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11. STOCK-BASED COMPENSATION (Details) (USD $) | 6 Months Ended
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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

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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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