Stockholders' Equity and Earnings per Common Share, Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Stockholders Equity Note [Abstract]
Beginning Balance	$ 109,756	$ 102,006
Ending Balance	117,145	109,756
Other comprehensive income, pretax [Abstract]
Unrealized holding gains arising during the period, pretax	5,514	2,943
Reclassification adjustment for gains recognized in income, pretax	(264)	(314)
Total change in accumulated other comprehensive income, net, pretax	5,250	2,629
Other Comprehensive Income, Tax Effect [Abstract]
Unrealized holding gains arising during the period, tax effect	1,157	618
Reclassification adjustment for gains recognized in income, tax effect	(55)	(66)
Total change in accumulated other comprehensive income, net, tax effect	1,102	552
Other Comprehensive Income, Net of Tax [Abstract]
Unrealized holding gains arising during the period, net of tax	4,357	2,325
Reclassification adjustment for gains recognized in income, net of tax	(209)	(248)
Other comprehensive income, net of tax	4,148	2,077
Unrealized Gains (Losses) on Available-for-Sale Securities [Member]
Stockholders Equity Note [Abstract]
Beginning Balance	(79)	(2,156)
Net other comprehensive income	4,148	2,077
Ending Balance	4,069	(79)
Accumulated Other Comprehensive Income (Loss) [Member]
Stockholders Equity Note [Abstract]
Beginning Balance	(79)	(2,156)
Net other comprehensive income	4,148	2,077
Ending Balance	4,069	(79)
Other Comprehensive Income, Net of Tax [Abstract]
Other comprehensive income, net of tax	$ 4,148	$ 2,077