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UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - shares
Jun. 30, 2020
Dec. 31, 2019
Common units issued (in units) 122,579,218 122,579,218
Common units outstanding (in units) 122,579,218 122,579,218
Class A Convertible Preferred Stock Units    
Number preferred units issued (in units) 25,336,778 25,336,778
Number of preferred units outstanding (in units) 25,336,778 25,336,778
Redeemable Noncontrolling Interest Preferred Units    
Number preferred units issued (in units) 131,750 130,000
Number of preferred units outstanding (in units) 131,750 130,000