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Investments - Schedule of Debt Securities, Held-to-Maturity (Details) - Fixed Income Securities
$ in Thousands
Dec. 31, 2023
USD ($)
Carrying Amount  
Debt Securities, Available-for-Sale [Line Items]  
Short-term $ 10,946
Long-term 5,526
Total 16,472
Level 2 | Estimated Fair Value  
Debt Securities, Available-for-Sale [Line Items]  
Short-term 10,864
Long-term 5,398
Total $ 16,262