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Investments- Fair Value of the Company's Investments by Type (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Marketable Securities [Line Items] |  |
Amortized Cost | $ 257,288 | $ 278,131
Accrued Interest | 955 | 135
Gross Unrealized Gains | 6 | 150
Gross Unrealized Losses | (315) | (72)
Estimated Fair Value | $ 257,934 | $ 278,344
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] | Investments | Investments
Obligations of U.S. Government and its agencies |  |
Marketable Securities [Line Items] |  |
Amortized Cost | $ 256,308 | $ 277,151
Accrued Interest | 941 | 121
Gross Unrealized Gains | 6 | 150
Gross Unrealized Losses | (314) | (64)
Estimated Fair Value | 256,941 | 277,358
Certificates of deposit |  |
Marketable Securities [Line Items] |  |
Amortized Cost | 980 | 980
Accrued Interest | 14 | 14
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (1) | (8)
Estimated Fair Value | $ 993 | $ 986

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