CNX Resources (CNX) 10-Q 2 Aug 18 2018 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Jul. 17, 2018
Document Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q2
Entity Registrant Name	CNX Resources Corporation
Entity Central Index Key	1,070,412
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		213,059,169

Consolidated Statements of Inco

Consolidated Statements of Income (unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues and Other Operating Income:
Gain on Commodity Derivative Instruments	$ 25,660	$ 83,788	$ 60,747	$ 61,325
Other Operating Income	8,534	16,658	19,244	32,308
Total Revenue	402,124	371,068	897,853	690,996
Operating Expense
Lease Operating Expense	25,338	21,074	62,148	42,705
Production, Ad Valorem, and Other Fees	7,703	4,606	16,936	13,935
Depreciation, Depletion and Amortization	119,087	91,640	243,754	187,318
Purchased Gas Costs	9,747	10,194	26,801	19,089
Impairment of Exploration and Production Properties	0	0	0	137,865
Impairment of Other Intangible Assets	18,650	0	18,650	0
Selling, General, and Administrative Costs	34,909	21,754	66,258	43,556
Other Operating Expense	17,786	24,106	33,832	42,282
Operating Expenses	312,686	279,690	636,486	697,183
Other (Income) Expense
Other Expense (Income)	575	5,475	(5,917)	9,550
Gain on Asset Sales	(3,280)	(134,581)	(14,622)	(138,577)
Gain on Previously Held Equity Interest	0	0	(623,663)	0
Loss (Gain) on Debt Extinguishment	23,413	36	39,048	(786)
Interest Expense	38,438	40,683	76,989	82,289
Total Other Expense (Income)	59,146	(88,387)	(528,165)	(47,524)
Total Expense	371,832	191,303	108,321	649,659
Earnings From Continuing Operations Before Income Tax	30,292	179,765	789,532	41,337
Income Tax (Benefit) Expense	(31,102)	57,958	182,592	10,536
Income From Continuing Operations	61,394	121,807	606,940	30,801
Income From Discontinued Operations, net	0	47,703	0	99,743
Net Income	61,394	169,510	606,940	130,544
Less: Net Income Attributable to Noncontrolling Interest	19,380	0	37,363	0
Net Income	42,014	169,510	569,577	130,544
Natural Gas, NGLs and Oil Revenue [Member]
Revenues and Other Operating Income:
Revenue from Contracts with Customers	334,517	260,306	740,140	578,069
Purchased Gas Revenue [Member]
Revenues and Other Operating Income:
Revenue from Contracts with Customers	9,930	10,316	27,985	19,294
Midstream Revenue [Member]
Revenues and Other Operating Income:
Revenue from Contracts with Customers	23,483	0	49,737	0
Natural Gas, Gathering, Transportation, Marketing and Processing [Member]
Operating Expense
Total Operating Expense	75,767	86,599	162,028	180,931
Oil and Gas, Exploration and Production [Member]
Operating Expense
Total Operating Expense	$ 3,699	$ 19,717	$ 6,079	$ 29,502

Consolidated Statements of Inc3

Consolidated Statements of Income (unaudited) Earnings Per Share - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share, Basic [Abstract]
Income from Continuing Operations (in usd per share)	$ 0.19	$ 0.53	$ 2.60	$ 0.13
Income from Discontinued Operations (in usd per share)	0	0.21	0	0.44
Total Basic (in usd per share)	0.19	0.74	2.60	0.57
Dilutive
Income from Continuing Operations (in usd per share)	0.19	0.52	2.57	0.13
Income from Discontinued Operations (in usd per share)	0	0.21	0	0.43
Total Dilutive (in usd per share)	0.19	0.73	2.57	0.56
Dividends Declared Per Share (in usd per share)	$ 0	$ 0	$ 0	$ 0

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net Income	$ 61,394	$ 169,510	$ 606,940	$ 130,544
Other Comprehensive Income:
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($687), ($2,034), ($781), ($4,086))	1,812	3,464	1,982	6,966
Comprehensive Income	63,206	172,974	608,922	137,510
Less: Comprehensive Income Attributable to Noncontrolling Interest	19,380	0	37,363	0
Comprehensive Income Attributable to CNX Resources Shareholders	$ 43,826	$ 172,974	$ 571,559	$ 137,510

Consolidated Statements of Com5

Consolidated Statements of Comprehensive Income (Parentheticals) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Other comprehensive income, tax expense			$ (781)
Adjustment For Actuarially Determined Liabilities [Member]
Other comprehensive income, tax expense	$ (687)	$ (2,034)	$ (781)	$ (4,086)

Consolidated Balance Sheets (un

Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current Assets:
Cash and Cash Equivalents	$ 54,846	$ 509,167
Accounts and Notes Receivable:
Trade	132,016	156,817
Other Receivables	17,421	48,908
Supplies Inventories	10,499	10,742
Recoverable Income Taxes	27,780	31,523
Prepaid Expenses	56,431	95,347
Current Assets Held for Sale	20,153	0
Total Current Assets	319,146	852,504
Property, Plant and Equipment:
Property, Plant and Equipment	8,941,426	9,316,495
Less—Accumulated Depreciation, Depletion and Amortization	2,399,555	3,526,742
Property, Plant and Equipment of Assets Held for Sale, Net	230,593	0
Total Property, Plant and Equipment—Net	6,772,464	5,789,753
Other Assets:
Investment in Affiliates	22,347	197,921
Goodwill	796,359	0
Other Intangible Assets	106,476	0
Other	190,966	91,735
Total Other Assets	1,116,148	289,656
TOTAL ASSETS	8,207,758	6,931,913
Current Liabilities:
Accounts Payable	186,397	211,161
Current Portion of Long-Term Debt	6,915	7,111
Other Accrued Liabilities	227,871	223,407
Current Liabilities Held for Sale	53,808	0
Total Current Liabilities	474,991	441,679
Long-Term Debt:
Long-Term Debt	2,330,780	2,187,026
Capital Lease Obligations	16,846	20,347
Total Long-Term Debt	2,347,626	2,207,373
Deferred Credits and Other Liabilities:
Deferred Income Taxes	235,407	44,373
Asset Retirement Obligations	7,606	198,768
Other	103,205	139,821
Total Deferred Credits and Other Liabilities	346,218	382,962
TOTAL LIABILITIES	3,168,835	3,032,014
Stockholders’ Equity:
Common Stock, $.01 Par Value; 500,000,000 Shares Authorized, 213,420,535 Issued and Outstanding at June 30, 2018; 223,743,322 Issued and Outstanding at December 31, 2017	2,138	2,241
Capital in Excess of Par Value	2,372,650	2,450,323
Preferred Stock, 15,000,000 shares authorized, None issued and outstanding	0	0
Retained Earnings	1,940,507	1,455,811
Accumulated Other Comprehensive Loss	(6,494)	(8,476)
Total CNX Resources Stockholders’ Equity	4,308,801	3,899,899
Noncontrolling Interest	730,122	0
TOTAL STOCKHOLDERS' EQUITY	5,038,923	3,899,899
TOTAL LIABILITIES AND EQUITY	$ 8,207,758	$ 6,931,913

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - $ / shares	Jun. 30, 2018	Dec. 31, 2017
Common Stock [Member]
Common Stock, Par Value (in usd per share)	$ 0.01	$ 0.01
Common Stock, Authorized (in shares)	500,000,000	500,000,000
Common Stock, Issued (in shares)	213,420,535	223,743,322
Common Stock, Outstanding (in shares)	213,420,535	223,743,322
Common Stock in Treasury (in shares)	0	0
Preferred Stock [Member]
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 (unaudited) - 6 months ended Jun. 30, 2018 - USD ($) $ in Thousands	Total	Common Stock [Member]	Capital in Excess of Par Value [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Total CNX Resources Corporation Stockholders' Equity [Member]	Noncontrolling Interest [Member]
Beginning Balance at Dec. 31, 2017	$ 3,899,899	$ 2,241	$ 2,450,323	$ 1,455,811	$ (8,476)	$ 3,899,899	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	606,940			569,577		569,577	37,363
Other Comprehensive Income (Net of ($781) Tax)	1,982				1,982	1,982
Comprehensive Income	608,922			569,577	1,982	571,559	37,363
Issuance of Common Stock	1,563	7	1,556			1,563
Purchase and Retirement of Common Stock (11,086,082 shares)	(168,719)	(110)	(88,578)	(80,031)		(168,719)
Shares Withheld for Taxes	(5,197)			(4,850)		(4,850)	(347)
Acquisition of CNX Gathering, LLC	718,577						718,577
Amortization of Stock-Based Compensation Awards	10,618		9,349			9,349	1,269
Distributions to CNXM Noncontrolling Interest Holders	(26,740)						(26,740)
Ending Balance at Jun. 30, 2018	$ 5,038,923	$ 2,138	$ 2,372,650	$ 1,940,507	$ (6,494)	$ 4,308,801	$ 730,122

Consolidated Statements of Sto9

Consolidated Statements of Stockholders' Equity (Parenthetical) $ in Thousands	6 Months Ended
	Jun. 30, 2018USD ($)shares
Statement of Stockholders' Equity [Abstract]
Other comprehensive income, tax expense | $	$ (781)
Purchase and retirement of common stock (in shares) | shares	11,086,082

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Operating Activities:
Net Income	$ 606,940	$ 130,544
Adjustments to Reconcile Net Income to Net Cash Provided By Operating Activities:
Net Income from Discontinued Operations	0	(99,743)
Depreciation, Depletion and Amortization	243,754	187,318
Amortization of Deferred Financing Costs	4,821	0
Impairment of Exploration and Production Properties	0	137,865
Impairment of Other Intangible Assets	18,650	0
Stock-Based Compensation	10,618	7,917
Gain on Sale of Assets	(14,622)	(138,577)
Gain on Previously Held Equity Interest	(623,663)	0
Loss (Gain) on Debt Extinguishment	39,048	(786)
(Gain) Loss on Commodity Derivative Instruments	(60,747)	(61,325)
Net Cash Paid in Settlement of Commodity Derivative Instruments	(307)	(79,388)
Deferred Income Taxes	190,194	10,536
Equity in Earnings of Affiliates	(3,447)	(22,385)
Changes in Operating Assets:
Accounts and Notes Receivable	44,156	6,661
Recoverable Income Taxes	3,743	6,492
Supplies Inventories	243	328
Prepaid Expenses	1,327	6,480
Changes in Operating Liabilities:
Accounts Payable	(3,198)	20,813
Accrued Interest	(3,358)	795
Other Operating Liabilities	1,504	699
Changes in Other Liabilities	(5,374)	13,516
Other	648	44,572
Net Cash Provided by Continuing Operating Activities	450,930	172,332
Net Cash Provided by Discontinued Operating Activities	0	128,140
Net Cash Provided by Operating Activities	450,930	300,472
Cash Flows from Investing Activities:
Capital Expenditures	(496,659)	(249,962)
CNX Gathering LLC Acquisition, Net of Cash Acquired	(299,272)	0
Proceeds from Asset Sales	153,420	328,167
Net Distributions from Equity Affiliates	3,650	24,700
Net Cash (Used in) Provided by Continuing Investing Activities	(638,861)	102,905
Net Cash Provided by Discontinued Investing Activities	0	(6,380)
Net Cash (Used in) Provided by Investing Activities	(638,861)	96,525
Cash Flows from Financing Activities:
Payments on Miscellaneous Borrowings	(3,748)	(5,973)
Payments on Long-Term Notes	(723,419)	(117,185)
Net Payments on CNXM Revolving Credit Facility	(138,500)	0
Proceeds from CNX Revolving Credit Facility	422,000	0
Proceeds from Issuance of CNXM Senior Notes	394,000	0
Distributions to CNXM Noncontrolling Interest Holders	(26,740)	0
Proceeds from Issuance of Common Stock	1,563	723
Shares Withheld for Taxes	(5,197)	(7,093)
Purchases of Common Stock	(166,720)	0
Debt Repurchase and Financing Fees	(19,629)	(298)
Net Cash Used in Continuing Financing Activities	(266,390)	(129,826)
Net Cash Used in Discontinued Financing Activities	0	(21,935)
Net Cash Used in Financing Activities	(266,390)	(151,761)
Net (Decrease) Increase in Cash and Cash Equivalents	(454,321)	245,236
Cash and Cash Equivalents at Beginning of Period	509,167	46,299
Cash and Cash Equivalents at End of Period	$ 54,846	$ 291,535

Basis of Presentation

Basis of Presentation	6 Months Ended
	Jun. 30, 2018
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, 2018 are not necessarily indicative of the results that may be expected for future periods. The Consolidated Balance Sheet at December 31, 2017 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, 2017 included in CNX Resources Corporation's ("CNX," the "Company," "we," "us," or "our") Annual Report on Form 10-K as filed with the Securities and Exchange Commission on February 7, 2018. Certain amounts in prior periods have been reclassified to conform to the current period presentation. On November 28, 2017, the Company spun-off the coal operations previously held by CNX, which were comprised of the Pennsylvania Mining Complex, Baltimore Marine Terminal, its direct and indirect ownership interest in CONSOL Coal Resources LP, formerly known as CNXC Coal Resources LP, and other related coal assets. The financial position, results of operations and cash flows of the coal operations are reflected as discontinued operations for all periods presented through the date of the spin-off. See Note 5 - Discontinued Operations for further details regarding the spin-off. The Consolidated Balance Sheet at June 30, 2018 reflects the full consolidation of CNX Gathering LLC's assets and liabilities as a result of the acquisition by CNX Gas Company LLC (CNX Gas), an indirect wholly owned subsidiary of CNX of NBL Midstream, LLC's interest on January 3, 2018 (See Note 6 - Acquisitions and Dispositions for more information). The purchase accounting remains preliminary as contemplated by Generally Accepted Accounting Principles (GAAP) and, as a result, there may be upon further review future changes to the value, as well as allocation, of the acquired assets and liabilities, associated amortization expense, goodwill and the gain on the previously held equity interest. These changes may be material.

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Earnings Per Share	EARNINGS PER SHARE: Basic earnings per share are computed by dividing net income attributable to CNX shareholders by the weighted average shares outstanding during the reporting period. Dilutive earnings per share are computed similarly to basic earnings per share, except that the weighted average shares outstanding are increased to include additional shares from stock options, performance stock options, restricted stock units and performance share units, if dilutive. The number of additional shares is calculated by assuming that outstanding stock options and performance share options were exercised, that outstanding restricted stock units and performance share units were released, and that the proceeds from such activities were used to acquire shares of common stock at the average market price during the reporting period. CNX Midstream Partners LP's (CNXM) dilutive units did not have a material impact on the Company's earnings per share calculations for the period from January 3, 2018 through June 30, 2018 . 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, 2018 2017 2018 2017 Antidilutive Options 2,300,785 2,360,197 2,300,785 2,360,197 Antidilutive Restricted Stock Units — 194,071 7,828 190,658 Antidilutive Performance Share Units — 1,284,924 178,189 1,284,924 Antidilutive Performance Stock Options 927,268 802,804 927,268 802,804 3,228,053 4,641,996 3,414,070 4,638,583 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, 2018 2017 2018 2017 Options 73,583 28,838 227,301 90,462 Restricted Stock Units 7,260 221 178,397 334,261 Performance Share Units — — 357,597 560,936 80,843 29,059 763,295 985,659 The computations for basic and dilutive earnings per share are as follows: For the Three Months Ended June 30, For the Six Months Ended June 30, 2018 2017 2018 2017 Income from Continuing Operations $ 61,394 $ 121,807 $ 606,940 $ 30,801 Less: Net Income Attributable to Non-Controlling Interest 19,380 — 37,363 — Net Income from Continuing Operations Attributable to CNX Resources Shareholders $ 42,014 $ 121,807 $ 569,577 $ 30,801 Income from Discontinued Operations — 47,703 — 99,743 Net Income Attributable to CNX Resources Shareholders $ 42,014 $ 169,510 $ 569,577 $ 130,544 Weighted-average shares of common stock outstanding 215,991,490 230,058,422 218,944,422 229,938,462 Effect of dilutive shares 2,938,470 2,139,974 2,701,442 2,286,571 Weighted-average diluted shares of common stock outstanding 218,929,960 232,198,396 221,645,864 232,225,033 Earnings per Share: Basic (Continuing Operations) $ 0.19 $ 0.53 $ 2.60 $ 0.13 Basic (Discontinued Operations) — 0.21 — 0.44 Total Basic $ 0.19 $ 0.74 $ 2.60 $ 0.57 Dilutive (Continuing Operations) $ 0.19 $ 0.52 $ 2.57 $ 0.13 Dilutive (Discontinued Operations) — 0.21 — 0.43 Total Dilutive $ 0.19 $ 0.73 $ 2.57 $ 0.56

Changes in Accumulated Other Co

Changes in Accumulated Other Comprehensive Loss	6 Months Ended
	Jun. 30, 2018
Equity [Abstract]
Changes in Accumulated Other Comprehensive Loss	CHANGES IN ACCUMULATED OTHER COMPREHENSIVE LOSS: Changes in Accumulated Other Comprehensive Loss related to pension obligations, net of tax, were as follows: Balance at December 31, 2017 $ (8,476 ) Other Comprehensive Income before Reclassifications 1,643 Amounts Reclassified from Accumulated Other Comprehensive Loss, net of tax 339 Current Period Other Comprehensive Income 1,982 Balance at June 30, 2018 $ (6,494 ) The following table shows the reclassification of adjustments out of Accumulated Other Comprehensive Loss: For the Three Months Ended June 30, For the Six Months Ended June 30, 2018 2017 2018 2017 Actuarially Determined Long-Term Liability Adjustments* Amortization of Prior Service Costs $ (90 ) $ (749 ) $ (181 ) $ (1,498 ) Recognized Net Actuarial Loss 354 6,247 708 12,550 Total 264 5,498 527 11,052 Less: Tax Benefit 94 2,034 188 4,086 Net of Tax $ 170 $ 3,464 $ 339 $ 6,966 *Excludes amounts related to the remeasurement of the Actuarially Determined Long-Term Liabilities for the three and six months ended June 30, 2018 .

