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Earnings (Loss) Per Share - Computation of Basic and Diluted Earnings (Loss) per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Earnings (Loss) Per Share
Net loss	$ (1,847)	$ (2,349)
Basic weighted average shares outstanding (in shares)	16,650,725	16,630,597
Dilutive common stock equivalents using treasury stock method (in shares)
Diluted weighted average shares outstanding (in shares)	16,650,725	16,630,597
Basic loss per common share (in dollars per share)	$ (0.11)	$ (0.14)
Diluted loss per common share (in dollars per share)	$ (0.11)	$ (0.14)
Weighted average options outstanding (in shares)	542,818	587,184
Anti-dilutive options not included in the computations (in shares)	542,818	587,184

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