Stockholders' Equity and Earnings per Share, OCI by Component, Anti-Dilutive Securities (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Computation of earnings per share [Abstract]
Net Income Available to Common Stockholders, Basic	$ 1,100	$ 2,232	$ 4,844	$ 5,885
Net Income Available to Common Stockholders, Diluted	$ 1,100	$ 2,232	$ 4,844	$ 5,885
Weighted Average Common Shares, Basic (in shares)	5,221,476	5,198,634	5,213,982	5,195,912
Potentially dilutive common shares - employee stock purchase program (in shares)	1,000	0	0	0
Weighted Average Common Shares, Diluted (in shares)	5,221,601	5,198,656	5,214,262	5,195,962
Earnings Per Share, Basic (in dollars per share)	$ 0.21	$ 0.43	$ 0.93	$ 1.13
Earnings Per Share, Diluted (in dollars per share)	$ 0.21	$ 0.43	$ 0.93	$ 1.13
Stock Options [Member]
Earnings Per Share [Abstract]
Antidilutive securities excluded from computation of earnings per share (in shares)			0	0