Other Comprehensive Income (Loss) - Summary of Unrealized Gains and Losses on Available-for-Sale Securities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period	$ 228,461	$ 233,646	$ 228,923	$ 245,657
Other comprehensive income (loss)	(371)	(12,583)	1,078	(30,917)
Balance at end of period	232,003	227,685	232,003	227,685
Accumulated Net Investment Gain (Loss) Attributable to Parent
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period	(40,537)	(20,061)	(44,718)	(1,718)
Unrealized gains (losses) arising during the period	(4,106)	(16,120)	1,186	(39,337)
Reclassification of net realized (gains) losses during the period	0	1	0	(1)
Related deferred taxes	862	3,385	(249)	8,261
Other comprehensive income (loss)	(3,244)	(12,734)	937	(31,077)
Balance at end of period	$ (43,781)	$ (32,795)	$ (43,781)	$ (32,795)