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RECAPITALIZATION TRANSACTION - Summary of Net Cash Received by Altus Midstream LP (Details) - USD ($)
$ in Thousands
7 Months Ended 12 Months Ended
Nov. 09, 2018
Aug. 07, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Noncontrolling Interest [Line Items]          
Cash from private placement $ 572,340        
Cash remaining from initial public offering (net of redemptions) 84,339        
Issuance of newly-created Class C Common Stock to Apache 25        
Less: deferred underwriter fees (13,206)        
Less: closing fees and other (15,344)        
Redeemable noncontrolling interest - Preferred Unit limited partners, net $ 628,154   $ 0 $ 628,154 $ 0
Class A Common Stock          
Noncontrolling Interest [Line Items]          
Stock redeemed (in shares)   29,469,858 29,469,858    
Stock redeemed value     $ 298,800