EMERGENCE FROM VOLUNTARY REORGANIZATION UNDER CHAPTER 11 (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands			5 Months Ended	12 Months Ended
	Jun. 04, 2018	Mar. 13, 2018	Jun. 02, 2018	Dec. 31, 2019	Oct. 31, 2019	Dec. 31, 2018	May 31, 2018
Bankruptcy proceedings, date petition for bankruptcy filed				Apr. 02, 2018
Bankruptcy proceedings, description of proceedings				On April 2, 2018 (the "Petition Date"), the Debtors commenced the Chapter 11 Cases in the Bankruptcy Court. The Debtors filed motions with the Bankruptcy Court seeking operational and procedural relief, including joint administration of their Chapter 11 Cases. The Debtors' Chapter 11 proceedings were jointly administered under the caption In re EV Energy Partners, L.P., et al., Case No. 18-10814.
Plan of reorganization, date plan confirmed				May 17, 2018
Plan of reorganization, date plan is effective				Jun. 04, 2018
Plan of reorganization, terms of plan				In accordance with the Plan, on the Effective Date:The Successor issued (i) 9,500,000 new shares of its common stock, par value $0.01 per share ("common stock") pro rata to holders of the Senior Notes with claims allowed under the Plan; (ii) 500,016 shares of common stock pro rata to holders of units of EVEP prior to the Effective Date; (iii) 800,000 warrants (the "Warrants") to purchase 800,000 shares of the Company's common stock to holders of units of EVEP prior to the Effective Date exercisable for a five-year period commencing on the Effective Date entitling their holders upon exercise thereof, on a pro rata basis, to 8% of the total issued and outstanding common stock (including common stock as of the Effective Date issuable upon full exercise of the Warrants, but excluding any common stock issuable under the Company's Management Incentive Plan (the "MIP")), at a per share exercise price of $37.48; (iv) 79,000 shares of 8% Cumulative Nonparticipating Redeemable Series A Preferred Stock (the "Series A Preferred Stock") to its indirectly wholly-owned subsidiary EV Midstream, L.P. for consideration of $790,000; and (v) 21,000 shares of Series A Preferred Stock to one employee of the Company and one employee of EnerVest for consideration of services to the Company, which vest on the earlier of (i) June 4, 2019 or (ii) immediately prior to the consummation of a Sale Transaction as such term is defined in the Certificate of Designations, Preferences and Rights of the Series A Preferred Stock (the "Certificate of Designations");The holders of claims under the Predecessor's credit facility received full recovery, consisting of (i) their pro rata share of the $1 billion new reserve-based revolving loan (the "Exit Credit Facility"), as further discussed in Note 12; (ii) cash in amount equal to the accrued but unpaid interest payable to such lenders under the credit facility as of the Effective Date; and (iii) unfunded commitments and letter of credit participation under the Exit Credit Facility equal to the unfunded commitments and letter of credit participation of such lender;The Senior Notes were cancelled and the Predecessor's liability thereunder discharged, and the holders of the Notes received (directly or indirectly) their pro rata share of New Common Stock representing, in the aggregate, 95% of the New Common Stock on the Effective Date (subject to dilution by the MIP and the common shares issuable upon exercise of the Warrants);The Predecessor's common units were cancelled, and each common unitholder received its pro rata share of: (i) 5% of the New Common Shares and (ii) the Warrants;The holders of administrative expense claims, other priority claims and general unsecured creditors of the Predecessor received in exchange for their claims payment in full in cash or otherwise had their rights unimpaired under Title 11 of the United States Code;The Successor entered into a registration rights agreement (the "Registration Rights Agreement") with certain recipients of shares of its common stock pursuant to which the Successor agreed to, among other things, file a shelf registration statement (the "Initial Shelf Registration Statement");The Successor adopted the MIP, pursuant to which employees, directors, consultants and other service providers of the Company and its subsidiaries are eligible to receive stock options, stock appreciation rights, restricted stock, restricted stock units, other stock-based awards and cash-based awards;The terms of the Predecessor's board of directors automatically expired on the Effective Date. The Successor formed a new five-member board of directors; andGeneral unsecured claims received, (i) payment in full, in cash, or the unpaid portion of its allowed general unsecured claim, (ii) payment in the ordinary course, or (iii) other treatment, as may be agreed upon by the Debtors, the Supporting Noteholders and the holder of such general unsecured claim; andThe Company converted from a limited partnership to a corporation.
Common stock, par value	$ 0.01			$ 0.01		$ 0.01	$ 0.01
Class of warrant or right, outstanding	800,000
Class of warrant or right, number of securities called by warrants or rights	800,000
Class of warrant or right exercisable period	5 years
Percentage of common stock outstanding	8.00%
Class of warrant or right, exercise price of warrants or rights	$ 37.48				$ 30.48
Number of units and/or rights that may be awarded under long-term incentive plan							5,000,000
Restructuring Support Agreement percentage of senior notes holders		70.00%
Plan support agreement lenders percentage of loans related to credit facility		94.00%
Pro Rata Share Percentage of New Common Stock for Predecessor Unitholders	5.00%
Stock and warrants issued during period, value, preferred stock and warrants			$ 9,345
Credit facility, maximum borrowing capacity	$ 1,000,000
8.0% Senior Notes due 2019
Debt instrument interest rate stated percentage		8.00%					8.00%
Series A Preferred Stock [Member]
Preferred stock, dividend rate, percentage	8.00%
Senior Note Holders [Member]
Pro Rata Share Percentage of New Common Stock for Predecessor Unitholders	95.00%
Shares issued	9,500,000
Predecessor Unit Holders [Member]
Shares issued	500,016
EV Midstream L.P. [Member] | Series A Preferred Stock [Member]
Shares issued	79,000
Stock and warrants issued during period, value, preferred stock and warrants	$ 790,000
Share-based Payment Arrangement, Employee [Member] | Series A Preferred Stock [Member]
Shares issued	21,000