Revenue from Contract with Cust

Revenue from Contract with Customer	6 Months Ended
	Jun. 30, 2018
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer	REVENUE FROM CONTRACTS WITH CUSTOMERS: On January 1, 2018, the Company adopted Accounting Standards Update (ASU) No. 2014-09, Revenue from Contracts with Customers and all the related amendments (“new revenue standard”) using the modified retrospective method, which did not result in any changes to previously reported financial information. The updates related to the new revenue standard were applied only to contracts that were not complete as of January 1, 2018. 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. Nature of Performance Obligations At contract inception, the Company assesses the goods and services promised in its contracts with customers and identifies a performance obligation for each promised good or service that is distinct. To identify the performance obligations, the Company considers all of the goods or services promised in the contract regardless of whether they are explicitly stated or are implied by customary business practices. For natural gas, NGLs 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, NGLs and oil as presented on the accompanying Consolidated Statement of Income represent the Company’s share of revenues net of royalties and excluding revenue interests owned by others. When selling natural gas, NGLs 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. Midstream revenue consists of revenues generated from natural gas gathering activities. 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 represent 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. Transaction price allocated to remaining performance obligations Accounting Standards Codifiation (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 our natural gas, NGLs and oil and purchased gas revenue is short-term in nature with a contract term of one year or less. For those contracts, we have 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 $ 185,984 as of June 30, 2018 . The Company expects to recognize net revenue of $ 55,304 in the next 12 months and $ 42,227 over the following 12 months, with the remainder recognized thereafter. For revenue associated with our midstream contracts, which also have terms greater than one year, we have 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 variable consideration is allocated entirely to a wholly unsatisfied performance obligation. Under our midstream contracts, 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 We record revenue in the month production is delivered to the purchaser. However, settlement statements for certain natural gas and NGL revenue may not be received for 30 to 90 days after the date production is delivered, and as a result, we are required to estimate the amount of production delivered to the purchaser and the price that will be received for the sale of the product. We record the differences between our estimates and the actual amounts received in the month that payment is received from the purchaser. We have existing internal controls for our revenue estimation process and related accruals, and any identified differences between our revenue estimates and actual revenue received historically have not been significant. For the three and six months ended June 30, 2018 and 2017, revenue recognized in the reporting period related to performance obligations satisfied in prior reporting periods was not material. Disaggregation of Revenue The following table is a disaggregation of our revenue by major sources: For the Three Months Ended June 30, For the Six Months Ended June 30, 2018 2017 2018 2017 Revenue from Contracts with Customers Natural Gas Revenue $ 289,294 $ 233,723 $ 636,642 $ 507,270 NGLs Revenue 39,557 21,637 90,441 60,920 Condensate Revenue 4,996 3,885 11,499 8,189 Oil Revenue 670 1,061 1,558 1,690 Total Natural Gas, NGLs and Oil Revenue 334,517 260,306 740,140 578,069 Purchased Gas Revenue 9,930 10,316 27,985 19,294 Midstream Revenue 23,483 — 49,737 — Other Sources of Revenue and Other Operating Income Gain on Commodity Derivative Instruments 25,660 83,788 60,747 61,325 Other Operating Income 8,534 16,658 19,244 32,308 Total Revenue and Other Operating Income $ 402,124 $ 371,068 $ 897,853 $ 690,996 The disaggregated revenue information corresponds with the Company’s segment reporting. Contract balances We invoice customers once our performance obligations have been satisfied, at which point payment is unconditional. Accordingly, our 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 and closing balances of the Company’s receivables related to contracts with customers were $ 156,817 and $ 132,016 , respectively. Included in the opening balance are receivables related to the January 3, 2018 acquisition of $9,353 (see Note 6 - Acquisitions and Dispositions for more information).

Discontinued Operations

Discontinued Operations	6 Months Ended
	Jun. 30, 2018
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	DISCONTINUED OPERATIONS: On November 28, 2017, CNX announced that it had completed the tax-free spin-off of its coal business resulting in two independent, publicly traded companies: (i) a coal company, CONSOL Energy, formerly known as CONSOL Mining Corporation and (ii) CNX, a natural gas exploration and production company. Following the separation, CONSOL Energy and its subsidiaries hold the coal assets previously held by CNX, including its Pennsylvania Mining Complex, Baltimore Marine Terminal, its direct and indirect ownership interest in CONSOL Coal Resources LP, formerly known as CNX Coal Resources LP, and other related coal assets previously held by CNX. As of the close of business on November 28, 2017, CNX's shareholders received one share of CONSOL Energy common stock for every eight shares of CNX's common stock held as of November 15, 2017. The coal business has been reclassified to discontinued operations for all periods presented. The following table details selected financial information for the divested business included within discontinued operations: For the Three Months Ended For the Six Months Ended June 30, 2017 June 30, 2017 Coal Revenue $ 303,707 $ 620,155 Other Outside Sales 14,856 27,742 Freight-Outside Coal 17,763 30,045 Miscellaneous Other Income 8,934 26,330 Gain on Sale of Assets 5,581 13,536 Total Revenue and Other Income $ 350,841 $ 717,808 Total Costs 289,790 605,620 Income From Operations Before Income Taxes $ 61,051 $ 112,188 Income Tax Expense 9,035 2,668 Less: Net Income Attributable to Noncontrolling Interest 4,313 9,777 Income From Discontinued Operations, net $ 47,703 $ 99,743 There were no remaining major classes of assets or liabilities of discontinued operations at June 30, 2018 and December 31, 2017 .

Acquisitions and Dispositions

Acquisitions and Dispositions	6 Months Ended
	Jun. 30, 2018
Business Combinations [Abstract]
Acquisitions And Dispositions	ACQUISITIONS AND DISPOSITIONS: On May 2, 2018 CNX closed on an Asset Exchange Agreement (the “AEA”), with HG Energy II Appalachia, LLC (“HG Energy”), pursuant to which, among other things, HG Energy (i) paid to CNX approximately $7,000 and (ii) assigned to CNX certain undeveloped Marcellus and Utica acreage in Southwest Pennsylvania, in exchange for CNX (x) assigning its interest in certain non-core midstream assets and surface acreage and (y) releasing certain HG Energy oil and gas acreage from dedication under a gathering agreement that is partially held, indirectly, by CNX. In connection with the transaction, CNX also agreed to certain transactions with CNXM, including the amendment of the existing gas gathering agreement between CNX and CNXM to increase the existing well commitment by an additional forty wells. The net gain on the sale was $286 and is included in the Gain on Asset Sales line of the Consolidated Statements of Income. As a result of the AEA, CNX determined that the carrying value of a portion of the customer relationship intangible assets that were acquired in connection with the Midstream acquisition discussed below (see also Note 19 - Goodwill and Other Intangible Assets) exceeded their fair value, and recognized an impairment of approximately $18,650 which is included in the Impairment of Other Intangible Assets line of the Consolidated Statements of Income. On March 30, 2018, CNX Gas completed the sale of substantially all of its shallow oil and gas assets and certain Coalbed Methane (CBM) assets in Pennsylvania and West Virginia for $89,296 in cash consideration. In connection with the sale, the buyer assumed approximately $196,514 of asset retirement obligations. The net gain on the sale was $4,751 and is included in the Gain on Asset Sales line of the Consolidated Statements of Income. On December 14, 2017, CNX Gas entered into a purchase agreement with NBL Midstream, LLC (Noble), pursuant to which CNX Gas acquired Noble’s 50% membership interest in CONE Gathering LLC (CNX Gathering), for a cash purchase price of $305,000 and the mutual release of all outstanding claims (the "Midstream Acquisition"). CNX Gathering owns a 100% membership interest in CONE Midstream GP LLC (the general partner), which is the general partner of CONE Midstream Partners LP (CNXM or the Partnership), which is a publicly traded master limited partnership formed in May 2014 by CNX Gas and Noble. In conjunction with the Midstream Acquisition, which closed on January 3, 2018, the general partner, the Partnership and CONE Gathering LLC changed their names to CNX Midstream GP LLC, CNX Midstream Partners LP, and CNX Gathering LLC, respectively. Prior to the Midstream Acquisition, the Company accounted for its 50% interest in CNX Gathering LLC 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 LLC and, through CNX Gathering's ownership of the general partner, control over the Partnership. Accordingly, the Midstream Acquisition has been 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 such business combination achieved in stages (or step acquisition), previously held equity interests are remeasured at fair value and any difference between the fair value and the carrying value of the equity interest held be recognized as a gain or loss on the statement of income. The fair value assigned to the previously held equity interest in CNX Gathering and CNXM for purposes of calculating the gain or loss was $799,033 and was determined using the income approach, based on a discounted cash flow methodology. The resulting gain on remeasurement to fair value of the previously held equity interest in CNX Gathering and CNXM of $623,663 is included in the Gain on Previously Held Equity Interest line of the Consolidated Statements of Income. The fair values of the previously held equity interests were based on inputs that are not observable in the market and therefore represent Level 3 inputs (See Note 14 - Fair Value of Financial Instruments). These fair values were measured using valuation techniques that convert future cash flows into a single discounted amount. Significant inputs to the valuation included estimates of: (i) gathering volumes; (ii) future operating costs; and (iii) a market-based weighted average cost of capital. These inputs required significant judgments and estimates by management, are still under review, and are subject to change. These inputs have a significant impact on the valuation of the previously held equity interests and future changes may occur. The estimated fair value of midstream facilities and equipment, generally consisting of pipeline systems and compression stations, were estimated using the cost approach. Significant unobservable inputs in the estimate of fair value include management's assumptions about the replacement costs for similar assets, the relative age of the acquired assets and any potential economic or functional obsolescence associated with the acquired assets. As a result, the estimated fair value of the midstream facilities and equipment represents a Level 3 fair value measurement. As part of the preliminary purchase price allocation, the Company identified intangible assets for customer relationships with third party customers. The fair value of the identified intangible assets was determined using the income approach which requires a forecast of the expected future cash flows generated and an estimated market-based weighted average cost of capital. Significant unobservable inputs in the determination of fair value include future revenue estimates, future cost assumptions, and estimated customer retention rates. As a result, the estimated fair value of the identified intangible assets represents a Level 3 fair value measurement. Differences between the preliminary purchase price allocation and the final purchase price allocation may change the amount of intangible assets and goodwill ultimately recognized in conjunction with the Midstream Acquisition. The noncontrolling interest in the acquired business is comprised of the limited partner units in CNXM, which were not acquired by the Company. The CNXM limited partner units are actively traded on the New York Stock Exchange, and were valued based on observable market prices as of the transaction date and therefore represent a Level 1 fair value measurement. Allocation of Purchase Price (Midstream Acquisition) The following table summarizes the purchase price and estimated values of assets and liabilities assumed based on the fair value as of January 3, 2018, with any excess of the purchase price over the estimated fair value of the identified net assets acquired recorded as goodwill. The preliminary purchase price allocation will be subject to further refinement, which may result in material changes. Estimated Fair Value of Consideration Transferred: Cash Consideration $ 305,000 CNX Gathering Cash on Hand at January 3, 2018 Distributed to Noble 2,620 Fair Value of Previously Held Equity Interest 799,033 Total Estimated Fair Value of Consideration Transferred $ 1,106,653 The following is a summary of the preliminary estimated fair values of the net assets acquired: Fair Value of Assets Acquired: Cash and Cash Equivalents $ 8,348 Accounts and Notes Receivable 21,199 Prepaid Expense 2,006 Other Current Assets 163 Property, Plant and Equipment, Net 1,043,340 Intangible Assets 128,781 Other 593 Total Assets Acquired 1,204,430 Fair Value of Liabilities Assumed: Accounts Payable 26,059 CNXM Revolving Credit Facility 149,500 Total Liabilities Assumed 175,559 Total Identifiable Net Assets 1,028,871 Fair Value of Noncontrolling Interest in CNXM (718,577 ) Goodwill 796,359 Net Assets Acquired $ 1,106,653 Post-Acquisition Operating Results (Midstream Acquisition) The Midstream Acquisition contributed the following to the Company's Midstream segment for the three and six months ended June 30, 2018. Three Months Ended Six Months Ended June 30, 2018 June 30, 2018 Midstream Revenue $ 61,325 $ 125,503 Earnings From Continuing Operations Before Income Tax $ 27,795 $ 63,329 Unaudited Pro Forma Information (Midstream Acquisition) The following table presents unaudited pro forma combined financial information for the three and six months ended June 30, 2017, which presents the Company’s results as though the Midstream Acquisition had been completed at January 1, 2017. The pro forma combined financial information has been included for comparative purposes and is not necessarily indicative of the results that might have actually occurred had the acquisition been completed at January 1, 2017; furthermore, the financial information is not intended to be a projection of future results. Pro Forma (in thousands, except per share data) (unaudited) Three Months Ended June 30, 2017 Six Months Ended June 30, 2017 Pro Forma Total Revenue and Other Operating Income $ 395,774 $ 740,411 Pro Forma Net Income from Continuing Operations $ 150,789 $ 92,979 Less: Pro Forma Net income Attributable to Noncontrolling Interests $ 18,720 $ 38,134 Pro Forma Net Income from Continuing Operations Attributable to CNX $ 132,069 $ 54,845 Pro Forma Income per Share from Continuing Operations (Basic) $ 0.58 $ 0.24 Pro Forma Income per Share from Continuing Operations (Diluted) $ 0.58 $ 0.24

Components of Pension Plan Net

Components of Pension Plan Net Periodic Benefit Cost	6 Months Ended
	Jun. 30, 2018
Retirement Benefits [Abstract]
Components of Pension Plan Net Periodic Benefit Cost	COMPONENTS OF PENSION PLAN NET PERIODIC BENEFIT COST: Components of Net Periodic Benefit Cost are as follows: For the Three Months Ended June 30, For the Six Months Ended June 30, 2018 2017 2018 2017 Service Cost $ 96 $ 149 $ 193 $ 193 Interest Cost 300 476 600 619 Amortization of Prior Service Credits (90 ) (143 ) (181 ) (186 ) Recognized Net Actuarial Loss 373 604 746 786 Curtailment Gain (416 ) — (416 ) — Net Periodic Benefit Cost $ 263 $ 1,086 $ 942 $ 1,412 During June 2018, a plan amendment was announced that freezes the benefits for the Defined Contribution Restoration Plan effective July 1, 2018. Employees hired after this date will not be eligible for this benefit plan. In addition, current participants will receive no further compensation credits after that date, with the last award year being 2017. Annual interest credits will continue to be made in accordance with the terms of the plan. This amendment triggered a curtailment gain of $416 . The curtailment resulted in a plan remeasurement, decreasing the plan liabilities by $2,235 at June 30, 2018.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES: The effective tax rates for the three and six months ended June 30, 2018 were (102.7)% and 23.1% , respectively. The effective tax rate for the six months ended June 30, 2018 differs from the U.S. federal statutory rate of 21% primarily due to a benefit from the filing of a Federal 10-year net operating loss ("NOL") carryback which resulted in the Company being able to utilize previously valued tax attributes at a tax rate differential of 14%, as well as non-controlling interest. The benefits were partially offset by increases for both state income taxes and state valuation allowances. The effective tax rates for the three and six months ended June 30, 2017 were 32.2% and 25.5% , respectively. The effective rate for the six months ended June 30, 2017 differs from the U.S. federal statutory rate of 35% primarily due to state income taxes and equity compensation. On December 22, 2017, the United States enacted the Tax Cuts and Jobs Act (the "Act") which, among other things, lowered the U.S. Federal corporate income tax rate from 35% to 21%, repealed the corporate alternative minimum tax ("AMT"), and provided for a refund of previously accrued AMT credits. The Company recorded a net tax benefit to reflect the impact of the Act as of December 31, 2017, as it is required to reflect the change in the period in which the law is enacted. Largely, the benefits recorded in the period ending December 31, 2017 related to the Act are in recognition of the revaluation of deferred tax assets and liabilities, a benefit of $115,291 , and a benefit for the reversal of a valuation allowance previously recorded against a deferred tax asset for AMT credits which are now refundable, a benefit of $154,384 . The net benefits for the Act, as recorded as provisional amounts, as of June 30, 2018 represent the Company's best estimate using information available to the Company as of June 30, 2018 . The Company anticipates U.S. regulatory agencies will issue further regulations over the next year which may alter this estimate. The Company is still evaluating, among other things, the application of limitations for executive compensation related to contracts existing prior to November 2, 2017, and provisions in the Act addressing the deductibility of interest expense after January 1, 2018. The Company will refine its estimates to incorporate new or better information as it comes available through the filing date of its 2017 U.S. income tax returns in the fourth quarter of 2018. During the second quarter, the company filed a Federal NOL carryback resulting in a financial statement benefit of $ 20,000 through the realization of the Federal NOLs at a 35% tax rate as a carryback versus the current 21% tax rate as a carryforward. The total amount of uncertain tax positions at June 30, 2018 and December 31, 2017 were $39,953 and $37,813 , respectively. If these uncertain tax positions were recognized, approximately $31,516 and $29,376 would affect CNX's effective tax rate at June 30, 2018 and December 31, 2017 , respectively. There was a $2,140 change to the unrecognized tax benefits during the six months ended June 30, 2018 . CNX recognizes accrued interest related to uncertain tax positions in interest expense. As of June 30, 2018 and December 31, 2017 , the Company reported an accrued interest liability relating to uncertain tax positions of $814 and $644 , respectively, in Other Liabilities on the Consolidated Balance Sheets. The accrued interest liability includes $169 of accrued interest expense that is reflected in the Company's Consolidated Statements of Income for the six months ended June 30, 2018 . CNX recognizes penalties accrued related to uncertain tax positions in its income tax expense. As of June 30, 2018 and December 31, 2017 , CNX had no accrued liabilities for tax 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 and Canadian jurisdictions. 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 years before 2014. The Joint Committee on Taxation concluded its review of the audit of tax year 2015 on March 21, 2018. The audit resulted in a $108,651 reduction to CNX's net operating loss, primarily due to a reduction in the depreciation as an offset to the bonus depreciation taken in the 2010-2013 IRS audit. There was no cash impact from the audit.

