Accumulated Other Comprehensive Income (Loss) - Summary of Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Changes in Accumulated Other Comprehensive Income [Roll Forward]
Balance	$ 67,122	$ 60,007
Other comprehensive income (loss) before reclassifications	1,788	1,664
Balance	71,088	64,106
Gains (Losses) on Cash Flow Hedges [Member]
Changes in Accumulated Other Comprehensive Income [Roll Forward]
Balance	(78)	172
Other comprehensive income (loss) before reclassifications	(393)	(228)
Balance	(471)	(56)
Unrealized Gains (Losses) on Available for Sale Securities [Member]
Changes in Accumulated Other Comprehensive Income [Roll Forward]
Balance	1,292	(850)
Other comprehensive income (loss) before reclassifications	2,181	1,892
Balance	3,473	1,042
Supplemental Executive Retirement Plans [Member]
Changes in Accumulated Other Comprehensive Income [Roll Forward]
Balance	157	140
Balance	157	140
Accumulated Other Comprehensive Income (Loss) [Member]
Changes in Accumulated Other Comprehensive Income [Roll Forward]
Balance	1,371	(538)
Balance	$ 3,159	$ 1,126