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Shareholders' Equity / Partners' Capital - Noncontrolling Interest Reflected in Consolidated Statement of Operations (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Class of Stock [Line Items] |  |  |
Noncontrolling interest | $ 14,455 | $ 15,221 | $ 4,165
Consolidated Subsidiaries With Noncontrolling Interest |  |  |
Class of Stock [Line Items] |  |  |
Noncontrolling interest | 0 | 0 | (259)
Class A Units |  |  |
Class of Stock [Line Items] |  |  |
Noncontrolling interest | $ 14,455 | $ 15,221 | $ 4,424

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