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Summary of Significant Accounting Policies - Marketable Securities (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Debt Securities, Available-for-Sale [Line Items] |  |
Marketable investments | $ 83,706 | $ 112,523
Corporate Bonds |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Marketable investments | 38,244 | 47,335
U.S. Treasury |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Marketable investments | 19,556 | 24,153
Mortgage-Backed |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Marketable investments | 5,374 | 7,361
U.S. agency and government sponsored securities |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Marketable investments | 9,560 | 14,588
U.S. states and municipalities |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Marketable investments | 10,906 | 11,682
Asset-Backed |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Marketable investments | 66 | $ 6,406
Level 1 |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Marketable investments | 54,021 |
Level 1 | Corporate Bonds |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Marketable investments | 34,465 |
Level 1 | U.S. Treasury |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Marketable investments | 19,556 |
Level 1 | Mortgage-Backed |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Marketable investments | 0 |
Level 1 | U.S. agency and government sponsored securities |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Marketable investments | 0 |
Level 1 | U.S. states and municipalities |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Marketable investments | 0 |
Level 1 | Asset-Backed |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Marketable investments | 0 |
Level 2 |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Marketable investments | 29,685 |
Level 2 | Corporate Bonds |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Marketable investments | 3,779 |
Level 2 | U.S. Treasury |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Marketable investments | 0 |
Level 2 | Mortgage-Backed |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Marketable investments | 5,374 |
Level 2 | U.S. agency and government sponsored securities |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Marketable investments | 9,560 |
Level 2 | U.S. states and municipalities |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Marketable investments | 10,906 |
Level 2 | Asset-Backed |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Marketable investments | $ 66 |

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