Stockholders' Equity and Earnings per Share, Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Stockholders Equity Note [Abstract]
Beginning Balance	$ 117,923	$ 110,044	$ 117,145	$ 109,756
Ending Balance	119,928	115,869	119,928	115,869
Other comprehensive income, pretax [Abstract]
Unrealized holding gains (losses) arising during the period, pretax	881	5,090	(1,263)	4,527
Reclassification adjustment for gains recognized in income, pretax	0	(184)	0	(184)
Total change in accumulated other comprehensive income, net, pretax	881	4,906	(1,263)	4,343
Other Comprehensive Income, Tax Effect [Abstract]
Unrealized holding gains (losses) arising during the period, tax effect	185	1,069	(265)	951
Reclassification adjustment for gains recognized in income, tax effect	0	(39)	0	(39)
Total change in accumulated other comprehensive income, net, tax effect	185	1,030	(265)	912
Other Comprehensive Income, Net of Tax [Abstract]
Net unrealized gains (losses) on available-for-sale securities	696	4,021	(998)	3,576
Reclassification adjustment for gains recognized in income, net of tax	0	(145)	0	(145)
Other comprehensive income (loss), net of tax	696	3,876	(998)	3,431
Unrealized Gains (Losses) on Available-for-Sale Securities [Member]
Stockholders Equity Note [Abstract]
Beginning Balance	2,375	(524)	4,069	(79)
Net other comprehensive income (loss)	696	3,876	(998)	3,431
Ending Balance	3,071	3,352	3,071	3,352
Accumulated Other Comprehensive Income [Member]
Stockholders Equity Note [Abstract]
Beginning Balance	2,375	(524)	4,069	(79)
Net other comprehensive income (loss)	696	3,876	(998)	3,431
Ending Balance	3,071	3,352	3,071	3,352
Other Comprehensive Income, Net of Tax [Abstract]
Other comprehensive income (loss), net of tax	$ 696	$ 3,876	$ (998)	$ 3,431