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Basis of Presentation and Significant Accounting Policies - Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands | Jul. 01, 2027 | Mar. 31, 2024 | Dec. 31, 2023 | Dec. 15, 2023 | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | --- | --- | --- | --- | ---
Cash, Cash Equivalents and Restricted Cash |  |  |  |  |  |
Cash and cash equivalents |  | $ 136,225 | $ 153,290 |  |  |
Restricted cash |  | 6,176 | 6,260 |  |  |
Total cash, cash equivalents and restricted cash |  | 142,401 | 159,550 |  | $ 44,300 | $ 57,826
Cash |  | 1,500 | 124,900 |  |  |
Cash equivalents |  | 134,700 | 28,400 |  |  |
Short-term restricted cash |  | 160 | 160 |  |  |
Long-term restricted cash |  | $ 6,016 | $ 6,100 |  |  |
Cash reserve accounts |  |  |  |  |  |
Cash, Cash Equivalents and Restricted Cash |  |  |  |  |  |
Restricted cash |  |  |  | $ 6,300 |  |
Cash reserve account, Interest and administrative fees |  |  |  |  |  |
Cash, Cash Equivalents and Restricted Cash |  |  |  |  |  |
Restricted cash |  |  |  | 5,800 |  |
Cash reserve account, Interest and administrative fees | Forecast |  |  |  |  |  |
Cash, Cash Equivalents and Restricted Cash |  |  |  |  |  |
Additional amount of cash required to fund reserve account | $ 800 |  |  |  |  |
Cash reserve account, Operating expenses |  |  |  |  |  |
Cash, Cash Equivalents and Restricted Cash |  |  |  |  |  |
Restricted cash |  |  |  | $ 500 |  |

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