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Investments - Schedule of Amortized Cost and Fair Value by Contractual Maturity (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Amortized Cost    
Due in one year or less $ 58,860 $ 41,033
Due after one year through five years 318,249 269,487
Due after five years through ten years 58,443 52,561
Due after ten years 188,346 198,472
Asset backed securities 20,431 19,511
Amortized cost 644,329 581,064
Fair Value    
Due in one year or less 58,211 41,150
Due after one year through five years 297,378 268,537
Due after five years through ten years 53,134 52,000
Due after ten years 159,156 198,314
Asset backed securities 16,202 17,447
Total $ 584,081 $ 577,448