Reinsurance - Effect on Net Premiums Written and Earned (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net premiums written:
Direct	$ 1,028,781	$ 927,702	$ 918,406
Ceded	(134,499)	(107,673)	(110,914)
Net premiums written	894,282	820,029	807,492
Net premiums earned:
Direct	1,051,405	950,200	983,457
Ceded	(134,499)	(107,673)	(110,914)
Net premiums earned	$ 916,906	$ 842,527	$ 872,543

Amount of earned premiums ceded to other entities.

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