Investments - Narrative (Details) $ in Thousands	Mar. 31, 2024 USD ($) security	Dec. 31, 2023 USD ($) security
Net Investment Income [Line Items]
Short-term investments	$ 31,175	$ 35,588
Long-term investments	$ 102,941	$ 103,588
Number of securities in an unrealized loss position | security	475	410
Unrealized loss position for 12 months or longer | security	81
Investments Held By Captive Reinsurance Business
Net Investment Income [Line Items]
Investments	$ 37,500
Short-term investments	3,300
Long-term investments	$ 34,300