Property, Plant and Equipment

Property, Plant and Equipment	6 Months Ended
	Jun. 30, 2018
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	PROPERTY, PLANT AND EQUIPMENT: June 30, December 31, Property, Plant and Equipment Intangible drilling cost $ 3,772,658 $ 3,849,689 Proved gas properties 937,243 1,999,891 Gas gathering equipment 2,017,836 1,182,234 Unproved gas properties 1,093,985 919,733 Gas wells and related equipment 743,752 834,120 Surface land and other equipment 309,894 309,602 Other gas assets 66,058 221,226 Total Property, Plant and Equipment 8,941,426 9,316,495 Less: Accumulated Depreciation, Depletion and Amortization 2,399,555 3,526,742 Total Property, Plant and Equipment Assets Held for Sale - Net 230,593 — Total Property, Plant and Equipment - Net $ 6,772,464 $ 5,789,753 Property, Plant and Equipment Held for Sale CNX is party to an industry participation agreement (referred to as a "joint venture" or "JV") that provided drilling and completion carries for the Company's retained interests. This joint development agreement is with Hess Ohio Developments, LLC (Hess) with respect to approximately 125 thousand net Utica Shale acres in Ohio in which each party has a 50% undivided interest. Under the agreement, as amended, Hess was obligated to pay a total of approximately $335,000 in the form of a 50% drilling carry of certain CNX working interest obligations as the acreage is developed. As of December 31, 2016, Hess' entire carry obligation had been satisfied. In June 2018, the Company entered into an agreement to sell substantially all of its Ohio Utica joint venture ("JV") assets in the wet gas Utica Shale areas of Belmont, Guernsey, Harrison, and Noble counties, which includes approximately 26,000 net undeveloped acres for net cash proceeds of approximately $400,000 . CNX received a deposit from the seller of approximately $40,000 in the second quarter, which was included in Assets Held for Sale on the Consolidated Balance Sheet and Proceeds from Asset Sales within the Consolidated Statements of Cash Flow. As part of the required evaluation under the held for sale accounting guidance, the Company determined that the approximate fair value less costs to sell exceeded the carrying value of the net assets and thus no impairment charge was recorded. The Company anticipates completing the sale of these assets during the third quarter of 2018. Property, Plant and Equipment Impairment In February 2017, the Company approved a plan to sell subsidiaries Knox Energy LLC and Coalfield Pipeline Company (collectively, "Knox"). Knox met all of the criteria to be classified as held for sale in February 2017. The potential disposal of Knox did not represent a strategic shift that would have a major effect on the Company's operations and financial results and was, therefore, not classified as discontinued operations in accordance with ASU 2014-08, Presentation of Financial Statements (Topic 205) and Property, Plant and Equipment (Topic 360). As part of the required evaluation under the held for sale guidance, the asset's book value was evaluated and adjusted to the lower of its carrying amount or fair value less cost to sell. The Company determined that the approximate fair value less costs to sell Knox was less than the carrying value of the net assets which resulted in an impairment of $137,865 in February 2017, included in Impairment of Exploration and Production Properties within the Consolidated Statements of Income. The sale of Knox closed in the second quarter of 2017.

Revolving Credit Facilities

Revolving Credit Facilities	6 Months Ended
	Jun. 30, 2018
Short-term Debt, Other Disclosures [Abstract]
Revolving Credit Facilities	REVOLVING CREDIT FACILITIES: CNX Resources Corporation (CNX) On March 8, 2018, CNX amended and restated its senior secured revolving credit facility, which expires on March 8, 2023. The amended and restated credit facility increased lenders' commitments from $ 1,500,000 to $ 2,100,000 with an accordion feature that allows the Company to increase the commitments to $ 3,000,000 . The initial borrowing base increased from $ 2,000,000 to $ 2,500,000 , and the letters of credit aggregate sub-limit remained unchanged at $ 650,000 . The credit facility matures on March 8, 2023, provided that if the aggregate principal amount of our existing 5.875% Senior Notes due 2022, 8.00% Senior Notes due 2023 and certain other publicly traded debt securities outstanding 91 days prior to the earliest maturity of such debt (such date, the "Springing Maturity Date") is greater than $ 500,000 , then the credit facility will mature on the Springing Maturity Date. The facility is secured by substantially all of the assets of CNX and certain of its subsidiaries. Fees and interest rate spreads are based on the percentage of facility utilization, measured quarterly. Availability under the facility is limited to a borrowing base, which is determined by the lenders' syndication agent and approved by the required number of lenders in good faith by calculating a value of CNX's proved natural gas reserves. The facility contains a number of affirmative and negative covenants that include, among others, covenants 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 and amend the senior unsecured notes. The Company must also mortgage 80% of the value of its proved reserves and 80% 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 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, to current liabilities, excluding borrowings under the revolver, measured quarterly. The calculation of all of the ratios exclude CNXM. CNX was in compliance with all financial covenants as of June 30, 2018 . At June 30, 2018 , the $2,100,000 facility had $ 422,000 of borrowings outstanding and $ 251,342 of letters of credit outstanding, leaving $ 1,426,658 of unused capacity. At December 31, 2017 , the $ 1,500,000 facility had no borrowings outstanding and $ 239,072 of letters of credit outstanding, leaving $ 1,260,928 of unused capacity. CNX Midstream Partners LP (CNXM) On March 8, 2018, CNXM entered into a new $600,000 senior secured revolving credit facility that matures on March 8, 2023. The new revolving credit facility replaced its prior $250,000 senior secured revolving credit facility. The facility includes restrictions on the ability of CNXM, its subsidiary guarantors and certain of its non-guarantor, non-wholly-owned subsidiaries, except in certain circumstances, to: (i) create, incur, assume or suffer to exist indebtedness; (ii) create or permit to exist liens on their properties; (iii) prepay certain indebtedness unless there is no default or event of default under the facility; (iv) make or pay any dividends or distributions in excess of certain amounts; (v) merge with or into another person, liquidate or dissolve; or acquire all or substantially all of the assets of any going concern or going line of business or acquire all or a substantial portion of another person’s assets; (vi) make particular investments and loans; (vii) sell, transfer, convey, assign or dispose of its assets or properties other than in the ordinary course of business and other select instances; (viii) deal with any affiliate except in the ordinary course of business on terms no less favorable to CNXM than it would otherwise receive in an arm’s length transaction; (ix) amend in any material manner its certificate of incorporation, bylaws, or other organizational documents without giving prior notice to the lenders and, in some cases, obtaining the consent of the lenders. In addition, CNXM is obligated to maintain at the end of each fiscal quarter (x) a maximum total leverage ratio of no greater than between 4.75 to 1.00 ranging to no greater than 5.50 to 1.00 in certain circumstances; (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, 2018 . The 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 facility are secured by substantially all of the assets of CNXM and its wholly-owned subsidiaries. CNX is not a guarantor under the facility. At June 30, 2018, the $600,000 facility had $11,000 of borrowings outstanding.

Long-Term Debt

Long-Term Debt	6 Months Ended
	Jun. 30, 2018
Long-term Debt, Other Disclosures [Abstract]
Long-term Debt	LONG-TERM DEBT: June 30, December 31, Debt: Senior Notes due April 2022 at 5.875% (Principal of $1,314,307 and $1,705,682 $ 1,316,723 $ 1,709,226 CNX Revolving Credit Facility 422,000 — CNX Midstream Partners LP Senior Notes due March 2026 at 6.50% (Principal of $400,000 less Unamortized Discount of $5,750 at June 30, 2018) 394,250 — Senior Notes due April 2023 at 8.00% (Principal of $200,000 and $500,000 less Unamortized Discount of $1,720 and $4,751, respectively) 198,281 495,249 CNX Midstream Partners LP Revolving Credit Facility 11,000 — Other Note Maturing in 2018 (Principal of $358 less Unamortized Discount of $8 at December 31, 2017) — 350 Less: Unamortized Debt Issuance Costs 11,474 17,536 2,330,780 2,187,289 Less: Amounts Due in One Year* — 263 Long-Term Debt $ 2,330,780 $ 2,187,026 * Excludes current portion of Capital Lease Obligations of $6,915 and $ 6,848 at June 30, 2018 and December 31, 2017 , respectively. During the six months ended June 30, 2018 , CNXM completed a private offering of $ 400,000 of 6.50% senior notes due in March 2026 less $ 6,000 of unamortized bond discount. CNX is not a guarantor of CNXM's 6.50% senior notes due in March 2026 or CNXM's senior secured revolving credit facility. During the six months ended June 30, 2018 , CNX purchased $391,375 of its outstanding 5.875% senior notes due in April 2022. As part of this transaction, a loss of $ 15,635 was included in Loss (Gain) on Debt Extinguishment on the Consolidated Statements of Income. During the three and six months ended June 30, 2018 , CNX purchased $300,000 of its outstanding 8.00% senior notes due in April 2023. As part of this transaction, a loss of $23,413 was included in Loss (Gain) on Debt Extinguishment on the Consolidated Statements of Income. During the three and six months ended June 30, 2017 , CNX purchased $19,069 and $119,025 , respectively, of its outstanding 5.875% senior notes due in 2022. As part of this transaction, a loss of $36 and a gain of $786 , respectively, were included in Loss (Gain) on Debt Extinguishment on the Consolidated Statements of Income.

Commitments and Contingent Liab

Commitments and Contingent Liabilities	6 Months Ended
	Jun. 30, 2018
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, wrongful death, damage to property, exposure to hazardous substances, governmental regulations including environmental remediation, employment and contract disputes and other claims and actions arising out of the normal course of business. 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 amount claimed against CNX is disclosed below when an amount is expressly stated in the lawsuit or claim, which is not often the case. The following lawsuits and claims include those for which a loss is probable and an accrual has been recognized: Hale Litigation: This class action lawsuit was filed on September 23, 2010 in the U.S. District Court in Abingdon, Virginia. The putative class consists of force-pooled unleased gas owners whose ownership of the coalbed methane (CBM) gas was declared to be in conflict with rights of others. The lawsuit seeks a judicial declaration of ownership of the CBM and damages based on allegations that CNX Gas failed either to pay royalties due to conflicting claimants or deemed lessors, or paid them less than required because of the alleged practice of improper below market sales and/or taking alleged improper post-production deductions. On September 30, 2013, the District Judge entered an Order certifying the class, and CNX Gas appealed the Order to the U.S. Fourth Circuit Court of Appeals. On August 19, 2014, the Fourth Circuit agreed with CNX Gas, reversed the Order certifying the class and remanded the case to the trial court for further proceedings consistent with the decision. On April 23, 2015, Plaintiffs filed a Renewed Motion for Class Certification, which CNX opposed. On March 29, 2017, the Court issued an Order certifying four issues for class treatment: (1) allegedly excessive deductions; (2) royalties based on purported improperly low prices; (3) deduction of severance taxes; and (4) Plaintiffs' request for an accounting. On April 13, 2017, CNX filed a Petition for Allowance of Appeal with the Fourth Circuit, and on May 22, 2017 the Petition was denied. CNX and plaintiffs’ counsel have reached an agreement in principal to settle the certified class claims. On March 20, 2018, the Court preliminarily approved the class settlement, and on August 23, 2018, the Court will conduct a hearing to consider final approval of the proposed Settlement Agreement and Class Counsels’ request for attorneys’ fees. No class member has opted out of, or objected to, the settlement and the time for doing so has passed. The Company has paid the settlement into an escrow account from which it will be disbursed upon final court approval (or returned to CNX). At June 30, 2018 , 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 table. 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 these commitments will expire without being funded, and therefore will not have a material adverse effect on financial condition. Amount of Commitment Expiration Per Period Total Amounts Committed Less Than 1 Year 1-3 Years 3-5 Years Beyond 5 Years Letters of Credit: Firm Transportation $ 251,057 $ 251,057 $ — $ — $ — Other 285 285 — — — Total Letters of Credit 251,342 251,342 — — — Surety Bonds: Employee-Related 1,850 1,850 — — — Environmental 25,973 25,914 59 — — Other 12,315 10,805 1,510 — — Total Surety Bonds 40,138 38,569 1,569 — — Total Commitments $ 291,480 $ 289,911 $ 1,569 $ — $ — Excluded from the above table are commitments and guarantees, that relate to discontinued operations, entered into in conjunction with the spin-off of the Company's coal business (See Note 5 - Discontinued Operations). Although CONSOL Energy has agreed to indemnify us to the extent that we are called upon to pay any of these liabilities, there is no assurance that CONSOL Energy will satisfy its obligations to indemnify us in these situations. CNX uses various leased facilities and equipment in its operations. Future minimum lease payments under operating leases at June 30, 2018 are as follows: Operating Lease Obligations Due Amount Less than 1 year $ 9,607 1 - 3 years 13,325 3 - 5 years 10,756 More than 5 years 38,477 Total Operating Lease Obligations $ 72,165 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 on the Consolidated Balance Sheets. As of June 30, 2018 , the purchase obligations for each of the next five years and beyond were as follows: Obligations Due Amount Less than 1 year $ 207,148 1 - 3 years 419,091 3 - 5 years 306,479 More than 5 years 620,806 Total Purchase Obligations $ 1,553,524

Derivative Instruments

Derivative Instruments	6 Months Ended
	Jun. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments:	DERIVATIVE INSTRUMENTS: CNX enters into financial derivative instruments to manage its exposure to commodity price volatility. These natural gas and NGL 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 on 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 production of CNX's derivative instruments at June 30, 2018 and December 31, 2017 were as follows: June 30, December 31, Forecasted to 2018 2017 Settle Through Natural Gas Commodity Swaps (Bcf) 1,064.1 1,067.2 2023 Natural Gas Basis Swaps (Bcf) 775.5 688.1 2023 The gross fair value of CNX's derivative instruments at June 30, 2018 and December 31, 2017 was as follows: Asset Derivative Instruments Liability Derivative Instruments June 30, December 31, June 30, December 31, 2018 2017 2018 2017 Commodity Swaps: Prepaid Expense $ 27,226 $ 62,369 Other Accrued Liabilities $ 26,943 $ 5,985 Other Assets 132,594 59,281 Other Liabilities 10,381 42,419 Total Asset $ 159,820 $ 121,650 Total Liability $ 37,324 $ 48,404 Basis Only Swaps: Prepaid Expense $ 10,932 $ 14,965 Other Accrued Liabilities $ 26,969 $ 35,306 Other Assets 35,101 24,223 Other Liabilities 20,557 17,179 Total Asset $ 46,033 $ 39,188 Total Liability $ 47,526 $ 52,485 The effect of 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, 2018 2017 2018 2017 Cash Received (Paid) in Settlement of Commodity Derivative Instruments: Commodity Swaps: Natural Gas $ 17,058 $ (15,509 ) $ 16,624 $ (40,116 ) Propane — — — (1,216 ) Natural Gas Basis Swaps (374 ) (16,776 ) (16,931 ) (38,056 ) Total Cash Received (Paid) in Settlement of Commodity Derivative Instruments 16,684 (32,285 ) (307 ) (79,388 ) Unrealized Gain (Loss) on Commodity Derivative Instruments: Commodity Swaps: Natural Gas 46,450 70,282 49,250 232,886 Propane — — — 1,147 Natural Gas Basis Swaps (37,474 ) 45,791 11,804 (93,320 ) Total Unrealized Gain on Commodity Derivative Instruments 8,976 116,073 61,054 140,713 Gain (Loss) on Commodity Derivative Instruments: Commodity Swaps: Natural Gas 63,508 54,773 65,874 192,770 Propane — — — (69 ) Natural Gas Basis Swaps (37,848 ) 29,015 (5,127 ) (131,376 ) Total Gain on Commodity Derivative Instruments $ 25,660 $ 83,788 $ 60,747 $ 61,325 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 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, 2018
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 One - Quoted prices for identical instruments in active markets. Level Two - 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 Three - 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 instruments measured at fair value on a recurring basis are summarized below: Fair Value Measurements at June 30, 2018 Fair Value Measurements at December 31, 2017 Description (Level 1) (Level 2) (Level 3) (Level 1) (Level 2) (Level 3) Gas Derivatives $ — $ 121,003 $ — $ — $ 59,949 $ — Put Option $ — $ — $ — $ — $ (3,500 ) $ — The following methods and assumptions were used to estimate the fair value for which the fair value option was not elected: Cash and cash equivalents: The carrying amount reported in the Consolidated Balance Sheets for cash and cash equivalents approximates its fair value due to the short-term maturity of these instruments. Long-term debt: The fair value of long-term debt is measured using unadjusted quoted market prices or estimated using discounted cash flow analyses. The discounted cash flow analyses are based on current market rates for instruments with similar cash flows. The carrying amounts and fair values of financial instruments for which the fair value option was not elected are as follows: June 30, 2018 December 31, 2017 Carrying Amount Fair Value Carrying Amount Fair Value Cash and Cash Equivalents $ 54,846 $ 54,846 $ 509,167 $ 509,167 Long-Term Debt $ 2,342,254 $ 2,329,810 $ 2,204,825 $ 2,281,282 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.

