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COMMON STOCK AND WARRANTS. (Details) - Warrants [Member] - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Number of Shares |  |  |
Begining Balance | 244,000 | 382,000 | 856,000
Warrants exercised | (191,000) | (138,000) | (42,000)
Warrants expired | (49,000) |  | (432,000)
Ending Balance | 4,000 | 244,000 | 382,000
Price per Share |  |  |
Begining Balance |  |  |
Warrants exercised | 6.09 | 8.43 | 8.85
Warrants expired |  |  | 8.85
Ending Balance | 735.00 |  |
Weighted Average Exercise Price |  |  |
Begining Balance | 106.72 | 70.87 | 36.55
Warrants exercised | 6.09 | 8.43 | 8.85
Warrants expired | 444.00 |  | 8.85
Ending Balance | 735.00 | 106.72 | 70.87
Minimum [Member] |  |  |
Price per Share |  |  |
Begining Balance | 6.09 | 6.09 | 6.09
Warrants exercised |  |  |
Ending Balance | 6.09 | 6.09 | 6.09
Maximum [Member] |  |  |
Price per Share |  |  |
Begining Balance | 735.00 | 735.00 | 735.00
Warrants exercised |  |  |
Ending Balance | $ 735.00 | $ 735.00 | $ 735.00

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- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(4)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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