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Warrants (Details 1) | 3 Months Ended
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Mar. 31, 2018 $ / shares shares
Warrants (Equity) [Member] |
Summary of outstanding debt and equity warrants [Line Items] |
Number of Shares, Warrants, Beginning Balance | shares | 33,004,011
Number of Shares, Warrants issued with revolver loan | shares | 1,851,852
Number of Shares, Warrants expired | shares | 530,513
Number of Shares, Warrants, Ending Balance | shares | 34,325,350
Weighted Average Exercise Price, Beginning Balance | $ / shares | $ 0.47
Weighted Average Exercise Price, Warrants issued with revolver loan | $ / shares | 0.27
Weighted Average Exercise Price, Warrants expired | $ / shares | 10.73
Weighted Average Exercise Price, Ending Balance | $ / shares | $ 0.30
Weighted Average Remaining Contractual Life, Beginning Period | 3 years 6 months 18 days
Weighted Average Remaining Contractual Life, Warrants issued with revolver loan | 4 years 9 months 18 days
Weighted Average Remaining Contractual Life, Ending Period | 3 years 5 months 5 days
Warrants (Liability) [Member] |
Summary of outstanding debt and equity warrants [Line Items] |
Number of Shares, Warrants, Beginning Balance | shares | 6,487,500
Number of Shares, Warrants issued with revolver loan | shares |
Number of Shares, Warrants expired | shares |
Number of Shares, Warrants, Ending Balance | shares | 6,487,500
Weighted Average Exercise Price, Beginning Balance | $ / shares | $ 0.35
Weighted Average Exercise Price, Warrants issued with revolver loan | $ / shares |
Weighted Average Exercise Price, Warrants expired | $ / shares |
Weighted Average Exercise Price, Ending Balance | $ / shares | $ 0.35
Weighted Average Remaining Contractual Life, Beginning Period | 1 year 7 months 21 days
Weighted Average Remaining Contractual Life, Ending Period | 1 year 4 months 20 days

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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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- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (e)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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