Variable Interest Entities

Variable Interest Entities	6 Months Ended
	Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Variable Interest Entities	VARIABLE INTEREST ENTITIES: The Company determined CNXM, of which the company owns approximately 34% , to be a variable interest entity. Upon completion of the Midstream Acquisition (see Note 6 - Acquisitions and Dispositions) through the Company's ownership and control of CNXM's general partner (CNX Midstream GP LLC), the Company has the power to direct the activities that most significantly impact CNXM's economic performance. In addition, through its limited partner interest and incentive distribution rights, or IDRs, in CNXM, the Company has the obligation to absorb the losses of CNXM and the right to receive benefits in accordance with such interests. As the Company has a controlling financial interest and is the primary beneficiary of CNXM, the Company consolidates CNXM commencing January 3, 2018. The risks associated with the operations of CNXM are discussed in its Annual Reports on Form 10-K for the year ended December 31, 2017 filed with the SEC on February 7, 2018. The following table presents amounts included in the Company's Consolidated Balance Sheet that were for the use or obligation of CNXM as of June 30, 2018 : June 30, 2018 Assets: Cash $ 707 Receivables - Related Party 12,072 Receivables - Third Party 7,546 Other Current Assets 2,726 Property, Plant and Equipment, net 792,513 Other Assets 3,494 Total Assets $ 819,058 Liabilities: Accounts Payable $ 38,327 Accounts Payable - Related Party 3,211 Revolving Credit Facility 11,000 Long-Term Debt 393,169 Total Liabilities $ 445,707 The following table summarizes CNXM's Consolidated Statements of Operations and Cash Flows for the three and six months ended June 30, 2018 , inclusive of affiliate amounts: For the Three Months Ended For the Six Months Ended June 30, 2018 June 30, 2018 Revenue Gathering Revenue - Related Party $ 37,576 $ 75,306 Gathering Revenue - Third Party 23,438 49,577 Total Revenue 61,014 124,883 Expenses Operating Expense - Related Party 5,079 9,514 Operating Expense - Third Party 7,406 15,874 General and Administrative Expense - Related Party 3,619 7,232 General and Administrative Expense - Third Party 2,320 4,868 (Gain) Loss on Asset Sales (254 ) 2,501 Depreciation Expense 5,443 11,299 Interest Expense 7,119 9,608 Total Expense 30,732 60,896 Net Income $ 30,282 $ 63,987 Net Cash Provided by Operating Activities $ 53,674 $ 95,541 Net Cash Used in Investing Activities $ (24,969 ) $ (35,125 ) Net Cash Used in Financing Activities $ (29,964 ) $ (62,903 ) In March 2018, CNXM closed its previously announced acquisition of CNX's remaining 95% interest in the gathering system and related assets commonly referred to as the Shirley-Penns System, in exchange for cash consideration in the amount of $265,000 . CNXM funded the cash consideration with proceeds from the issuance of 6.5% senior notes due 2026 (See Note 11 - Long-Term Debt). Prior to the acquisition of Noble's interest on January 3, 2018, CNX accounted for its interests in CNX Gathering and CNXM as an equity-method investment. The following is a summary of the Company's Investment in Affiliates balances included within the Consolidated Balance Sheets associated with CNX Gathering and CNXM, respectively: CNX Gathering CNXM Total Balance at December 31, 2016 $ 151,075 $ 18,133 $ 169,208 Equity in Earnings 9,823 38,523 48,346 Distributions (17,254 ) (24,929 ) (42,183 ) Asset Transfer (2,527 ) 2,527 — Balance at December 31, 2017 $ 141,117 $ 34,254 $ 175,371 The following transactions were included in Other Operating Income and Transportation, Gathering and Compression within the Consolidated Statements of Income: For the Three Months Ended For the Six Months Ended June 30, 2017 June 30, 2017 Other Operating Income: Equity in Earnings of Affiliates - CNX Gathering $ 284 $ 2,150 Equity in Earnings of Affiliates - CNXM $ 9,712 $ 19,784 Transportation, Gathering and Compression: Gathering Services - CNX Gathering $ 232 $ 485 Gathering Services - CNXM $ 31,695 $ 65,749 At June 30, 2018 and December 31, 2017 , CNX had a net payable of $ 9,495 and $ 9,982 respectively due to both CNX Gathering and CNXM, primarily for accrued but unpaid gathering services.

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 2018
Segment Reporting [Abstract]
Segment Information	SEGMENT INFORMATION: CNX consists of two principal business divisions: Exploration and Production (E&P) and Midstream. The principal activity of the E&P Division, which includes four reportable segments, is to produce pipeline quality natural gas for sale primarily to gas wholesalers. The E&P Division's reportable segments are Marcellus Shale, Utica Shale, Coalbed Methane, and Other Gas. The Other Gas Segment is primarily related to 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, exploration and production related other costs, impairment of other intangible assets, as well as various other operating activities assigned to the E&P Division but not allocated to each individual segment. CNX's Midstream Division is the result of CNX's acquisition of NBL Midstream, LLC's interest in CNX Gathering LLC (See Note 6 - Acquisitions and Dispositions). As part of the acquisition, CNX now has a controlling financial interest and is the primary beneficiary of CNXM, through its approximately 34% ownership of the outstanding limited partner interests (See Note 15 - Variable Interest Entities for more information). The principal activity of the Midstream Division is the ownership, operation, development and acquisition of natural gas gathering and other midstream energy assets, of CNX Gathering and CNXM, which provide natural gas gathering services for the Company's produced gas, as well as for other independent third parties in the Marcellus Shale and Utica Shale in Pennsylvania and West Virginia. Excluded from the Midstream Division are the gathering assets and operations of CNX that have not been contributed to CNX Gathering and CNXM. Prior to the acquisition, the Company accounted for its 50% interest in CNX Gathering LLC as an equity method investment. The Company's unallocated expenses include other expense, gain on asset sales related to non-core assets, gain on previously held equity interest, loss on debt extinguishment, impairment of other intangible assets and income taxes. Prior to the spin-off of the coal business in November 2017 (See Note 5 - Discontinued Operations), CNX had a Pennsylvania (PA) Mining Operations division and an Other division. The PA Mining Operations division principal activities consisted of the mining, preparation and marketing of thermal coal to power plants. The Other division included coal terminal operations, closed and idle mine activities, selling, general and administrative activities and various other non-operated activities. In the preparation of the following information, intersegment sales have been recorded at amounts approximating market prices. Operating profit for each segment is based on sales less identifiable operating and non-operating expenses. Assets are reflected at the division level for E&P and are not allocated between each individual E&P segment. These assets are not allocated to each individual segment due to the diverse asset base controlled by CNX, whereby each individual asset may service more than one segment within the division. An allocation of such asset base would not be meaningful or representative on a segment by segment basis.

Related Party Transaction

Related Party Transaction	6 Months Ended
	Jun. 30, 2018
Related Party Transactions [Abstract]
Related Party Transactions	RELATED PARTY TRANSACTIONS: CONSOL Energy Inc. In connection with the spin-off of its coal business, as discussed in Note 5 - Discontinued Operations, CNX and CONSOL Energy entered into several agreements that govern the relationship of the parties following the Distribution, including the following: • Separation and Distribution Agreement; • Transition Services Agreement; • Tax Matters Agreement; • Employee Matters Agreement; • Intellectual Property Matters Agreement; • CNX Resources Corporation to CONSOL Energy Inc. Trademark License Agreement; • CONSOL Energy Inc. to CNX Resources Corporation Trademark License Agreement; and • First Amendment to Amended and Restated Omnibus Agreement ("Omnibus Amendment"). As of June 30, 2018 , CNX had a payable to CONSOL Energy of $75 recorded in Total Current Liabilities on the Consolidated Balance Sheets. As of December 31, 2017 , CNX had a receivable from CONSOL Energy of $12,540 recorded in Total Current Assets on the Consolidated Balance Sheets. At June 30, 2018 , CNX also had recorded obligations to CONSOL Energy of $11,351 , of which $5,063 was included in Total Current Liabilities and $6,288 was included in Total Deferred Credits and Other Liabilities on the Consolidated Balance Sheets. At December 31, 2017 , CNX had recorded obligations to CONSOL Energy of $15,415 , of which $4,500 was included in Total Current Liabilities and $10,915 was included in Total Deferred Credits and Other Liabilities on the Consolidated Balance Sheets. These items relate to reimbursement of the one-time transaction costs as well as other reimbursements per the terms of the Separation and Distribution Agreement. For the periods prior to the spin-off of the coal business, all significant intercompany transactions between CNX and CONSOL Energy have been included in the Consolidated Financial Statements and are considered to have been effectively settled for cash at the time the transaction was recorded. In the Consolidated Statement of Stockholders' Equity, the distribution of CONSOL Energy Inc. is the net of the variety of intercompany transactions including, but not limited to, collection of trade receivables, payment of trade payables and accrued liabilities, settlement of charges for allocated selling, general and administrative costs and payment of taxes by CNX on CONSOL Energy's behalf.

Stock Repurchase

Stock Repurchase	6 Months Ended
	Jun. 30, 2018
Stock Repurchase [Abstract]
Stock Repurchase	STOCK REPURCHASE: In September 2017, CNX's Board of Directors approved a one-year stock repurchase program of up to $200,000 . On October 30, 2017, the Board approved an increase to the aggregate amount of the repurchase plan to $450,000 . On July 30,2018, the Board approved the extension of the stock repurchase program through December 31, 2018. The repurchases may be effected 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 share 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, 2018 , 11,086,082 shares were repurchased and retired at an average price of $ 15.20 per share for a total cost of $168,719 .

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	6 Months Ended
	Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	GOODWILL AND OTHER INTANGIBLE ASSETS: Goodwill is not amortized, but is evaluated for impairment annually during the fourth quarter, or more frequently if an event occurs or circumstances change that would more likely than not reduce the fair value of its carrying value. The Company 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. To the extent that such indicators exist, a goodwill impairment test is completed. If the carrying value of the goodwill of a reporting unit exceeds its implied fair value, the difference is recognized as an impairment charge. The Company uses a combination of an income and market approach to estimate the fair value of a reporting unit. As a result of the Midstream Acquisition, CNX recorded $796,359 of goodwill and $128,781 of other intangible assets in conjunction with the preliminary purchase accounting. In May 2018 the Company recognized an impairment on this intangible asset of $18,650 in connection with the AEA with HG Energy (See Note 6 - Acquisitions and Dispositions for more information). All goodwill is attributed to the Midstream reportable segment. Changes in the carrying amount of goodwill consist of the following activity: December 31, 2017 $ — Acquisitions 796,359 June 30, 2018 $ 796,359 The carrying amount and accumulated amortization of other intangible assets consist of the following: June 30, 2018 Other Intangible Assets Customer Relationships $ 128,781 Less: Impairment of Other Intangible Assets (18,650 ) Less: Accumulated Amortization for Customer Relationships (3,655 ) Total Other Intangible Assets, net $ 106,476 Amortization expense for other intangible assets was $1,733 and $3,655 for the three and six months ended June 30, 2018 respectively. There was no amortization expense for the three and six months ended June 30, 2017. The customer relationships intangible asset category will be amortized on a straight line basis over approximately 17 years. The estimated future annual amortization expense for the next five fiscal years for other intangible assets recorded at June 30, 2018 is as follows: 2019 2020 2021 2022 2023 Estimated Annual Amortization Expense $ 6,552 $ 6,552 $ 6,552 $ 6,552 $ 6,552

Recent Accounting Pronouncement

Recent Accounting Pronouncements	6 Months Ended
	Jun. 30, 2018
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Pronouncements	RECENT ACCOUNTING PRONOUNCEMENTS: In February 2018, the FASB issued Update 2018-02 - Income Statement - Reporting Comprehensive Income (Topic 220), which allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act (the "Act"). Consequently, the amendments eliminate the stranded tax effects resulting from the Act and will improve the usefulness of information reported to financial statement users. However, because the amendments only relate to the reclassification of the income tax effects of the Act, the underlying guidance that requires that the effect of a change in tax laws or rates be included in income from continuing operations is not affected. This Update also requires certain disclosures about stranded tax effects. The amendments in this Update are effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted and the amendments should be applied either in the period of adoption or retrospectively to each period (or periods) in which the effect of the change in the U.S. federal corporate income tax rate in the Act is recognized. The Company is currently evaluating the impact this guidance may have on CNX's financial statements. In January 2017, the FASB issued Update 2017-04 - Simplifying the Test of Goodwill Impairment. This Update simplifies the quantitative goodwill impairment test requirements by eliminating the requirement to calculate the implied fair value of goodwill (Step 2 of the current goodwill impairment test). Instead a company would record an impairment charge based on the excess of a reporting unit's carrying value over its fair value (measured in Step 1 of the current goodwill impairment test). This Update is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years, and early adoption is permitted. Entities will apply the standard's provisions prospectively. The Company adopted Update 2017-04 on January 1, 2018 and determined that this standard will not have a material quantitative effect on the financial statements, unless an impairment charge is necessary. In February 2016, the FASB issued Update 2016-02 - Leases (Topic 842), which increases transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. Update 2016-02 does retain a distinction between finance leases and operating leases, which is substantially similar to the classification criteria for distinguishing between capital leases and operating leases in the previous lease guidance. Retaining this distinction allows the recognition, measurement and presentation of expenses and cash flows arising from a lease to not significantly change from previous GAAP. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and lease liabilities, but to recognize lease expense on a straight-line basis over the lease term. For both financing and operating leases, the right-to-use asset and lease liability will be initially measured at the present value of the lease payments in the statement of financial position. The accounting applied by a lessor is largely unchanged from that applied under previous GAAP. For public business entities, the amendments in this Update are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early application is permitted. In transition, lessees and lessors are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. CNX is currently finalizing a project plan, reviewing all existing leases and agreements that are covered under the standard, assessing the impact to the Consolidated Financial Statements as well as planning for adoption and implementation of this standard, which includes assessing the impact on information systems and internal controls.

Recent Accounting Pronounceme31

Recent Accounting Pronouncements (Policies)	6 Months Ended
	Jun. 30, 2018
Accounting Changes and Error Corrections [Abstract]
Recent Accounting Pronouncements	In February 2018, the FASB issued Update 2018-02 - Income Statement - Reporting Comprehensive Income (Topic 220), which allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act (the "Act"). Consequently, the amendments eliminate the stranded tax effects resulting from the Act and will improve the usefulness of information reported to financial statement users. However, because the amendments only relate to the reclassification of the income tax effects of the Act, the underlying guidance that requires that the effect of a change in tax laws or rates be included in income from continuing operations is not affected. This Update also requires certain disclosures about stranded tax effects. The amendments in this Update are effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted and the amendments should be applied either in the period of adoption or retrospectively to each period (or periods) in which the effect of the change in the U.S. federal corporate income tax rate in the Act is recognized. The Company is currently evaluating the impact this guidance may have on CNX's financial statements. In January 2017, the FASB issued Update 2017-04 - Simplifying the Test of Goodwill Impairment. This Update simplifies the quantitative goodwill impairment test requirements by eliminating the requirement to calculate the implied fair value of goodwill (Step 2 of the current goodwill impairment test). Instead a company would record an impairment charge based on the excess of a reporting unit's carrying value over its fair value (measured in Step 1 of the current goodwill impairment test). This Update is effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years, and early adoption is permitted. Entities will apply the standard's provisions prospectively. The Company adopted Update 2017-04 on January 1, 2018 and determined that this standard will not have a material quantitative effect on the financial statements, unless an impairment charge is necessary. In February 2016, the FASB issued Update 2016-02 - Leases (Topic 842), which increases transparency and comparability among organizations by recognizing lease assets and lease liabilities on the balance sheet and disclosing key information about leasing arrangements. Update 2016-02 does retain a distinction between finance leases and operating leases, which is substantially similar to the classification criteria for distinguishing between capital leases and operating leases in the previous lease guidance. Retaining this distinction allows the recognition, measurement and presentation of expenses and cash flows arising from a lease to not significantly change from previous GAAP. For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and lease liabilities, but to recognize lease expense on a straight-line basis over the lease term. For both financing and operating leases, the right-to-use asset and lease liability will be initially measured at the present value of the lease payments in the statement of financial position. The accounting applied by a lessor is largely unchanged from that applied under previous GAAP. For public business entities, the amendments in this Update are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early application is permitted. In transition, lessees and lessors are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. CNX is currently finalizing a project plan, reviewing all existing leases and agreements that are covered under the standard, assessing the impact to the Consolidated Financial Statements as well as planning for adoption and implementation of this standard, which includes assessing the impact on information systems and internal controls.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2018
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, 2018 2017 2018 2017 Antidilutive Options 2,300,785 2,360,197 2,300,785 2,360,197 Antidilutive Restricted Stock Units — 194,071 7,828 190,658 Antidilutive Performance Share Units — 1,284,924 178,189 1,284,924 Antidilutive Performance Stock Options 927,268 802,804 927,268 802,804 3,228,053 4,641,996 3,414,070 4,638,583
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, 2018 2017 2018 2017 Options 73,583 28,838 227,301 90,462 Restricted Stock Units 7,260 221 178,397 334,261 Performance Share Units — — 357,597 560,936 80,843 29,059 763,295 985,659
Schedule of Earnings Per Share, Basic and Diluted	The computations for basic and dilutive earnings per share are as follows: For the Three Months Ended June 30, For the Six Months Ended June 30, 2018 2017 2018 2017 Income from Continuing Operations $ 61,394 $ 121,807 $ 606,940 $ 30,801 Less: Net Income Attributable to Non-Controlling Interest 19,380 — 37,363 — Net Income from Continuing Operations Attributable to CNX Resources Shareholders $ 42,014 $ 121,807 $ 569,577 $ 30,801 Income from Discontinued Operations — 47,703 — 99,743 Net Income Attributable to CNX Resources Shareholders $ 42,014 $ 169,510 $ 569,577 $ 130,544 Weighted-average shares of common stock outstanding 215,991,490 230,058,422 218,944,422 229,938,462 Effect of dilutive shares 2,938,470 2,139,974 2,701,442 2,286,571 Weighted-average diluted shares of common stock outstanding 218,929,960 232,198,396 221,645,864 232,225,033 Earnings per Share: Basic (Continuing Operations) $ 0.19 $ 0.53 $ 2.60 $ 0.13 Basic (Discontinued Operations) — 0.21 — 0.44 Total Basic $ 0.19 $ 0.74 $ 2.60 $ 0.57 Dilutive (Continuing Operations) $ 0.19 $ 0.52 $ 2.57 $ 0.13 Dilutive (Discontinued Operations) — 0.21 — 0.43 Total Dilutive $ 0.19 $ 0.73 $ 2.57 $ 0.56

Changes in Accumulated Other 33

Changes in Accumulated Other Comprehensive Loss (Tables)	6 Months Ended
	Jun. 30, 2018
Equity [Abstract]
Schedule of Changes in Accumulated Other Comprehensive Income/(Loss) by Component	Changes in Accumulated Other Comprehensive Loss related to pension obligations, net of tax, were as follows: Balance at December 31, 2017 $ (8,476 ) Other Comprehensive Income before Reclassifications 1,643 Amounts Reclassified from Accumulated Other Comprehensive Loss, net of tax 339 Current Period Other Comprehensive Income 1,982 Balance at June 30, 2018 $ (6,494 )
Schedule of Reclassification of Adjustments to Accumulated Other Comprehensive Income	The following table shows the reclassification of adjustments out of Accumulated Other Comprehensive Loss: For the Three Months Ended June 30, For the Six Months Ended June 30, 2018 2017 2018 2017 Actuarially Determined Long-Term Liability Adjustments* Amortization of Prior Service Costs $ (90 ) $ (749 ) $ (181 ) $ (1,498 ) Recognized Net Actuarial Loss 354 6,247 708 12,550 Total 264 5,498 527 11,052 Less: Tax Benefit 94 2,034 188 4,086 Net of Tax $ 170 $ 3,464 $ 339 $ 6,966 *Excludes amounts related to the remeasurement of the Actuarially Determined Long-Term Liabilities for the three and six months ended June 30, 2018 .

