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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		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	$ 233,646	$ 228,184	$ 245,657	$ 223,726
Other comprehensive income (loss)	(12,583)	362	(30,917)	(950)
Balance at end of period	227,685	234,155	227,685	234,155
Accumulated Net Investment Gain (Loss) Attributable to Parent
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	(20,061)	1,556	(1,718)	5,009
Unrealized losses arising during the period	(16,120)	(417)	(39,337)	(4,670)
Reclassification of net realized (gains) losses during the period	1	(45)	(1)	(164)
Related deferred taxes	3,385	96	8,261	1,015
Other comprehensive income (loss)	(12,734)	(366)	(31,077)	(3,819)
Balance at end of period	$ (32,795)	$ 1,190	$ (32,795)	$ 1,190

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