Other Comprehensive Income (Loss) - Summary of Other Comprehensive (Loss) Income and Tax Impact of Each Component of Other Comprehensive (Loss) Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Other comprehensive income (loss)
Change in unrealized losses on investments, net, Pre-tax	$ (2,986)	$ (16,161)	$ 9,158	$ (47,932)
Reclassification adjustment of realized losses included in net income (loss), Pre-tax	9	102	11	118
Effect on other comprehensive income (loss) , Pre-tax	(2,977)	(16,059)	9,169	(47,814)
Change in unrealized losses on investments, net, Tax	700	3,783	(2,155)	11,220
Reclassification adjustment of realized losses included in net income (loss), Tax	(2)	(24)	(3)	(27)
Effect on other comprehensive income (loss), Tax	698	3,759	(2,158)	11,193
Change in unrealized losses on investments, net, After-tax	(2,286)	(12,378)	7,003	(36,712)
Reclassification adjustment of realized losses included in net income (loss), After-tax	7	78	8	91
Effect on other comprehensive income (loss), After-tax	$ (2,279)	$ (12,300)	$ 7,011	$ (36,621)