Revenue from Contract with Cu34

Revenue from Contract with Customer (Tables)	6 Months Ended
	Jun. 30, 2018
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following table is a disaggregation of our revenue by major sources: For the Three Months Ended June 30, For the Six Months Ended June 30, 2018 2017 2018 2017 Revenue from Contracts with Customers Natural Gas Revenue $ 289,294 $ 233,723 $ 636,642 $ 507,270 NGLs Revenue 39,557 21,637 90,441 60,920 Condensate Revenue 4,996 3,885 11,499 8,189 Oil Revenue 670 1,061 1,558 1,690 Total Natural Gas, NGLs and Oil Revenue 334,517 260,306 740,140 578,069 Purchased Gas Revenue 9,930 10,316 27,985 19,294 Midstream Revenue 23,483 — 49,737 — Other Sources of Revenue and Other Operating Income Gain on Commodity Derivative Instruments 25,660 83,788 60,747 61,325 Other Operating Income 8,534 16,658 19,244 32,308 Total Revenue and Other Operating Income $ 402,124 $ 371,068 $ 897,853 $ 690,996

Discontinued Operations (Tables

Discontinued Operations (Tables)	6 Months Ended
	Jun. 30, 2018
Discontinued Operations and Disposal Groups [Abstract]
Disposal Groups, Including Discontinued Operations	The following table details selected financial information for the divested business included within discontinued operations: For the Three Months Ended For the Six Months Ended June 30, 2017 June 30, 2017 Coal Revenue $ 303,707 $ 620,155 Other Outside Sales 14,856 27,742 Freight-Outside Coal 17,763 30,045 Miscellaneous Other Income 8,934 26,330 Gain on Sale of Assets 5,581 13,536 Total Revenue and Other Income $ 350,841 $ 717,808 Total Costs 289,790 605,620 Income From Operations Before Income Taxes $ 61,051 $ 112,188 Income Tax Expense 9,035 2,668 Less: Net Income Attributable to Noncontrolling Interest 4,313 9,777 Income From Discontinued Operations, net $ 47,703 $ 99,743

Acquisitions and Dispositions (

Acquisitions and Dispositions (Tables)	6 Months Ended
	Jun. 30, 2018
Business Combinations [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	Estimated Fair Value of Consideration Transferred: Cash Consideration $ 305,000 CNX Gathering Cash on Hand at January 3, 2018 Distributed to Noble 2,620 Fair Value of Previously Held Equity Interest 799,033 Total Estimated Fair Value of Consideration Transferred $ 1,106,653 The following is a summary of the preliminary estimated fair values of the net assets acquired: Fair Value of Assets Acquired: Cash and Cash Equivalents $ 8,348 Accounts and Notes Receivable 21,199 Prepaid Expense 2,006 Other Current Assets 163 Property, Plant and Equipment, Net 1,043,340 Intangible Assets 128,781 Other 593 Total Assets Acquired 1,204,430 Fair Value of Liabilities Assumed: Accounts Payable 26,059 CNXM Revolving Credit Facility 149,500 Total Liabilities Assumed 175,559 Total Identifiable Net Assets 1,028,871 Fair Value of Noncontrolling Interest in CNXM (718,577 ) Goodwill 796,359 Net Assets Acquired $ 1,106,653
Schedule of Pro Forma Information	Post-Acquisition Operating Results (Midstream Acquisition) The Midstream Acquisition contributed the following to the Company's Midstream segment for the three and six months ended June 30, 2018. Three Months Ended Six Months Ended June 30, 2018 June 30, 2018 Midstream Revenue $ 61,325 $ 125,503 Earnings From Continuing Operations Before Income Tax $ 27,795 $ 63,329 The pro forma combined financial information has been included for comparative purposes and is not necessarily indicative of the results that might have actually occurred had the acquisition been completed at January 1, 2017; furthermore, the financial information is not intended to be a projection of future results. Pro Forma (in thousands, except per share data) (unaudited) Three Months Ended June 30, 2017 Six Months Ended June 30, 2017 Pro Forma Total Revenue and Other Operating Income $ 395,774 $ 740,411 Pro Forma Net Income from Continuing Operations $ 150,789 $ 92,979 Less: Pro Forma Net income Attributable to Noncontrolling Interests $ 18,720 $ 38,134 Pro Forma Net Income from Continuing Operations Attributable to CNX $ 132,069 $ 54,845 Pro Forma Income per Share from Continuing Operations (Basic) $ 0.58 $ 0.24 Pro Forma Income per Share from Continuing Operations (Diluted) $ 0.58 $ 0.24

Components of Pension Plan Ne37

Components of Pension Plan Net Periodic Benefit Cost (Tables)	6 Months Ended
	Jun. 30, 2018
Retirement Benefits [Abstract]
Components of Net Periodic Costs	Components of Net Periodic Benefit Cost are as follows: For the Three Months Ended June 30, For the Six Months Ended June 30, 2018 2017 2018 2017 Service Cost $ 96 $ 149 $ 193 $ 193 Interest Cost 300 476 600 619 Amortization of Prior Service Credits (90 ) (143 ) (181 ) (186 ) Recognized Net Actuarial Loss 373 604 746 786 Curtailment Gain (416 ) — (416 ) — Net Periodic Benefit Cost $ 263 $ 1,086 $ 942 $ 1,412

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	6 Months Ended
	Jun. 30, 2018
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	June 30, December 31, Property, Plant and Equipment Intangible drilling cost $ 3,772,658 $ 3,849,689 Proved gas properties 937,243 1,999,891 Gas gathering equipment 2,017,836 1,182,234 Unproved gas properties 1,093,985 919,733 Gas wells and related equipment 743,752 834,120 Surface land and other equipment 309,894 309,602 Other gas assets 66,058 221,226 Total Property, Plant and Equipment 8,941,426 9,316,495 Less: Accumulated Depreciation, Depletion and Amortization 2,399,555 3,526,742 Total Property, Plant and Equipment Assets Held for Sale - Net 230,593 — Total Property, Plant and Equipment - Net $ 6,772,464 $ 5,789,753

Long-Term Debt (Tables)

Long-Term Debt (Tables)	6 Months Ended
	Jun. 30, 2018
Long-term Debt, Other Disclosures [Abstract]
Schedule of Long-term Debt	June 30, December 31, Debt: Senior Notes due April 2022 at 5.875% (Principal of $1,314,307 and $1,705,682 $ 1,316,723 $ 1,709,226 CNX Revolving Credit Facility 422,000 — CNX Midstream Partners LP Senior Notes due March 2026 at 6.50% (Principal of $400,000 less Unamortized Discount of $5,750 at June 30, 2018) 394,250 — Senior Notes due April 2023 at 8.00% (Principal of $200,000 and $500,000 less Unamortized Discount of $1,720 and $4,751, respectively) 198,281 495,249 CNX Midstream Partners LP Revolving Credit Facility 11,000 — Other Note Maturing in 2018 (Principal of $358 less Unamortized Discount of $8 at December 31, 2017) — 350 Less: Unamortized Debt Issuance Costs 11,474 17,536 2,330,780 2,187,289 Less: Amounts Due in One Year* — 263 Long-Term Debt $ 2,330,780 $ 2,187,026 * Excludes current portion of Capital Lease Obligations of $6,915 and $ 6,848 at June 30, 2018 and December 31, 2017 , respectively.

Commitments and Contingent Li40

Commitments and Contingent Liabilities (Tables)	6 Months Ended
	Jun. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Long-term Purchase Commitment	At June 30, 2018 , 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 table. 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 these commitments will expire without being funded, and therefore will not have a material adverse effect on financial condition. Amount of Commitment Expiration Per Period Total Amounts Committed Less Than 1 Year 1-3 Years 3-5 Years Beyond 5 Years Letters of Credit: Firm Transportation $ 251,057 $ 251,057 $ — $ — $ — Other 285 285 — — — Total Letters of Credit 251,342 251,342 — — — Surety Bonds: Employee-Related 1,850 1,850 — — — Environmental 25,973 25,914 59 — — Other 12,315 10,805 1,510 — — Total Surety Bonds 40,138 38,569 1,569 — — Total Commitments $ 291,480 $ 289,911 $ 1,569 $ — $ —
Schedule of Future Minimum Rental Payments for Operating Leases	Future minimum lease payments under operating leases at June 30, 2018 are as follows: Operating Lease Obligations Due Amount Less than 1 year $ 9,607 1 - 3 years 13,325 3 - 5 years 10,756 More than 5 years 38,477 Total Operating Lease Obligations $ 72,165
Unrecorded Unconditional Purchase Obligations Disclosure	As of June 30, 2018 , the purchase obligations for each of the next five years and beyond were as follows: Obligations Due Amount Less than 1 year $ 207,148 1 - 3 years 419,091 3 - 5 years 306,479 More than 5 years 620,806 Total Purchase Obligations $ 1,553,524

Derivative Instruments (Tables)

Derivative Instruments (Tables)	6 Months Ended
	Jun. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Notional Amounts of Derivative Instruments	The total notional amounts of production of CNX's derivative instruments at June 30, 2018 and December 31, 2017 were as follows: June 30, December 31, Forecasted to 2018 2017 Settle Through Natural Gas Commodity Swaps (Bcf) 1,064.1 1,067.2 2023 Natural Gas Basis Swaps (Bcf) 775.5 688.1 2023
Schedule of Derivative Assets at Fair Value	The gross fair value of CNX's derivative instruments at June 30, 2018 and December 31, 2017 was as follows: Asset Derivative Instruments Liability Derivative Instruments June 30, December 31, June 30, December 31, 2018 2017 2018 2017 Commodity Swaps: Prepaid Expense $ 27,226 $ 62,369 Other Accrued Liabilities $ 26,943 $ 5,985 Other Assets 132,594 59,281 Other Liabilities 10,381 42,419 Total Asset $ 159,820 $ 121,650 Total Liability $ 37,324 $ 48,404 Basis Only Swaps: Prepaid Expense $ 10,932 $ 14,965 Other Accrued Liabilities $ 26,969 $ 35,306 Other Assets 35,101 24,223 Other Liabilities 20,557 17,179 Total Asset $ 46,033 $ 39,188 Total Liability $ 47,526 $ 52,485
Schedule of Derivative Liabilities at Fair Value	The gross fair value of CNX's derivative instruments at June 30, 2018 and December 31, 2017 was as follows: Asset Derivative Instruments Liability Derivative Instruments June 30, December 31, June 30, December 31, 2018 2017 2018 2017 Commodity Swaps: Prepaid Expense $ 27,226 $ 62,369 Other Accrued Liabilities $ 26,943 $ 5,985 Other Assets 132,594 59,281 Other Liabilities 10,381 42,419 Total Asset $ 159,820 $ 121,650 Total Liability $ 37,324 $ 48,404 Basis Only Swaps: Prepaid Expense $ 10,932 $ 14,965 Other Accrued Liabilities $ 26,969 $ 35,306 Other Assets 35,101 24,223 Other Liabilities 20,557 17,179 Total Asset $ 46,033 $ 39,188 Total Liability $ 47,526 $ 52,485
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	The effect of 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, 2018 2017 2018 2017 Cash Received (Paid) in Settlement of Commodity Derivative Instruments: Commodity Swaps: Natural Gas $ 17,058 $ (15,509 ) $ 16,624 $ (40,116 ) Propane — — — (1,216 ) Natural Gas Basis Swaps (374 ) (16,776 ) (16,931 ) (38,056 ) Total Cash Received (Paid) in Settlement of Commodity Derivative Instruments 16,684 (32,285 ) (307 ) (79,388 ) Unrealized Gain (Loss) on Commodity Derivative Instruments: Commodity Swaps: Natural Gas 46,450 70,282 49,250 232,886 Propane — — — 1,147 Natural Gas Basis Swaps (37,474 ) 45,791 11,804 (93,320 ) Total Unrealized Gain on Commodity Derivative Instruments 8,976 116,073 61,054 140,713 Gain (Loss) on Commodity Derivative Instruments: Commodity Swaps: Natural Gas 63,508 54,773 65,874 192,770 Propane — — — (69 ) Natural Gas Basis Swaps (37,848 ) 29,015 (5,127 ) (131,376 ) Total Gain on Commodity Derivative Instruments $ 25,660 $ 83,788 $ 60,747 $ 61,325

Fair Value of Financial Instr42

Fair Value of Financial Instruments (Tables)	6 Months Ended
	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value, Assets Measured on Recurring Basis	The financial instruments measured at fair value on a recurring basis are summarized below: Fair Value Measurements at June 30, 2018 Fair Value Measurements at December 31, 2017 Description (Level 1) (Level 2) (Level 3) (Level 1) (Level 2) (Level 3) Gas Derivatives $ — $ 121,003 $ — $ — $ 59,949 $ — Put Option $ — $ — $ — $ — $ (3,500 ) $ —
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, 2018 December 31, 2017 Carrying Amount Fair Value Carrying Amount Fair Value Cash and Cash Equivalents $ 54,846 $ 54,846 $ 509,167 $ 509,167 Long-Term Debt $ 2,342,254 $ 2,329,810 $ 2,204,825 $ 2,281,282

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	6 Months Ended
	Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Variable Interest Entities	The following table presents amounts included in the Company's Consolidated Balance Sheet that were for the use or obligation of CNXM as of June 30, 2018 : June 30, 2018 Assets: Cash $ 707 Receivables - Related Party 12,072 Receivables - Third Party 7,546 Other Current Assets 2,726 Property, Plant and Equipment, net 792,513 Other Assets 3,494 Total Assets $ 819,058 Liabilities: Accounts Payable $ 38,327 Accounts Payable - Related Party 3,211 Revolving Credit Facility 11,000 Long-Term Debt 393,169 Total Liabilities $ 445,707 The following table summarizes CNXM's Consolidated Statements of Operations and Cash Flows for the three and six months ended June 30, 2018 , inclusive of affiliate amounts: For the Three Months Ended For the Six Months Ended June 30, 2018 June 30, 2018 Revenue Gathering Revenue - Related Party $ 37,576 $ 75,306 Gathering Revenue - Third Party 23,438 49,577 Total Revenue 61,014 124,883 Expenses Operating Expense - Related Party 5,079 9,514 Operating Expense - Third Party 7,406 15,874 General and Administrative Expense - Related Party 3,619 7,232 General and Administrative Expense - Third Party 2,320 4,868 (Gain) Loss on Asset Sales (254 ) 2,501 Depreciation Expense 5,443 11,299 Interest Expense 7,119 9,608 Total Expense 30,732 60,896 Net Income $ 30,282 $ 63,987 Net Cash Provided by Operating Activities $ 53,674 $ 95,541 Net Cash Used in Investing Activities $ (24,969 ) $ (35,125 ) Net Cash Used in Financing Activities $ (29,964 ) $ (62,903 ) The following transactions were included in Other Operating Income and Transportation, Gathering and Compression within the Consolidated Statements of Income: For the Three Months Ended For the Six Months Ended June 30, 2017 June 30, 2017 Other Operating Income: Equity in Earnings of Affiliates - CNX Gathering $ 284 $ 2,150 Equity in Earnings of Affiliates - CNXM $ 9,712 $ 19,784 Transportation, Gathering and Compression: Gathering Services - CNX Gathering $ 232 $ 485 Gathering Services - CNXM $ 31,695 $ 65,749
Investments in and Advances to Affiliates	The following is a summary of the Company's Investment in Affiliates balances included within the Consolidated Balance Sheets associated with CNX Gathering and CNXM, respectively: CNX Gathering CNXM Total Balance at December 31, 2016 $ 151,075 $ 18,133 $ 169,208 Equity in Earnings 9,823 38,523 48,346 Distributions (17,254 ) (24,929 ) (42,183 ) Asset Transfer (2,527 ) 2,527 — Balance at December 31, 2017 $ 141,117 $ 34,254 $ 175,371

