Reinsurance - Schedule of Premiums Written and Earned Along with Losses and Settlement Expenses Incurred (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
WRITTEN
Direct	$ 1,783,862	$ 1,531,656	$ 1,313,093
Reinsurance assumed	22,798	33,830	34,261
Reinsurance ceded	(378,913)	(323,950)	(289,821)
Net	1,427,747	1,241,536	1,057,533
EARNED
Direct	1,671,044	1,425,165	1,222,346
Reinsurance assumed	28,375	35,680	30,950
Reinsurance ceded	(405,113)	(316,409)	(272,393)
Net	1,294,306	1,144,436	980,903
LOSSES AND SETTLEMENT EXPENSES INCURRED
Direct	840,255	776,448	703,903
Reinsurance assumed	10,228	22,813	18,087
Reinsurance ceded	(246,070)	(284,885)	(265,388)
Net	$ 604,413	$ 514,376	$ 456,602

Amount of earned premiums assumed from other entities.

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Amount, after effects of policies assumed or ceded, of expense related to the provision for policy benefits and costs incurred.

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