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Business Description, Basis of Presentation and Significant Accounting Policies - Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Business Description, Basis of Presentation and Significant Accounting Policies    
Net income (loss) $ 505 $ (8,408)
Basic weighted average shares (in shares) 17,271,629 16,638,580
Dilutive common stock equivalents using treasury stock method (in shares) 53,722
Diluted weighted average shares (in shares) 17,325,351 16,638,580
Basic income (loss) per common share: (in dollars per share) $ 0.03 $ (0.51)
Diluted income (loss) per common share: (in dollars per share) $ 0.03 $ (0.51)
Weighted average options, warrants and convertible portion of senior convertible notes outstanding (in shares) 2,611,574 566,200
Anti-dilutive options, warrants and convertible portion of senior convertible notes not included in the computation (in shares) 3,323,272 566,200