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2018
Segment Reporting [Abstract]
Industry Segment Results	Industry segment results for the three months ended June 30, 2018 : Marcellus Shale Utica Shale Coalbed Methane Other Gas Total E&P Midstream Unallocated Intercompany Eliminations Consolidated Natural Gas, NGLs and Oil Revenue $ 178,305 $ 107,758 $ 46,882 $ 1,572 $ 334,517 $ — $ — $ — $ 334,517 (A) Purchased Gas Revenue — — — 9,930 9,930 — — — 9,930 Midstream Revenue — — — — — 61,325 — (37,842 ) 23,483 Gain on Commodity Derivative Instruments 9,128 5,371 2,155 9,006 25,660 — — — 25,660 Other Operating Income — — — 8,595 8,595 — — (61 ) 8,534 (B) Total Revenue and Other Operating Income $ 187,433 $ 113,129 $ 49,037 $ 29,103 $ 378,702 $ 61,325 $ — $ (37,903 ) $ 402,124 Earnings (Loss) From Continuing Operations Before Income Tax $ 47,273 $ 46,486 $ 12,405 $ (64,039 ) $ 42,125 $ 27,795 $ (39,628 ) $ — $ 30,292 Segment Assets $ 6,055,545 $ 1,830,007 $ 333,372 $ (11,166 ) $ 8,207,758 (C) Depreciation, Depletion and Amortization $ 111,125 $ 7,962 $ — $ — $ 119,087 Capital Expenditures $ 238,889 $ 25,285 $ — $ — $ 264,174 (A) Included in Total Natural Gas, NGLs and Oil Revenue are sales of $36,849 to NJR Energy Services Company and $34,644 to Direct Energy Business Marketing LLC, each of which comprises over 10% of sales. (B) Includes equity in earnings of unconsolidated affiliates of $1,669 for Total E&P. (C) Includes investments in unconsolidated equity affiliates of $22,347 for Total E&P. Industry segment results for the three months ended June 30, 2017 : Marcellus Utica Shale Coalbed Methane Other Total Unallocated Consolidated Natural Gas, NGLs and Oil Revenue $ 154,424 $ 39,450 $ 51,973 $ 14,459 $ 260,306 $ — $ 260,306 (D) Purchased Gas Revenue — — — 10,316 10,316 — 10,316 (Loss) Gain on Commodity Derivative Instruments (21,545 ) (2,063 ) (6,788 ) 114,184 83,788 — 83,788 Other Operating Income — — — 16,658 16,658 — 16,658 Total Revenue and Other Operating Income $ 132,879 $ 37,387 $ 45,185 $ 155,617 $ 371,068 $ — $ 371,068 Earnings (Loss) From Continuing Operations Before Income Tax $ 16,411 $ 9,063 $ (36 ) $ 25,257 $ 50,695 $ 129,070 $ 179,765 (E) Segment Assets $ 6,194,820 $ 2,830,375 $ 9,025,195 (F) Depreciation, Depletion and Amortization $ 91,640 $ — $ 91,640 Capital Expenditures $ 145,839 $ — $ 145,839 (D) Included in Total Natural Gas, NGLs and Oil Revenue are sales of $40,273 to Direct Energy Business Marketing LLC and $34,733 to NJR Energy Services Company, each of which comprises over 10% of sales. (E) Includes equity in earnings of unconsolidated affiliates of $10,055 for Total E&P. (F) Includes investments in unconsolidated equity affiliates of $188,649 for Total E&P. Industry segment results for the six months ended June 30, 2018 : Marcellus Shale Utica Shale Coalbed Methane Other Gas Total E&P Midstream Unallocated Intercompany Eliminations Consolidated Natural Gas, NGLs and Oil Revenue $ 383,321 $ 238,080 $ 104,383 $ 14,356 $ 740,140 $ — $ — $ — $ 740,140 (A) Purchased Gas Revenue — — 27,985 27,985 — — — 27,985 Midstream Revenue — — — — — 125,503 — (75,766 ) 49,737 (Loss) Gain on Commodity Derivative Instruments (385 ) — 897 (275 ) 60,510 60,747 — — — 60,747 Other Operating Income — — — 19,386 19,386 — — (142 ) 19,244 (B) Total Revenue and Other Operating Income $ 382,936 $ 238,977 $ 104,108 $ 122,237 $ 848,258 $ 125,503 $ — $ (75,908 ) $ 897,853 Earnings (Loss) From Continuing Operations Before Income Tax $ 91,515 $ 102,593 $ 25,522 $ (77,695 ) $ 141,935 $ 63,329 $ 584,268 $ — $ 789,532 Segment Assets $ 6,055,545 $ 1,830,007 $ 333,372 $ (11,166 ) $ 8,207,758 (C) Depreciation, Depletion and Amortization $ 226,991 $ 16,763 $ — $ — $ 243,754 Capital Expenditures $ 455,397 $ 41,262 $ — $ — $ 496,659 (A) Included in Total Natural Gas, NGLs and Oil Revenue are sales of $115,845 to NJR Energy Services Company and $92,571 to Direct Energy Business Marketing LLC, each of which comprises over 10% of sales. (B) Includes equity in earnings of unconsolidated affiliates of $3,447 for Total E&P (C) Includes investments in unconsolidated equity affiliates of $22,347 for Total E&P. Industry segment results for the six months ended June 30, 2017 : Marcellus Utica Shale Coalbed Methane Other Total Unallocated Consolidated Natural Gas, NGLs and Oil Revenue $ 343,599 $ 93,118 $ 110,600 $ 30,752 $ 578,069 $ — $ 578,069 (D) Purchased Gas Revenue — — — 19,294 19,294 — 19,294 (Loss) Gain on Commodity Derivative Instruments (54,210 ) (4,751 ) (15,987 ) 136,273 61,325 — 61,325 Other Operating Income — — — 32,308 32,308 — 32,308 Total Revenue and Other Operating Income $ 289,389 $ 88,367 $ 94,613 $ 218,627 $ 690,996 $ — $ 690,996 Earnings (Loss) From Continuing Operations Before Income Tax $ 46,380 $ 26,870 $ 3,572 $ (165,298 ) $ (88,476 ) $ 129,813 $ 41,337 (E) Segment Assets $ 6,194,820 $ 2,830,375 $ 9,025,195 (F) Depreciation, Depletion and Amortization $ 187,318 $ — $ 187,318 Capital Expenditures $ 249,962 $ — $ 249,962 (D) Included in Total Natural Gas, NGLs and Oil Revenue are sales of $91,763 to NJR Energy Services Company and $86,639 to Direct Energy Business Marketing LLC, each of which comprises over 10% of sales. (E) Includes equity in earnings of unconsolidated affiliates of $22,385 for Total E&P. (F) Includes investments in unconsolidated equity affiliates of $188,649 for Total E&P.
Reconciliation of Revenue from Segments to Consolidated	Revenue and Other Operating Income For the Three Months Ended June 30, For the Six Months Ended June 30, 2018 2017 2018 2017 Total Segment Revenue from Contracts with External Customers $ 367,930 $ 270,622 $ 817,862 $ 597,363 Gain on Commodity Derivative Instruments 25,660 83,788 60,747 61,325 Other Operating Income 8,534 16,658 19,244 32,308 Total Consolidated Revenue and Other Operating Income $ 402,124 $ 371,068 $ 897,853 $ 690,996
Reconciliation of Revenue and Operating Income from Segments to Consolidated	Income From Continuing Operations Before Income Tax: For the Three Months Ended June 30, For the Six Months Ended June 30, 2018 2017 2018 2017 Segment Income (Loss) Before Income Taxes for reportable business segments: Total E&P $ 42,125 $ 50,695 $ 141,935 $ (88,476 ) Midstream 27,795 — 63,329 — Total Segment Income (Loss) Before Income Taxes for reportable business segments 69,920 50,695 205,264 (88,476 ) Unallocated Expenses: Other (Expense) Income (575 ) (5,475 ) 5,917 $ (9,550 ) Gain on Certain Asset Sales 3,010 134,581 12,386 138,577 Gain on Previously Held Equity Interest — — 623,663 — (Loss) Gain on Debt Extinguishment (23,413 ) (36 ) (39,048 ) 786 Impairment of Other Intangible Assets (18,650 ) — (18,650 ) — Income From Continuing Operations Before Income Tax $ 30,292 $ 179,765 $ 789,532 $ 41,337
Reconciliation of Assets and Liabilities from Segment to Consolidated	Total Assets: June 30, 2018 2017 Segment assets for total reportable business segments E&P $ 6,055,545 $ 6,194,820 Midstream 1,830,007 — Intercompany Eliminations (11,166 ) — Items excluded from segment assets: Cash and Cash Equivalents 54,846 291,535 Recoverable Income Taxes 27,780 112,073 Deferred Income Taxes — — Assets Held for Sale 250,746 — Discontinued Operations — 2,426,767 Total Consolidated Assets $ 8,207,758 $ 9,025,195

Goodwill and Other Intangible45

Goodwill and Other Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	All goodwill is attributed to the Midstream reportable segment. Changes in the carrying amount of goodwill consist of the following activity: December 31, 2017 $ — Acquisitions 796,359 June 30, 2018 $ 796,359
Schedule of Finite-Lived Intangible Assets	The carrying amount and accumulated amortization of other intangible assets consist of the following: June 30, 2018 Other Intangible Assets Customer Relationships $ 128,781 Less: Impairment of Other Intangible Assets (18,650 ) Less: Accumulated Amortization for Customer Relationships (3,655 ) Total Other Intangible Assets, net $ 106,476
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	The estimated future annual amortization expense for the next five fiscal years for other intangible assets recorded at June 30, 2018 is as follows: 2019 2020 2021 2022 2023 Estimated Annual Amortization Expense $ 6,552 $ 6,552 $ 6,552 $ 6,552 $ 6,552

Earnings Per Share Anti-Dilutiv

Earnings Per Share Anti-Dilutive Options and Units Excluded from Earnings Per Share (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from the computation of diluted earnings per share (in shares)	3,228,053	4,641,996	3,414,070	4,638,583
Employee Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from the computation of diluted earnings per share (in shares)	2,300,785	2,360,197	2,300,785	2,360,197
Restricted Stock Units (RSUs) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from the computation of diluted earnings per share (in shares)	0	194,071	7,828	190,658
Performance Share Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from the computation of diluted earnings per share (in shares)	0	1,284,924	178,189	1,284,924
Performance Share Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from the computation of diluted earnings per share (in shares)	927,268	802,804	927,268	802,804

Earnings Per Share Share-based

Earnings Per Share Share-based Compensation (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based awards, exercised or released (in shares)	80,843	29,059	763,295	985,659
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options exercised (in shares)	73,583	28,838	227,301	90,462
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options exercised (in shares)	7,260	221	178,397	334,261
Performance Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options exercised (in shares)	0	0	357,597	560,936

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Numerator:
Income from Continuing Operations	$ 61,394	$ 121,807	$ 606,940	$ 30,801
Less: Net Income Attributable to Noncontrolling Interest	19,380	0	37,363	0
Net Income from Continuing Operations Attributable to CNX Resources Shareholders	42,014	121,807	569,577	30,801
Income from Discontinued Operations	0	47,703	0	99,743
Net Income	$ 42,014	$ 169,510	$ 569,577	$ 130,544
Denominator:
Weighted-average shares of common stock outstanding (in shares)	215,991,490	230,058,422	218,944,422	229,938,462
Effect of dilutive shares (in shares)	2,938,470	2,139,974	2,701,442	2,286,571
Weighted-average diluted shares of common stock outstanding (in shares)	218,929,960	232,198,396	221,645,864	232,225,033
Earnings Per Share
Basic (Continuing Operations) (in usd per share)	$ 0.19	$ 0.53	$ 2.60	$ 0.13
Basic (Discontinued Operations) (in usd per share)	0	0.21	0	0.44
Total Basic (in usd per share)	0.19	0.74	2.60	0.57
Dilutive (Continuing Operations) (in usd per share)	0.19	0.52	2.57	0.13
Dilutive (Discontinued Operations) (in usd per share)	0	0.21	0	0.43
Total Dilutive (in usd per share)	$ 0.19	$ 0.73	$ 2.57	$ 0.56

Changes in Accumulated Other 49

Changes in Accumulated Other Comprehensive Income / (Loss) by Component (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at December 31, 2017			$ (8,476)
Other Comprehensive Income before Reclassifications			1,643
Amounts Reclassified from Accumulated Other Comprehensive Loss, net of tax			339
Current Period Other Comprehensive Income	$ 1,812	$ 3,464	1,982	$ 6,966
Balance at June 30, 2018	$ (6,494)		$ (6,494)

Changes in Accumulated Other 50

Changes in Accumulated Other Comprehensive Loss Reclassification of Adjustments out of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Equity [Abstract]
Amortization of Prior Service Costs	$ (90)	$ (749)	$ (181)	$ (1,498)
Recognized Net Actuarial Loss	354	6,247	708	12,550
Total	264	5,498	527	11,052
Less: Tax Benefit	94	2,034	188	4,086
Net of Tax	$ 170	$ 3,464	$ 339	$ 6,966

Revenue from Contract with Cu51

Revenue from Contract with Customer Performance Obligation (Details) $ in Thousands	Jun. 30, 2018USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations, expected timing of satisfaction	1 year
Remaining performance obligations	$ 55,304
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations, expected timing of satisfaction	2 years
Remaining performance obligations	$ 185,984

Revenue from Contract with Cu52

Revenue from Contract with Customer Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Disaggregation of Revenue [Line Items]
Gain on Commodity Derivative Instruments	$ 25,660	$ 83,788	$ 60,747	$ 61,325
Other Operating Income	8,534	16,658	19,244	32,308
Total Revenue	402,124	371,068	897,853	690,996
Natural Gas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	289,294	233,723	636,642	507,270
NGLs [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	39,557	21,637	90,441	60,920
Condensate [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	4,996	3,885	11,499	8,189
Oil [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	670	1,061	1,558	1,690
Oil and Gas Service [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	334,517	260,306	740,140	578,069
Purchased Gas Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	9,930	10,316	27,985	19,294
Midstream Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	$ 23,483	$ 0	$ 49,737	$ 0

Revenue from Contract with Cu53

Revenue from Contract with Customer Narrative (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jan. 03, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Receivables related to contracts with customers	$ 132,016		$ 156,817
Midstream Acquisition [Member]
Business Acquisition [Line Items]
Receivables related to acquisition		$ 9,353

Discontinued Operations (Detail

Discontinued Operations (Details) - Buchanan and Other Assets [Member] - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Coal Revenue	$ 303,707	$ 620,155
Other Outside Sales	14,856	27,742
Freight-Outside Coal	17,763	30,045
Miscellaneous Other Income	8,934	26,330
Gain on Sale of Assets	5,581	13,536
Total Revenue and Other Income	350,841	717,808
Total Costs	289,790	605,620
Income From Operations Before Income Taxes	61,051	112,188
Income Tax Expense	9,035	2,668
Less: Net Income Attributable to Noncontrolling Interest	4,313	9,777
Income From Discontinued Operations, net	$ 47,703	$ 99,743

Acquisitions and Dispositions N

Acquisitions and Dispositions Narrative (Details) - USD ($) $ in Thousands	May 02, 2018	Mar. 30, 2018	Jan. 03, 2018	Dec. 14, 2017	May 31, 2018	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Business Acquisition [Line Items]
Cash proceeds from Asset Exchange Agreement	$ 7,000
Net gain on sale						$ 3,280	$ 134,581	$ 14,622	$ 138,577
Impairment of Other Intangible Assets						18,650	0	18,650	0
Gain on remeasurement of fair value of previously held equity interest						$ 0	$ 0	$ 623,663	$ 0
Midstream Acquisition [Member]
Business Acquisition [Line Items]
Cash consideration transferred			$ 305,000	$ 305,000
Fair value of previously held equity interest			799,033
Gain on remeasurement of fair value of previously held equity interest			$ 623,663
Asset Exchange Agreement with HG Energy [Member]
Business Acquisition [Line Items]
Net gain on sale	$ 286
Shallow Oil, Gas, and CBM Assets in Pennsylvania and West Virginia [Member]
Business Acquisition [Line Items]
Cash consideration received in sale of oil and gas assets		$ 89,296
Asset retirement obligations assumed		196,514
Net gain on sale		$ 4,751
CNX Gathering LLC [Member]
Business Acquisition [Line Items]
Ownership percentage in equity method investment				50.00%		50.00%		50.00%
CONE Midstream GP LLC [Member]
Business Acquisition [Line Items]
Ownership percentage by parent				100.00%
Customer Relationships [Member] | Midstream [Member]
Business Acquisition [Line Items]
Impairment of Other Intangible Assets					$ 18,650			$ 18,650

Acquisitions and Dispositions C

Acquisitions and Dispositions Consideration Given In Acquisition (Details) - Midstream Acquisition [Member] - USD ($) $ in Thousands	Jan. 03, 2018	Dec. 14, 2017
Business Acquisition [Line Items]
Cash Consideration	$ 305,000	$ 305,000
CNX Gathering Cash on Hand at January 3, 2018 Distributed to Noble	2,620
Fair Value of Previously Held Equity Interest	799,033
Total Estimated Fair Value of Consideration Transferred	$ 1,106,653

Acquisitions and Dispositions F

Acquisitions and Dispositions Fair Value of Net Assets Acquired (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jan. 03, 2018	Dec. 31, 2017
Total Identifiable Net Assets
Goodwill	$ 796,359		$ 0
Midstream Acquisition [Member]
Fair Value of Assets Acquired:
Cash and Cash Equivalents		$ 8,348
Accounts and Notes Receivable		21,199
Prepaid Expense		2,006
Other Current Assets		163
Property, Plant and Equipment, Net		1,043,340
Intangible Assets		128,781
Other		593
Total Assets Acquired		1,204,430
Fair Value of Liabilities Assumed:
Accounts Payable		26,059
CNXM Revolving Credit Facility		149,500
Total Liabilities Assumed		175,559
Total Identifiable Net Assets
Total Identifiable Net Assets		1,028,871
Fair Value of Noncontrolling Interest in CNXM		(718,577)
Goodwill		796,359
Net Assets Acquired		$ 1,106,653

Acquisitions and Dispositions P

Acquisitions and Dispositions Post Acquisition Operating Results (Details) - CNXM [Member] - Midstream Acquisition [Member] - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018
Business Acquisition [Line Items]
Midstream Revenue	$ 61,325	$ 125,503
Earnings From Continuing Operations Before Income Tax	$ 27,795	$ 63,329

