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11. Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2015
Stock-based Compensation Tables  
Schedule of options granted under employee stock plans
    Shares Available for Grant     Number of Shares Outstanding     Weighted-Average Exercise Price  
                   
Balance as of December 31, 2014     5       1,015     $ 5.52  
Authorized     200       —       —  
Granted     (235 )     235       3.83  
Exercised     -       (145 )     2.72  
Forfeited/expired     125       (125 )     3.64  
Balance as of December 31, 2015     95       980     $ 5.76  
Schedule of weighted average fair value calculations for options
    Number of Shares     Weighted Average Exercise Price     Remaining Contractual Term (In Years)     Average Intrinsic Value1  
2015                        
Vested and Exercisable     687     $ 6.49       2.32     $ -  
Unvested     293       4.06       5.59       -  
Total  Outstanding     980     $ 5.76       3.30     $ -  
                                 
2014                                
Vested and Exercisable     648     $ 5.84       2.47     $ 670  
Unvested     367       4.95       3.87       356  
Total Outstanding     1,015     $ 5.52       2.98     $ 1,026  
Schedule of assumptions for weighted-average fair value calculations for options granted
Description   For the years ended December 31  
    2015     2014  
Dividend-yield     0 %     0 %
Risk-free interest rate     1.61 %     0.88 %
Expected volatility     76.55 %     77.86 %
Expected life (years)     5.40       3  
Market value per share on grant date   $ 3.69     $ 4.38  
Fair value per share on grant date   $ 2.27     $ 2.22