Summary of Significant Accounting Policies (Details 1) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Summary of Significant Accounting Policies
Basic EPS, income	$ 2,272	$ 2,141	$ 9,162	$ 5,825
Effect of dilutive securities convertible preferred stock, income	65	65	196	197
Net income	$ 2,337	$ 2,206	$ 9,358	$ 6,022
Basic EPS, shares	3,210,577	3,197,718	3,207,916	3,198,691
Effect of dilutive securities convertible preferred stock, shares	205,327,000	206,660,000	228,118,000	222,599,000
Diluted EPS, shares	3,415,904	3,404,378	3,436,034	3,421,290
Basic EPS, per shares	$ 0.71	$ 0.67	$ 2.86	$ 1.82
Effect of dilutive securities convertible preferred stock, per shares	(0.05)	(0.02)	(0.14)	(0.06)
Diluted EPS, per shares	$ 0.66	$ 0.65	$ 2.72	$ 1.76