Acquisitions and Dispositions59

Acquisitions and Dispositions Pro Forma Financial Information (Details) - Midstream Acquisition [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017
Business Acquisition [Line Items]
Pro Forma Total Revenue and Other Operating Income	$ 395,774	$ 740,411
Pro Forma Net Income from Continuing Operations	150,789	92,979
Less: Pro Forma Net income Attributable to Noncontrolling Interests	18,720	38,134
Pro Forma Net Income from Continuing Operations Attributable to CNX	$ 132,069	$ 54,845
Pro Income Loss per Share from Continuing Operations (Basic) (usd per share)	$ 0.58	$ 0.24
Pro Income Loss per Share from Continuing Operations (Diluted) (usd per share)	$ 0.58	$ 0.24

Components of Pension Plan Ne60

Components of Pension Plan Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Amortization of Prior Service Credits	$ (90)	$ (749)	$ (181)	$ (1,498)
Recognized Net Actuarial Loss	354	6,247	708	12,550
Total	264	5,498	527	11,052
Pension Plan [Member]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service Cost	96	149	193	193
Interest Cost	300	476	600	619
Amortization of Prior Service Credits	(90)	(143)	(181)	(186)
Recognized Net Actuarial Loss	373	604	746	786
Curtailment Gain	(416)	0	(416)	0
Total	$ 263	$ 1,086	942	$ 1,412
Decrease in plan liabilities due to plan remeasurement			$ 2,235

Income Tax Reconciliation (Deta

Income Tax Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017	Mar. 21, 2018
Income Tax Disclosure [Abstract]
Effective tax rate, percentage	(102.70%)	32.20%	23.10%	25.50%
Income tax benefit, revaluation of deferred tax assets					$ 115,291
Income tax benefit, reversal of valuation allowance for AMT credits					154,384
Financial statement benefit, NOL carryback	$ 20,000
Total amount of uncertain tax positions	39,953		$ 39,953		37,813
Unrecognized tax benefits that would impact effective tax rate	31,516		31,516		29,376
Change in unrecognized tax benefits			2,140
Accrued interest liability	814		814		$ 644
Accrued interest expense	$ 169		$ 169
Reduction of net operating loss						$ 108,651

Property, Plant and Equipment62

Property, Plant and Equipment (Details) a in Thousands, $ in Thousands	1 Months Ended		3 Months Ended		6 Months Ended
	Jun. 30, 2018USD ($)a	Feb. 28, 2017USD ($)	Jun. 30, 2018USD ($)a	Jun. 30, 2017USD ($)	Jun. 30, 2018USD ($)a	Jun. 30, 2017USD ($)	Dec. 31, 2017USD ($)
Property, Plant and Equipment [Line Items]
Total Property, Plant and Equipment	$ 8,941,426		$ 8,941,426		$ 8,941,426		$ 9,316,495
Less: Accumulated Depreciation, Depletion and Amortization	2,399,555		2,399,555		2,399,555		3,526,742
Total Property, Plant and Equipment Assets Held for Sale - Net	230,593		230,593		230,593		0
Total Property, Plant and Equipment—Net	$ 6,772,464		6,772,464		6,772,464		5,789,753
Impairment on Knox			$ 0	$ 0	$ 0	$ 137,865
Undeveloped acres | a	26		26		26
Proceeds from sale of joint venture	$ 400,000
Deposit received for sale of joint venture			$ 40,000
Gas Segment [Member]
Property, Plant and Equipment [Line Items]
Intangible drilling cost	3,772,658		3,772,658		$ 3,772,658		3,849,689
Proved gas properties	937,243		937,243		937,243		1,999,891
Gas gathering equipment	2,017,836		2,017,836		2,017,836		1,182,234
Unproved gas properties	1,093,985		1,093,985		1,093,985		919,733
Gas wells and related equipment	743,752		743,752		743,752		834,120
Surface land and other equipment	309,894		309,894		309,894		309,602
Other gas assets	66,058		66,058		66,058		221,226
Total Property, Plant and Equipment	8,941,426		8,941,426		8,941,426		9,316,495
Less: Accumulated Depreciation, Depletion and Amortization	2,399,555		2,399,555		2,399,555		3,526,742
Total Property, Plant and Equipment Assets Held for Sale - Net	230,593		230,593		230,593
Total Property, Plant and Equipment—Net	$ 6,772,464		$ 6,772,464		$ 6,772,464		$ 5,789,753
Knox and Coalfield [Member]
Property, Plant and Equipment [Line Items]
Impairment on Knox		$ 137,865
Joint Venture [Member]
Property, Plant and Equipment [Line Items]
Ownership percentage in equity method investment	50.00%		50.00%		50.00%
Drilling Carry, Working Interest Obligations					50.00%
Joint Venture [Member] | Utica Shale [Member]
Property, Plant and Equipment [Line Items]
Area of Land | a	125		125		125
Joint Venture [Member] | Hess [Member]
Property, Plant and Equipment [Line Items]
Drilling commitment carry	$ 335,000		$ 335,000		$ 335,000

Revolving Credit Facilities (De

Revolving Credit Facilities (Details)	Mar. 08, 2018USD ($)	Mar. 31, 2018USD ($)	Jun. 30, 2018USD ($)	Mar. 07, 2018USD ($)	Dec. 31, 2017USD ($)
Short-term Debt [Line Items]
Value of proved reserves, percentage to mortgage		80.00%
Revolving Credit Facility [Member]
Short-term Debt [Line Items]
Credit facility, face amount	$ 2,100,000,000			$ 1,500,000,000
Accordion feature, increased commitment	3,000,000,000
Initial borrowing base	2,500,000,000			2,000,000,000
Letters of credit aggregate sub-limit	$ 650,000,000
Minimum threshold to activate springing maturity date		$ 500,000,000
Maximum net leverage ratio	4
Minimum current ratio	1
Borrowings outstanding			$ 422,000,000		$ 0
Letters of credit outstanding			251,342,000		239,072,000
Borrowings and issuance of letters of credit remaining capacity			$ 1,426,658,000		$ 1,260,928,000
5.875% Senior Notes due 2022 [Member]
Short-term Debt [Line Items]
Stated rate, debt instrument			5.875%
8.00% Senior Notes due 2023 [Member]
Short-term Debt [Line Items]
Stated rate, debt instrument			8.00%
CNXM [Member] | Revolving Credit Facility [Member]
Short-term Debt [Line Items]
Letters of credit aggregate sub-limit	$ 600,000,000			$ 250,000,000
Borrowings outstanding			$ 11,000,000
Secured leverage ratio	3.5
Interest coverage ratio	2.5
CNXM [Member] | Minimum [Member] | Revolving Credit Facility [Member]
Short-term Debt [Line Items]
Maximum net leverage ratio	4.75
CNXM [Member] | Maximum [Member] | Revolving Credit Facility [Member]
Short-term Debt [Line Items]
Maximum net leverage ratio	5.50

Long-Term Debt (Details)

Long-Term Debt (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Mar. 08, 2018	Mar. 07, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Gain (loss) on extinguishment of debt	$ 23,413,000	$ 36,000	$ 39,048,000	$ (786,000)
Senior Notes due March 2026 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	400,000,000		400,000,000
Senior Notes Due April 2022 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	1,314,307,000		1,314,307,000				$ 1,705,682,000
Repurchase amount on debt instrument	391,375,000		391,375,000
Gain (loss) on extinguishment of debt		36,000	15,635,000	(786,000)
Debt Instrument, Purchase of Outstanding Debt		$ 19,069,000		$ 119,025,000
Senior Notes due April 2023 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	200,000,000		200,000,000				$ 500,000,000
Repurchase amount on debt instrument	300,000,000		300,000,000
Gain (loss) on extinguishment of debt			23,413,000
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt instrument, face amount					$ 2,100,000,000	$ 1,500,000,000
CNXM [Member] | Senior Notes due March 2026 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	$ 400,000,000		$ 400,000,000
Stated rate, debt instrument	6.50%		6.50%
Unamortized bond discount	$ 6,000,000		$ 6,000,000

Schedule of Long-Term Debt (Det

Schedule of Long-Term Debt (Details) - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Long-term debt, gross	$ 2,330,780,000	$ 2,187,289,000
Less: Unamortized Debt Issuance Costs	11,474,000	17,536,000
Less: Amounts Due in One Year	0	263,000
Long-Term Debt	2,330,780,000	2,187,026,000
Current portion of capital lease obligation	6,915,000	6,848,000
Senior Notes Due April 2022 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	1,314,307,000	1,705,682,000
Debt instrument, unamortized premium	2,416,000	3,544,000
Long-term debt, gross	1,316,723,000	1,709,226,000
Senior Notes due April 2023 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	200,000,000	500,000,000
Debt instrument, unamortized discount	1,720,000	4,751,000
Long-term debt, gross	198,281,000	495,249,000
Senior Notes due March 2026 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	400,000,000
Debt instrument, unamortized discount	5,750,000
Long-term debt, gross	394,250,000	0
Other Note Maturing in 2018 [Member]
Debt Instrument [Line Items]
Debt instrument, face amount		358,000
Debt instrument, unamortized discount		8,000
Long-term debt, gross	0	350,000
CNX Revolving Credit Facility [Member] | Revolving Credit Facility - CNXM [Member]
Debt Instrument [Line Items]
Long-term debt, gross	422,000,000	0
CNX Midstream Partners LP Revolving Credit Facility [Member] | Revolving Credit Facility - CNXM [Member]
Debt Instrument [Line Items]
Long-term debt, gross	$ 11,000,000	$ 0

Amount of Commitment Expiration

Amount of Commitment Expiration Per Period (Details) $ in Thousands	Jun. 30, 2018USD ($)
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	$ 291,480
Less Than 1 Year [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	289,911
1-3 Years [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	1,569
3-5 Years [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Beyond 5 Years [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Standby Letters of Credit [Member] | Firm Transportation [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	251,057
Standby Letters of Credit [Member] | Other Commitments [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	285
Standby Letters of Credit [Member] | Loss Contingencies by Secondary Nature of Contingency [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	251,342
Standby Letters of Credit [Member] | Less Than 1 Year [Member] | Firm Transportation [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	251,057
Standby Letters of Credit [Member] | Less Than 1 Year [Member] | Other Commitments [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	285
Standby Letters of Credit [Member] | Less Than 1 Year [Member] | Loss Contingencies by Secondary Nature of Contingency [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	251,342
Standby Letters of Credit [Member] | 1-3 Years [Member] | Firm Transportation [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Standby Letters of Credit [Member] | 1-3 Years [Member] | Other Commitments [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Standby Letters of Credit [Member] | 1-3 Years [Member] | Loss Contingencies by Secondary Nature of Contingency [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Standby Letters of Credit [Member] | 3-5 Years [Member] | Firm Transportation [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Standby Letters of Credit [Member] | 3-5 Years [Member] | Other Commitments [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Standby Letters of Credit [Member] | 3-5 Years [Member] | Loss Contingencies by Secondary Nature of Contingency [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Standby Letters of Credit [Member] | Beyond 5 Years [Member] | Firm Transportation [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Standby Letters of Credit [Member] | Beyond 5 Years [Member] | Other Commitments [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Standby Letters of Credit [Member] | Beyond 5 Years [Member] | Loss Contingencies by Secondary Nature of Contingency [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Surety Bond [Member] | Other Commitments [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	12,315
Surety Bond [Member] | Employee Related Commitments [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	1,850
Surety Bond [Member] | Environment Related Commitments [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	25,973
Surety Bond [Member] | Loss Contingencies by Secondary Nature of Contingency [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	40,138
Surety Bond [Member] | Less Than 1 Year [Member] | Other Commitments [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	10,805
Surety Bond [Member] | Less Than 1 Year [Member] | Employee Related Commitments [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	1,850
Surety Bond [Member] | Less Than 1 Year [Member] | Environment Related Commitments [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	25,914
Surety Bond [Member] | Less Than 1 Year [Member] | Loss Contingencies by Secondary Nature of Contingency [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	38,569
Surety Bond [Member] | 1-3 Years [Member] | Other Commitments [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	1,510
Surety Bond [Member] | 1-3 Years [Member] | Employee Related Commitments [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Surety Bond [Member] | 1-3 Years [Member] | Environment Related Commitments [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	59
Surety Bond [Member] | 1-3 Years [Member] | Loss Contingencies by Secondary Nature of Contingency [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	1,569
Surety Bond [Member] | 3-5 Years [Member] | Other Commitments [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Surety Bond [Member] | 3-5 Years [Member] | Employee Related Commitments [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Surety Bond [Member] | 3-5 Years [Member] | Environment Related Commitments [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Surety Bond [Member] | 3-5 Years [Member] | Loss Contingencies by Secondary Nature of Contingency [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Surety Bond [Member] | Beyond 5 Years [Member] | Other Commitments [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Surety Bond [Member] | Beyond 5 Years [Member] | Employee Related Commitments [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Surety Bond [Member] | Beyond 5 Years [Member] | Environment Related Commitments [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	0
Surety Bond [Member] | Beyond 5 Years [Member] | Loss Contingencies by Secondary Nature of Contingency [Member]
Schedule of Costs Related to Purchase Obligations [Line Items]
Guarantor obligations, maximum exposure	$ 0

Operating Lease Obligations Due

Operating Lease Obligations Due (Details) $ in Thousands	Jun. 30, 2018USD ($)
Commitments and Contingencies Disclosure [Abstract]
Less than 1 year	$ 9,607
1 - 3 years	13,325
3 - 5 years	10,756
More than 5 years	38,477
Total Operating Lease Obligations	$ 72,165

Unrecorded Unconditional Purcha

Unrecorded Unconditional Purchase Obligation (Details) - Purchase Commitment [Member] $ in Thousands	Jun. 30, 2018USD ($)
Unrecorded Unconditional Purchase Obligation [Line Items]
Less than 1 year	$ 207,148
1 - 3 years	419,091
3 - 5 years	306,479
More than 5 years	620,806
Total Purchase Obligations	$ 1,553,524

Notional Amounts of Derivative

Notional Amounts of Derivative Instruments (Details) - MMcf MMcf in Billions	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Commodity Member [Member]
Derivative [Line Items]
Notional amount	1,064.1	1,067.2
Basis Swap [Member]
Derivative [Line Items]
Notional amount	775.5	688.1

Derivative Instruments Fair Val

Derivative Instruments Fair Value of Derivative Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Commodity Swaps [Member]
Asset Derivative Instruments
Prepaid Expense	$ 27,226	$ 62,369
Other Assets	132,594	59,281
Total Asset	159,820	121,650
Liability Derivative Instruments
Other Accrued Liabilities	26,943	5,985
Other Liabilities	10,381	42,419
Total Liability	37,324	48,404
Basis Swap [Member]
Asset Derivative Instruments
Prepaid Expense	10,932	14,965
Other Assets	35,101	24,223
Total Asset	46,033	39,188
Liability Derivative Instruments
Other Accrued Liabilities	26,969	35,306
Other Liabilities	20,557	17,179
Total Liability	$ 47,526	$ 52,485

The Effect of Derivative Instru

The Effect of Derivative Instruments on the Consolidated Statement of Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Derivative [Line Items]
Cash Received (Paid) in Settlement of Commodity Derivative Instruments:	$ 16,684	$ (32,285)	$ (307)	$ (79,388)
Unrealized Gain (Loss) on Commodity Derivative Instruments:	8,976	116,073	61,054	140,713
Gain (Loss) on Commodity Derivative Instruments:	25,660	83,788	60,747	61,325
Basis Swap [Member]
Derivative [Line Items]
Cash Received (Paid) in Settlement of Commodity Derivative Instruments:	(374)	(16,776)	(16,931)	(38,056)
Unrealized Gain (Loss) on Commodity Derivative Instruments:	(37,474)	45,791	11,804	(93,320)
Gain (Loss) on Commodity Derivative Instruments:	(37,848)	29,015	(5,127)	(131,376)
Natural Gas [Member] | Commodity Swaps [Member]
Derivative [Line Items]
Cash Received (Paid) in Settlement of Commodity Derivative Instruments:	17,058	(15,509)	16,624	(40,116)
Unrealized Gain (Loss) on Commodity Derivative Instruments:	46,450	70,282	49,250	232,886
Gain (Loss) on Commodity Derivative Instruments:	63,508	54,773	65,874	192,770
Propane [Member] | Commodity Swaps [Member]
Derivative [Line Items]
Cash Received (Paid) in Settlement of Commodity Derivative Instruments:	0	0	0	(1,216)
Unrealized Gain (Loss) on Commodity Derivative Instruments:	0	0	0	1,147
Gain (Loss) on Commodity Derivative Instruments:	$ 0	$ 0	$ 0	$ (69)

Financial Instruments Measured

Financial Instruments Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Gas Derivatives	$ 0	$ 0
Put Option	0	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Gas Derivatives	121,003	59,949
Put Option	0	(3,500)
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Gas Derivatives	0	0
Put Option	$ 0	$ 0

Fair Value Disclosures (Details

Fair Value Disclosures (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents	$ 54,846	$ 509,167	$ 291,535	$ 46,299
Long-Term Debt	2,330,780	2,187,289
Long-term Debt, Fair Value	2,329,810	2,281,282
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents	54,846	509,167
Long-Term Debt	$ 2,342,254	$ 2,204,825

Variable Interest Entities (Det

Variable Interest Entities (Details) - USD ($) $ in Thousands	Mar. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017
Variable Interest Entity [Line Items]
Payable to affiliates		$ 9,495		$ 9,982
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Variable interest entity, ownership percentage		34.00%
CNX Midstream Partners LP [Member] | Senior Notes due March 2026 [Member]
Variable Interest Entity [Line Items]
Stated rate, debt instrument			6.50%
Shirley-Penns System [Member]
Variable Interest Entity [Line Items]
Ownership percentage by parent			95.00%
Cash consideration transferred	$ 265,000

