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8. Loss per Share (Tables)
3 Months Ended
Mar. 31, 2020
Earnings Per Share [Abstract]  
Computation of basic and diluted loss per share
    Three Months Ended  
    March 31, 2020     March 31, 2019  
Numerator:            
Net loss (numerator for basic and diluted loss per share)   $ (1,192 )   $ (1,318 )
Denominator:                
Denominator for basic loss per share weighted average shares     12,555,108       12,761,713  
Effect of dilutive securities:                
Options and restricted stock units            
Denominator:                
Denominator for diluted loss per share weighted average shares     12,555,108       12,761,713  
Basic loss per share   $ (0.09 )   $ (0.10 )
Diluted loss per share   $ (0.09 )   $ (0.10 )