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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
	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	$ 245,657		$ 223,726
Other comprehensive income (loss)	(18,334)	$ 535	(1,312)
Balance at end of period	233,646	245,657	228,184
Accumulated Net Investment Gain (Loss) Attributable to Parent
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	(1,718)		5,009
Unrealized losses arising during the period	(23,217)		(5,945)
Reclassification of net realized gains during the period	(2)		(119)
Related deferred taxes	4,876		1,274
Other comprehensive income (loss)	(18,343)		(4,790)
Balance at end of period	$ (20,061)	$ (1,718)	$ 219

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