Variable Interest Entities Bala

Variable Interest Entities Balance Sheet (Details) - Variable Interest Entity, Primary Beneficiary [Member] $ in Thousands	Jun. 30, 2018USD ($)
ASSETS
Total Assets	$ 819,058
Liabilities:
Total Liabilities	445,707
Cash [Member]
ASSETS
Current assets	707
Receivables - Related Party [Member]
ASSETS
Current assets	12,072
Receivables Excluding Third Party [Member]
ASSETS
Current assets	7,546
Other Current Assets [Member]
ASSETS
Current assets	2,726
Property, Plant and Equipment [Member]
ASSETS
Non-current assets	792,513
Other Noncurrent Assets [Member]
ASSETS
Non-current assets	3,494
Accounts Payable [Member]
Liabilities:
Current liabilities	38,327
Accounts Payable - Related Party [Member]
Liabilities:
Current liabilities	3,211
Revolving Credit Facility [Member]
Liabilities:
Current liabilities	11,000
Long-term Debt [Member]
Liabilities:
Non-current liabilities	$ 393,169

Variable Interest Entities Stat

Variable Interest Entities Statement of Operations and Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Variable Interest Entity [Line Items]
Total Revenue	$ 402,124	$ 371,068	$ 897,853	$ 690,996
(Gain) Loss on Asset Sales	(3,280)	(134,581)	(14,622)	(138,577)
Interest Expense	38,438	40,683	76,989	82,289
Total Expense	371,832	191,303	108,321	649,659
Net Income	42,014	$ 169,510	569,577	130,544
Net Cash Provided by Operating Activities			450,930	300,472
Net Cash Used in Investing Activities			(638,861)	96,525
Net Cash Used in Financing Activities			(266,390)	$ (151,761)
Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Gathering Revenue - Related Party	37,576		75,306
Gathering Revenue - Third Party	23,438		49,577
Total Revenue	61,014		124,883
Operating Expense - Related Party	5,079		9,514
Operating Expense - Third Party	7,406		15,874
General and Administrative Expense - Related Party	3,619		7,232
General and Administrative Expense - Third Party	2,320		4,868
(Gain) Loss on Asset Sales	(254)		2,501
Depreciation Expense	5,443		11,299
Interest Expense	7,119		9,608
Total Expense	30,732		60,896
Net Income	30,282		63,987
Net Cash Provided by Operating Activities	53,674		95,541
Net Cash Used in Investing Activities	(24,969)		(35,125)
Net Cash Used in Financing Activities	$ (29,964)		$ (62,903)

Variable Interest Entities Inve

Variable Interest Entities Investment in Affiliates (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Equity Method [Roll Forward]
Balance at December 31, 2016		$ 175,371	$ 169,208	$ 169,208
Equity in Earnings		3,447	22,385	48,346
Distributions				(42,183)
Asset Transfer				0
Balance at December 31, 2017				175,371
CNX Gathering LLC [Member]
Equity Method [Roll Forward]
Balance at December 31, 2016		141,117	151,075	151,075
Equity in Earnings				9,823
Distributions				(17,254)
Asset Transfer				(2,527)
Balance at December 31, 2017				141,117
CNXM [Member]
Equity Method [Roll Forward]
Balance at December 31, 2016		$ 34,254	18,133	18,133
Equity in Earnings				38,523
Distributions				(24,929)
Asset Transfer				2,527
Balance at December 31, 2017				$ 34,254
Other Operating Income (Expense) [Member] | CNX Gathering LLC [Member]
Equity Method [Roll Forward]
Equity in Earnings	$ 284		2,150
Other Operating Income (Expense) [Member] | CNXM [Member]
Equity Method [Roll Forward]
Equity in Earnings	9,712		19,784
Transportation, Gathering and Compression [Member] | CNX Gathering LLC [Member]
Equity Method [Roll Forward]
Equity in Earnings	232		485
Transportation, Gathering and Compression [Member] | CNXM [Member]
Equity Method [Roll Forward]
Equity in Earnings	$ 31,695		$ 65,749

Segment Information (Details)

Segment Information (Details) - segment	6 Months Ended
	Jun. 30, 2018	Dec. 14, 2017
Segment Reporting Information [Line Items]
Number of Divisions	2
E&P Division [Member]
Segment Reporting Information [Line Items]
Number of reportable segments	4
CNX Gathering LLC [Member]
Segment Reporting Information [Line Items]
Ownership percentage in equity method investment	50.00%	50.00%
Variable Interest Entity, Primary Beneficiary [Member]
Segment Reporting Information [Line Items]
Variable interest entity, ownership percentage	34.00%

Industry Segment Results (Detai

Industry Segment Results (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information [Line Items]
(Loss) Gain on Commodity Derivative Instruments	$ 25,660	$ 83,788	$ 60,747	$ 61,325
Other Operating Income	8,534	16,658	19,244	32,308
Earnings (Loss) From Continuing Operations Before Income Tax	30,292	179,765	789,532	41,337
Segment Assets	8,207,758	9,025,195	8,207,758	9,025,195	$ 6,931,913
Depreciation, Depletion and Amortization	119,087	91,640	243,754	187,318
Capital Expenditures	264,174	145,839	496,659	249,962
Total Revenue	402,124	371,068	897,853	690,996
Equity in earnings of unconsolidated affiliates			3,447	22,385	48,346
Investments in unconsolidated equity affiliates					$ 175,371	$ 169,208
Operating Segments [Member]
Segment Reporting Information [Line Items]
Equity in earnings of unconsolidated affiliates	1,669	10,055	3,447	22,385
Investments in unconsolidated equity affiliates	22,347	188,649	22,347	188,649
NJR Energy Services Company [Member]
Segment Reporting Information [Line Items]
Total Revenue	36,849	34,733	115,845	91,763
Direct Energy Business Marketing LLC [Member]
Segment Reporting Information [Line Items]
Total Revenue	34,644	40,273	92,571	86,639
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
(Loss) Gain on Commodity Derivative Instruments	0	0	0	0
Other Operating Income	0	0	0	0
Earnings (Loss) From Continuing Operations Before Income Tax	(39,628)	129,070	584,268	129,813
Segment Assets	333,372	2,830,375	333,372	2,830,375
Depreciation, Depletion and Amortization	0	0	0	0
Capital Expenditures	0	0	0	0
Total Revenue	0	0	0	0
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
(Loss) Gain on Commodity Derivative Instruments	0		0
Other Operating Income	(61)		(142)
Earnings (Loss) From Continuing Operations Before Income Tax	0		0
Segment Assets	(11,166)	0	(11,166)	0
Depreciation, Depletion and Amortization	0		0
Capital Expenditures	0		0
Total Revenue	(37,903)		(75,908)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	367,930	270,622	817,862	597,363
Earnings (Loss) From Continuing Operations Before Income Tax	69,920	50,695	205,264	(88,476)
Operating Segments [Member] | Marcellus Shale [Member]
Segment Reporting Information [Line Items]
(Loss) Gain on Commodity Derivative Instruments	9,128	(21,545)	(385)	(54,210)
Other Operating Income	0	0	0	0
Earnings (Loss) From Continuing Operations Before Income Tax	47,273	16,411	91,515	46,380
Total Revenue	187,433	132,879	382,936	289,389
Operating Segments [Member] | Utica Shale [Member]
Segment Reporting Information [Line Items]
(Loss) Gain on Commodity Derivative Instruments	5,371	(2,063)	897	(4,751)
Other Operating Income	0	0	0	0
Earnings (Loss) From Continuing Operations Before Income Tax	46,486	9,063	102,593	26,870
Total Revenue	113,129	37,387	238,977	88,367
Operating Segments [Member] | Coalbed Methane [Member]
Segment Reporting Information [Line Items]
(Loss) Gain on Commodity Derivative Instruments	2,155	(6,788)	(275)	(15,987)
Other Operating Income	0	0	0	0
Earnings (Loss) From Continuing Operations Before Income Tax	12,405	(36)	25,522	3,572
Total Revenue	49,037	45,185	104,108	94,613
Operating Segments [Member] | Other Gas [Member]
Segment Reporting Information [Line Items]
(Loss) Gain on Commodity Derivative Instruments	9,006	114,184	60,510	136,273
Other Operating Income	8,595	16,658	19,386	32,308
Earnings (Loss) From Continuing Operations Before Income Tax	(64,039)	25,257	(77,695)	(165,298)
Total Revenue	29,103	155,617	122,237	218,627
E&P [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
(Loss) Gain on Commodity Derivative Instruments	25,660	83,788	60,747	61,325
Other Operating Income	8,595	16,658	19,386	32,308
Earnings (Loss) From Continuing Operations Before Income Tax	42,125	50,695	141,935	(88,476)
Segment Assets	6,055,545	6,194,820	6,055,545	6,194,820
Depreciation, Depletion and Amortization	111,125	91,640	226,991	187,318
Capital Expenditures	238,889	145,839	455,397	249,962
Total Revenue	378,702	371,068	848,258	690,996
CNXM [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
(Loss) Gain on Commodity Derivative Instruments	0		0
Other Operating Income	0		0
Earnings (Loss) From Continuing Operations Before Income Tax	27,795	0	63,329	0
Segment Assets	1,830,007	0	1,830,007	0
Depreciation, Depletion and Amortization	7,962		16,763
Capital Expenditures	25,285		41,262
Total Revenue	61,325		125,503
Oil and Gas [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	334,517	260,306	740,140	578,069
Oil and Gas [Member] | Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	0	0	0	0
Oil and Gas [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	0		0
Oil and Gas [Member] | Operating Segments [Member] | Marcellus Shale [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	178,305	154,424	383,321	343,599
Oil and Gas [Member] | Operating Segments [Member] | Utica Shale [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	107,758	39,450	238,080	93,118
Oil and Gas [Member] | Operating Segments [Member] | Coalbed Methane [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	46,882	51,973	104,383	110,600
Oil and Gas [Member] | Operating Segments [Member] | Other Gas [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	1,572	14,459	14,356	30,752
Oil and Gas [Member] | E&P [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	334,517	260,306	740,140	578,069
Oil and Gas [Member] | CNXM [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	0		0
Purchased Gas Revenue [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	9,930	10,316	27,985	19,294
Purchased Gas Revenue [Member] | Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	0	0	0	0
Purchased Gas Revenue [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	0		0
Purchased Gas Revenue [Member] | Operating Segments [Member] | Marcellus Shale [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	0	0	0	0
Purchased Gas Revenue [Member] | Operating Segments [Member] | Utica Shale [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	0	0	0	0
Purchased Gas Revenue [Member] | Operating Segments [Member] | Coalbed Methane [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	0	0		0
Purchased Gas Revenue [Member] | Operating Segments [Member] | Other Gas [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	9,930	10,316	27,985	19,294
Purchased Gas Revenue [Member] | E&P [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	9,930	10,316	27,985	19,294
Purchased Gas Revenue [Member] | CNXM [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	0		0
Midstream Revenue [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	23,483	$ 0	49,737	$ 0
Midstream Revenue [Member] | Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	0		0
Midstream Revenue [Member] | Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	(37,842)		(75,766)
Midstream Revenue [Member] | Operating Segments [Member] | Marcellus Shale [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	0		0
Midstream Revenue [Member] | Operating Segments [Member] | Utica Shale [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	0		0
Midstream Revenue [Member] | Operating Segments [Member] | Coalbed Methane [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	0		0
Midstream Revenue [Member] | Operating Segments [Member] | Other Gas [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	0		0
Midstream Revenue [Member] | E&P [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	0		0
Midstream Revenue [Member] | CNXM [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenue from Contracts with Customers	$ 61,325		$ 125,503

Segment Information Reconciliat

Segment Information Reconciliation of Segment Information, Revenue and Other Operating Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenue, Major Customer [Line Items]
Gain on Commodity Derivative Instruments	$ 25,660	$ 83,788	$ 60,747	$ 61,325
Other Operating Income	8,534	16,658	19,244	32,308
Total Revenue	402,124	371,068	897,853	690,996
Operating Segments [Member]
Revenue, Major Customer [Line Items]
Total Segment Revenue from Contracts with External Customers	$ 367,930	$ 270,622	$ 817,862	$ 597,363

Reconciliation of Segment Infor

Reconciliation of Segment Information, Income (Loss) From Continuing Operations Before Income Tax (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total Segment Income (Loss) Before Income Taxes for reportable business segments	$ 30,292	$ 179,765	$ 789,532	$ 41,337
Other (Expense) Income	(575)	(5,475)	5,917	(9,550)
Gain on Certain Asset Sales	3,280	134,581	14,622	138,577
(Loss) Gain on Debt Extinguishment	(23,413)	(36)	(39,048)	786
Impairment of Other Intangible Assets	(18,650)	0	(18,650)	0
Income From Continuing Operations Before Income Tax	30,292	179,765	789,532	41,337
Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total Segment Income (Loss) Before Income Taxes for reportable business segments	69,920	50,695	205,264	(88,476)
Income From Continuing Operations Before Income Tax	69,920	50,695	205,264	(88,476)
Corporate, Non-Segment [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total Segment Income (Loss) Before Income Taxes for reportable business segments	(39,628)	129,070	584,268	129,813
Other (Expense) Income	(575)	(5,475)	5,917	(9,550)
Gain on Certain Asset Sales	3,010	134,581	12,386	138,577
Gain on Previously Held Equity Interest	0	0	623,663	0
(Loss) Gain on Debt Extinguishment	(23,413)	(36)	(39,048)	786
Impairment of Other Intangible Assets	(18,650)	0	(18,650)	0
Income From Continuing Operations Before Income Tax	(39,628)	129,070	584,268	129,813
Total E&P [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total Segment Income (Loss) Before Income Taxes for reportable business segments	42,125	50,695	141,935	(88,476)
Income From Continuing Operations Before Income Tax	42,125	50,695	141,935	(88,476)
Midstream [Member] | Operating Segments [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total Segment Income (Loss) Before Income Taxes for reportable business segments	27,795	0	63,329	0
Income From Continuing Operations Before Income Tax	$ 27,795	$ 0	$ 63,329	$ 0

Reconciliation of Segment Inf82

Reconciliation of Segment Information, Total Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017
ASSETS
Segment assets for total reportable business segments	$ 8,207,758	$ 6,931,913	$ 9,025,195
Items excluded from segment assets:
Recoverable Income Taxes	27,780	31,523
Total Consolidated Assets	8,207,758	$ 6,931,913	9,025,195
Intersegment Eliminations [Member]
ASSETS
Segment assets for total reportable business segments	(11,166)		0
Items excluded from segment assets:
Total Consolidated Assets	(11,166)		0
Segment Reconciling Items [Member]
Items excluded from segment assets:
Cash and Cash Equivalents	54,846		291,535
Recoverable Income Taxes	27,780		112,073
Deferred Income Taxes	0		0
Assets Held for Sale	250,746		0
Discontinued Operations	0		2,426,767
E&P [Member] | Operating Segments [Member]
ASSETS
Segment assets for total reportable business segments	6,055,545		6,194,820
Items excluded from segment assets:
Total Consolidated Assets	6,055,545		6,194,820
Midstream [Member] | Operating Segments [Member]
ASSETS
Segment assets for total reportable business segments	1,830,007		0
Items excluded from segment assets:
Total Consolidated Assets	$ 1,830,007		$ 0

Related Party Transaction (Deta

Related Party Transaction (Details) - CONSOL Energy [Member] - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Account payable to related parties	$ 75
Due from related parties		$ 12,540
Due to related parties	11,351	15,415
Total Current Liabilities [Member]
Related Party Transaction [Line Items]
Due to related parties	5,063	4,500
Total Deferred Credits and Other Liabilities [Member]
Related Party Transaction [Line Items]
Due to related parties	$ 6,288	$ 10,915

Stock Repurchase (Details)

Stock Repurchase (Details) - USD ($)	6 Months Ended
	Jun. 30, 2018	Oct. 30, 2017	Sep. 30, 2017
Stock Repurchase [Abstract]
Stock repurchase program, authorized amount		$ 450,000,000	$ 200,000,000
Shares repurchased during period (in shares)	11,086,082
Shares repurchased, average price (in usd per share)	$ 15.20
Total value of shares repurchased	$ 168,719,000

Goodwill and Other Intangible85

Goodwill and Other Intangible Assets (Details) - USD ($)	1 Months Ended	3 Months Ended		6 Months Ended
	May 31, 2018	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Jan. 03, 2018	Dec. 31, 2017	Dec. 14, 2017
Goodwill [Line Items]
Goodwill		$ 796,359,000		$ 796,359,000			$ 0
Impairment of Other Intangible Assets		18,650,000	$ 0	18,650,000	$ 0
Amortization expense		$ 1,733,000	$ 0	$ 3,655,000	$ 0
Useful life, customer relationship intangible assets				17 years
Midstream Acquisition [Member]
Goodwill [Line Items]
Goodwill						$ 796,359,000
Other intangible assets						$ 128,781,000
CNX Gathering LLC [Member]
Goodwill [Line Items]
Ownership percentage in equity method investment		50.00%		50.00%				50.00%
Customer Relationships [Member] | Midstream [Member]
Goodwill [Line Items]
Impairment of Other Intangible Assets	$ 18,650,000			$ 18,650,000

Goodwill and Other Intangible86

Goodwill and Other Intangible Assets Changes in Carrying Amount of Goodwill (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2018USD ($)
Goodwill [Roll Forward]
December 31, 2017	$ 0
June 30, 2018	796,359
Midstream Acquisition [Member]
Goodwill [Roll Forward]
Acquisitions	$ 796,359

Goodwill and Other Intangible87

Goodwill and Other Intangible Assets Carrying Amount and Accumulated Amortization of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Customer Relationships	$ 128,781		$ 128,781
Less: Impairment of Other Intangible Assets	(18,650)	$ 0	(18,650)	$ 0
Less: Accumulated Amortization for Customer Relationships	(3,655)		(3,655)
Total Other Intangible Assets, net	$ 106,476		$ 106,476

Goodwill and Other Intangible88

Goodwill and Other Intangible Assets Estimated Future Annual Amortization Expense (Details) $ in Thousands	Jun. 30, 2018USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Estimated annual amortization expense, Year 2019	$ 6,552
Estimated annual amortization expense, Year 2020	6,552
Estimated annual amortization expense, Year 2021	6,552
Estimated annual amortization expense, Year 2022	6,552
Estimated annual amortization expense, Year 2023	$ 6,552