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1. Organization and Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2013
Organization And Significant Accounting Policies Tables  
Potentially dilutive securities
    2013     2012
Basic and diluted weighted average common stock shares outstanding     5,007,999       4,977,418
Potentially dilutive securities excluded from loss per share computations:              
Common stock options     1,417,309       1,452,082
Common stock purchase warrants     517,858       551,339
Schedule of weighted-average assumptions
Assumptions   2013     2012  
Risk-free rate     2.25 %     0.77 %
Annual rate of dividends     ––       ––  
Historical volatility     105.20 %     103.02 %
Expected life   7.0 years     6.7 years