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Other Comprehensive Income (Loss) - Summary of Available for Sale Securities Activity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance			$ 212,508	$ 191,542
Other comprehensive gain (loss)	$ (1,186)	$ 597	(3,991)	7,042
Ending balance	219,440	208,489	219,440	208,489
Accumulated Net Investment Gain (Loss) Attributable to Parent
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	7,100	2,750	3,657	(5,051)
Unrealized gains (losses) arising during the period	(2,000)	1,199	3,537	11,074
Reclassification of net realized gains during the period	0	(15)	(1,179)	(15)
Related deferred taxes	420	(248)	(495)	(2,322)
Other comprehensive gain (loss)	(1,580)	936	1,863	8,737
Ending balance	$ 5,520	$ 3,686	$ 5,520	$ 3,686

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