Fair Value of Financial Instruments - Reconciliation of Other Investments Measured at Fair Value (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2022 |
Mar. 31, 2021 |
|
| Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] | ||
| Balance - beginning of period | $ 27,094 | $ 26,094 |
| Purchases | 2,566 | 4,250 |
| Transfers out of Level 3 | 0 | (1,000) |
| Total Level 3 investments - end of period | $ 29,660 | $ 29,344 |