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6. STOCK BASED COMPENSATION (Tables)
6 Months Ended
Jun. 30, 2016
Equity [Abstract]  
Value of outstanding stock options
    Three months ended     Six months ended  
    June 30, 2016     June 30, 2016  
    Weighted Average Exercise     Weighted Average Exercise  
    Shares     Price     Shares     Price  
                         
Outstanding at beginning of period     30,157     $ 3.22       67,000     $ 3.22  
Granted     -       -       -       -  
Exercised     (23,157 )     3.22       (60,000 )     3.23  
Forfeited     -       -       -       -  
                                 
Outstanding at end of period     7,000     $ 3.09       7,000     $ 3.09