Accumulated Other Comprehensive Income (Loss) - Summary of Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Changes in Accumulated Other Comprehensive Income [Roll Forward]
Balance	$ 67,122	$ 60,007	$ 56,142
Reclassification of the income tax effect of the Tax Cuts and Jobs Act from accumulated other comprehensive income (loss)			10
Other comprehensive income (loss) before reclassifications	954	1,909	(673)
Balance	72,461	67,122	60,007
Gains (Losses) on Cash Flow Hedges [Member]
Changes in Accumulated Other Comprehensive Income [Roll Forward]
Balance	(78)	172	37
Other comprehensive income (loss) before reclassifications	(271)	(250)	135
Balance	(349)	(78)	172
Unrealized Gains (Losses) on Available for Sale Securities [Member]
Changes in Accumulated Other Comprehensive Income [Roll Forward]
Balance	1,292	(850)	(37)
Reclassification of the income tax effect of the Tax Cuts and Jobs Act from accumulated other comprehensive income (loss)			10
Other comprehensive income (loss) before reclassifications	1,349	2,142	(823)
Balance	2,641	1,292	(850)
Supplemental Executive Retirement Plans [Member]
Changes in Accumulated Other Comprehensive Income [Roll Forward]
Balance	157	140	125
Other comprehensive income (loss) before reclassifications	(124)	17	15
Balance	33	157	140
Accumulated Other Comprehensive Income (Loss) [Member]
Changes in Accumulated Other Comprehensive Income [Roll Forward]
Balance	1,371	(538)	125
Balance	$ 2,325	$ 1,371	$ (538)