Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	$ 164,305	$ 160,709	$ 143,717	$ 138,488	$ 160,709	$ 138,488
Other comprehensive income (loss) before reclassifications	121		216		(1,014)	154
Less amounts reclassified from accumulated other comprehensive income (loss)	47		62		(102)	50
Total other comprehensive income (loss), net	74	(986)	154	(50)	(912)	104
Ending Balance	166,607	164,305	149,383	143,717	166,607	149,383
Reclassification to unappropriated retained earnings	79,253				79,253		$ 70,442
Net unrealized (losses) gains on securities
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	319	316	(560)	(721)	316	(721)
Other comprehensive income (loss) before reclassifications	362		631		231	871
Less amounts reclassified from accumulated other comprehensive income (loss)	62		77		(72)	156
Total other comprehensive income (loss), net	300		554		303	715
Ending Balance	619	319	(6)	(560)	619	(6)
Adjustments related to defined benefit plan
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(280)	(295)	(340)	(431)	(295)	(431)
Less amounts reclassified from accumulated other comprehensive income (loss)	(15)		(15)		(30)	(106)
Total other comprehensive income (loss), net	15		15		30	106
Ending Balance	(265)	(280)	(325)	(340)	(265)	(325)
Net unrealized (losses) gains from cash flow hedges
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(836)	168	728	1,030	168	1,030
Other comprehensive income (loss) before reclassifications	(241)		(415)		(1,245)	(717)
Total other comprehensive income (loss), net	(241)		(415)		(1,245)	(717)
Ending Balance	(1,077)	(836)	313	728	(1,077)	313
Accumulated other comprehensive income (loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(832)	154	(207)	(157)	154	(157)
Total other comprehensive income (loss), net	74	(986)	154	(50)
Ending Balance	(758)	(832)	(53)	(207)	(758)	(53)
Accounting Standards Update 2016-01 And 2018-02
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Reclassification to unappropriated retained earnings	35		35		35	35
Accounting Standards Update 2016-01 And 2018-02 \| Accumulated other comprehensive income (loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning Balance	(797)	189	(172)	(122)	189	(122)
Ending Balance	$ (723)	$ (797)	$ (18)	$ (172)	$ (723)	$ (18)

Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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