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Intangible Assets - Future Amortization Expenses (Details) - Solaris Midstream Holdings, LLC and Subsidiaries
$ in Thousands
Sep. 30, 2021
USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]  
Remaining 2021 $ 8,151
2022 36,735
2023 37,404
2024 36,888
2025 35,050
Thereafter $ 158,853