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Intangible Assets (Details) - Solaris Midstream Holdings, LLC and Subsidiaries - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Intangible Assets    
Gross Value $ 365,032 $ 365,032
Accumulated Amortization (51,951) (27,497)
Net Carrying Value $ 313,081 $ 337,535