Borrowings - Interest Expense on Broker-Dealer Facilities (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
|
Line of Credit Facility [Line Items] | |||
Interest expense | $ 87,735 | $ 121,859 | $ 71,800 |
Broker-dealer credit facilities | |||
Line of Credit Facility [Line Items] | |||
Interest expense | 1,995 | 2,045 | 2,100 |
Uncommitted facility | |||
Line of Credit Facility [Line Items] | |||
Interest expense | 1,337 | 1,591 | 1,794 |
Committed facility | |||
Line of Credit Facility [Line Items] | |||
Interest expense | 447 | 454 | 306 |
Demand Loan | |||
Line of Credit Facility [Line Items] | |||
Interest expense | $ 211 | $ 0 | $ 0 |