Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 8,835	$ 4,350	$ 4,871
Securities available for sale:
Unrealized holding (losses) gains on available-for-sale securities	(2,426)	2,153	(3,719)
Tax effect	510	(733)	1,265
Reclassification adjustment for net losses (gains) realized in net income	21	(7)	(466)
Tax effect	(4)	3	158
Total securities available-for-sale	(1,899)	1,416	(2,762)
Change in post-retirement obligations	68	14	39
Total other comprehensive (loss) income	(1,831)	1,430	(2,723)
Total comprehensive income	$ 7,004	$ 5,780	$ 2,148

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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