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13. COMMON STOCK AND WARRANTS (Details) - Warrant | 12 Months Ended
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Dec. 31, 2015 $ / shares $ / Warrant shares | Dec. 31, 2014 $ / shares $ / Warrant shares | Dec. 31, 2013 $ / shares $ / Warrant shares
Number of Shares |  |  |
Begining Balance | shares | 856,000 | 8,275,000 | 2,039,000
Warrants issued | shares |  |  | 3,548,000
Warrants exercised | shares | (42,000) | (6,615,000) | (285,000)
Warrants expired | shares | (432,000) | (804,000) | (27,000)
Ending Balance | shares | 382,000 | 856,000 | 8,275,000
Weighted Average Exercise Price |  |  |
Begining Balance | $ 36.55 | $ 10.04 | $ 17.10
Warrants issued |  |  | 6.98
Warrants exercised | 8.85 | 7.17 | 7.27
Warrants expired | 8.85 | 5.47 | 745.50
Ending Balance | 70.87 | 36.55 | 10.04
Minimum [Member] |  |  |
Price per Share |  |  |
Begining Balance | 6.09 | $ 5.47 | $ 1.80
Warrants issued | $ / Warrant |  |  | 6.32
Warrants exercised | $ / Warrant |  | 6.09 | 1.80
Ending Balance | 6.09 | $ 6.09 | $ 5.47
Maximum [Member] |  |  |
Price per Share |  |  |
Begining Balance | $ 735.00 | $ 735.00 | $ 745.50
Warrants issued | $ / Warrant |  |  | 7.59
Warrants exercised | $ / Warrant | 8.85 | 8.85 | 8.85
Warrants expired | $ / Warrant | 8.85 | 5.47 | 745.50
Ending Balance | $ 735.00 | $ 735.00 | $ 735.00

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