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Loss Per Share - Computation of Basic and Diluted Earnings (Loss) per Common Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Numerator:        
Net loss $ (257) $ (1,586) $ (2,224) $ (3,241)
Denominator:        
Basic weighted average shares outstanding (in shares) 23,948,631 18,775,817 23,923,110 18,775,795
Dilutive common stock equivalents using treasury stock method (in shares) 0 0 0 0
Diluted weighted average shares outstanding (in shares) 23,948,631 18,775,817 23,923,110 18,775,795
Basic loss per common share (in dollars per share) $ (0.01) $ (0.08) $ (0.09) $ (0.17)
Diluted loss per common share (in dollars per share) $ (0.01) $ (0.08) $ (0.09) $ (0.17)
Weighted average options, warrants and convertible portion of senior convertible notes outstanding (in shares) 6,937,350 3,597,418 6,999,665 3,616,661
Anti-dilutive options, warrants and convertible portion of senior convertible notes not included in the computation (in shares) 6,937,350 3,597,148 6,999,665 3,616,661