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Other Debt - Summary of Interest Expense (Parenthetical) (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Feb. 28, 2021
Jan. 31, 2020
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Debt Instrument [Line Items]            
Interest expense — corporate debt     $ 4,488 $ 1,913 $ 16,147 $ 10,149
Repayment of outstanding principal amount         81,063 75,000
Corporate Debt Agreement | Owl Rock Capital Corporation | 2019 Term Loan            
Debt Instrument [Line Items]            
Interest expense — corporate debt         16,100 10,100
Write off of debt issuance cost         2,900 3,500
Prepayment penalties         $ 1,600 $ 300
Repayment of outstanding principal amount $ 78,000 $ 75,000