Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash Flows from Operating Activities:
Net (Loss) Income	$ (435,709)	$ 128,044
Adjustments to Reconcile Net (Loss) Income to Net Cash Provided by Operating Activities:
Depreciation, Depletion and Amortization	242,709	254,159
Amortization of Deferred Financing Costs	8,795	4,408
Impairment of Exploration and Production Properties	61,849	0
Impairment of Goodwill	473,045	0
Stock-Based Compensation	9,406	34,776
(Gain) Loss on Asset Sales and Abandonments	(17,992)	2,699
Loss (Gain) on Debt Extinguishment	(10,919)	7,614
Gain on Commodity Derivative Instruments	(51,839)	(26,205)
Loss on Other Derivative Instruments	14,237	0
Net Cash Received (Paid) in Settlement of Commodity Derivative Instruments	293,417	(30,710)
Deferred Income Taxes	(125,429)	29,231
Equity in Loss (Earnings) of Affiliates	1,421	(1,030)
Return on Equity Investment	131	2,056
Changes in Operating Assets:
Accounts and Notes Receivable	68,270	125,991
Recoverable Income Taxes	(52,015)	35,888
Supplies Inventories	(3,333)	(1,527)
Prepaid Expenses	6,542	4,287
Changes in Other Assets	396	(105)
Changes in Operating Liabilities:
Accounts Payable	(15,488)	29,346
Accrued Interest	(5,558)	5,050
Other Operating Liabilities	(49,620)	(36,392)
Changes in Other Liabilities	(1,131)	(6,907)
Net Cash Provided by Operating Activities	411,185	560,673
Cash Flows from Investing Activities:
Capital Expenditures	(286,901)	(628,365)
Proceeds from Asset Sales	26,126	7,087
Net Cash Used in Investing Activities	(260,775)	(621,278)
Cash Flows from Financing Activities:
Payments on Miscellaneous Borrowings	(3,569)	(3,515)
Payments on Long-Term Notes	(468,865)	(405,876)
Net Proceeds from CNXM Revolving Credit Facility	7,250	124,000
Net (Payments on) Proceeds from CNX Revolving Credit Facility	(111,000)
Net (Payments on) Proceeds from CNX Revolving Credit Facility		18,000
Proceeds from Issuance of CNX Senior Notes	0	500,000
Net Proceeds from CSG Non-Revolving Credit Facilities	169,583	0
Proceeds from Issuance of Convertible Senior Notes	334,650	0
Purchase of Capped Call Related to Convertible Senior Notes	(35,673)	0
Distributions to CNXM Noncontrolling Interest Holders	(20,932)	(30,812)
Proceeds from Issuance of Common Stock	1,654	161
Shares Withheld for Taxes	(1,953)	(6,222)
Purchases of Common Stock	0	(109,780)
Debt Issuance and Financing Fees	(11,917)	(9,938)
Net Cash (Used in) Provided by Financing Activities	(140,772)	76,018
Net Increase in Cash, Cash Equivalents and Restricted Cash	9,638	15,413
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	16,283	17,198
Cash, Cash Equivalents, and Restricted Cash at End of Period	$ 25,921	$ 32,611