Investments - Equity Securities (Details) - USD ($) $ in Thousands |
Mar. 31, 2022 |
Dec. 31, 2021 |
|---|---|---|
| Debt and Equity Securities, FV-NI [Line Items] | ||
| Fair Value | $ 48,932 | $ 44,062 |
| Privately held equity securities | ||
| Debt and Equity Securities, FV-NI [Line Items] | ||
| Fair Value | 48,224 | 42,888 |
| Publicly traded equity securities | ||
| Debt and Equity Securities, FV-NI [Line Items] | ||
| Fair Value | $ 708 | $ 1,174 |