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Shareholders' Equity (Details Narrative) - USD ($)
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Weighted average remaining life of options exercisable 2 years 4 months 20 days 3 years 1 month 24 days
Weighted average grant-date fair value of options granted $ 0 $ 1.04
Restricted stock (in shares) 70,755 343,667
Restricted stock on the grant date (in dollars per share) $ 1.06 $ 1.86
Unrecognized compensation costs related to stock options $ 58,000 $ 107,000
Unrecognized compensation costs related to restricted stock units 230,000 549,000
Stock-based compensation expense $ 422,000 $ 410,000
Repurchase of common stock, shares 0 164,000
Repurchase of common stock, amount $ 0 $ 298,000
Employee Stock    
Employees purchased shares 32,741 107,341
Shares are reserved for future employee purchases 245,909 278,380
Stock-based compensation expense $ 55,000 $ 58,000
2013 and 2018 Plan | Restricted Stock and Restricted Stock Units    
Restricted stock (in shares) 0 297,515
Restricted stock on the grant date (in dollars per share) $ 0 $ 1.84
Vesting period 0 years 2 years