929	75,409	53,652
Operating Segments | Coalbed Methane | Purchased Gas Revenue
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers:	0	0	0	0
Other
Segment Reporting Information [Line Items]
Gain (Loss) on Commodity Derivative Instruments	(528,503)	(176,570)	(497,493)	(157,567)
Other Revenue and Operating Income	6,815	3,753	12,700	8,711
Total Revenue and Other Operating (Loss) Income	(504,697)	(152,173)	(434,166)	(101,576)
Total Operating Expense	60,511	78,882	143,050	696,073
Loss Before Income Tax	(603,463)	(276,516)	(653,335)	(873,975)
Assets	907,154	1,091,366	907,154	1,091,366
Depreciation, Depletion and Amortization	3,963	3,860	7,918	7,540
Capital Expenditures	226	844	395	2,601
Equity in earnings (loss) of unconsolidated affiliates	1,553	1,259	2,504	1,421
Other | Natural Gas | Commodity Swap
Segment Reporting Information [Line Items]
Gain (Loss) on Commodity Derivative Instruments		29,015		83,997
Other | Natural Gas, NGL and Oil Revenue
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers:	285	220	437	497
Other | Purchased Gas Revenue
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers:	$ 16,706	$ 20,424	$ 50,190	$ 46,783

Segment Information - Reconcili

Segment Information - Reconciliation of Segment Information, Revenue and Other Operating (Loss) Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue, Major Customer [Line Items]
(Loss) Gain on Commodity Derivative Instruments	$ (538,859)	$ (63,303)	$ (505,445)	$ 51,839
Other Operating Income	6,815	3,753	12,700	8,711
Total Revenue and Other Operating (Loss) Income	(127,210)	148,841	345,864	565,200
Operating Segments
Revenue, Major Customer [Line Items]
Total Segment Revenue from Contracts with External Customers	$ 404,834	$ 208,391	$ 838,609	$ 504,650

Stock Repurchase (Details)

Stock Repurchase (Details) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021	Jun. 30, 2020	Jan. 26, 2021	Dec. 31, 2020
Equity [Abstract]
Share repurchase program, authorized amount				$ 900,000,000	$ 750,000,000
Amount available under the current stock repurchase program	$ 214,686,000	$ 214,686,000
Shares repurchased during period (in shares)		3,095,241	0
Shares repurchased, average price (in usd per share)		$ 13.12
Total value of shares repurchased	$ 22,691,000	$ 40,678,000