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6. Stockholders' Equity (Tables)
6 Months Ended
Jun. 30, 2014
Stockholders Equity Tables  
Changes in consolidated stockholders' equity
    Common Stock Shares     Common Stock Amount     Additional Paid-In Capital     Accumulated Deficit     Total  
                               
Balance at December 31, 2013     13,588,804     $ 8,153     $ 24,672     $ (1,405 )   $ 31,420  
Common stock option exercise and issued     64,283       39       87             126  
Share-based compensation expense                 25             25  
Net income                       1,147       1,147  
Balance at June 30, 2014     13,653,087     $ 8,192     $ 24,784     $ (258 )   $ 32,718