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11. STOCK-BASED COMPENSATION (Details) (USD $)
 6 Months Ended
Jun. 30, 2014
Share-based Compensation [Abstract]  
Number of Option and Warrants Outstanding, Beginning balance 2,470,971
Number of Option and Warrants Outstanding, Granted 37,500
Number of Option and Warrants Vested during the period 37,500
Number of Option and Warrants exercised in period (223,000)
Number of Option and Warrants Expired (50,000)
Number of Option and Warrants Outstanding, Ending Balance 2,235,471
Weighted- Average Exercise price of Option and Warrants, Beginning balance $ 3.36
Weighted- Average Exercise price of Option and Warrants, Granted and vested during the period $ 2.18
Weighted- Average Exercise price of Option and Warrants, Exercised during the period $ 0.95
Weighted- Average Exercise price of Option and Warrants, Expired $ 9.10
Weighted- Average Exercise price of Option and Warrants, Ending Balance $ 3.44
Range of Exercise Price per Common Share, Beginning Balance $0.95 - $12.60
Range of Exercise Price per Common Share, Granted and Vested $1.83-2.55
Range of Exercise Price per Common Share, Exercised $ 0.95
Range of Exercise Price per Common Share, Expired $3.22-12.00
Range of Exercise Price per Common Share, Ending Balance $0.95 - $12.60