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Other Comprehensive Income (Loss) - Summary of Unrealized Gains and Losses on Available-for-Sale Securities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period	$ 232,003	$ 227,685	$ 228,923	$ 245,657
Other comprehensive loss	(9,340)	(14,506)	(8,262)	(45,423)
Balance at end of period	226,665	219,917	226,665	219,917
Accumulated Net Investment Gain (Loss) Attributable to Parent
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period	(43,781)	(32,795)	(44,718)	(1,718)
Unrealized losses arising during the period	(12,748)	(18,812)	(11,562)	(58,149)
Reclassification of net realized gains during the period	0	(6)	0	(7)
Related deferred taxes	2,677	3,952	2,428	12,213
Other comprehensive loss	(10,071)	(14,866)	(9,134)	(45,943)
Balance at end of period	$ (53,852)	$ (47,661)	$ (53,852)	$ (47,661)

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