Net Loss Per Common Share (Computation of Basic and Diluted Net Income Per Common Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Numerator:
Net loss	$ (1,615)	$ (4,529)
Denominator:
Weighted average number of shares of common stock outstanding	8,946,174	8,888,815
Diluted weighted average number of shares of common stock outstanding	8,946,174	8,888,815
Net loss per common share:
Net loss per common share - Basic	$ (0.18)	$ (0.51)
Net loss per common share - Diluted	$ (0.18)	$ (0.51)