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10. Stockholders Equity (Details Narrative) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Stock Based Compensation    
Stock-based compensation expense $ 185,000 $ 332,000
Options outstanding under 2004 Plan 850,000  
Options outstanding under 2010 Plan 964,000  
Intrinsic value of options exercised   $ 26,000
Stock option exercises, cash received   36,000
Weighted average grant-date fair value $ 0.15 $ 0.32
Unamortized compensation expense $ 46,000  
Weighted average remaining service period 7 years 8 months 26 days  
Preferred Stock issued and outstanding 156,000 161,000
Common shares issued for payment of dividends 73,000 37,000
Cumulative convertible preferred stock converted into common stock 15,000  
Conversion rate 32.76%