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STOCKHOLDERS' EQUITY (Tables) | 6 Months Ended
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Jun. 30, 2014
Stockholders' Equity Note [Abstract] |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] | The following table summarizes stock option activity for the six months ended June 30, 2014:
|  | Number of shares |  | Weighted- average exercise price |  | Weighted- average Contractual Term |  | Aggregate Intrinsic Value |
|  |  |  |  |  |  | (in years) |  |  |  |
Outstanding at December 31, 2013 |  | 46,591 |  | $ | 46.37 |  | 8.50 |  | $ | — |
Granted |  | — |  |  | — |  |  |  |  |  |
Exercised |  | — |  |  | — |  |  |  |  |  |
Forfeited |  | — |  |  | — |  |  |  |  |  |
Expired |  | (359) |  |  | 4,640.63 |  |  |  |  |  |
Outstanding at June 30, 2014 |  | 46,232 |  | $ | 10.70 |  | 8.07 |  | $ | 229,540 |
Vested and expected to vest at June 30, 2014 |  | 37,232 |  | $ | 12.22 |  | 8.07 |  | $ | 184,630 |
Exercisable at June 30, 2014 |  | 37,232 |  | $ | 12.22 |  | 8.07 |  | $ | 184,630 |
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] | The following table summarizes restricted share activity for the six months ended June 30, 2014:
|  | Number of Shares |  | Weighted Average Grant Date Fair Value |
Outstanding at December 31, 2013 |  | 7,034,957 |  | $ | 4.60 |
Granted |  | 297,690 |  |  | 8.14 |
Vested |  | (502,124) |  |  | 6.88 |
Forfeited |  | — |  |  | — |
Outstanding at June 30, 2014 |  | 6,830,523 |  | $ | 4.65 |
Schedule Of Warrants Activity [Table Text Block] | The following table summarizes warrant activity for the six months ended June 30, 2014:
|  | Warrants |  | Weighted- average exercise price |  | Aggregate Intrinsic Value |
Outstanding at December 31, 2013 |  | 5,718,947 |  | $ | 1.34 |  | $ | 14,809,030 |
Issued |  | — |  |  | — |  |  |  |
Exercised |  | (700,230) |  |  | 2.29 |  |  |  |
Expired |  | (9,795) |  |  | 20.92 |  |  |  |
Outstanding at June 30, 2014 |  | 5,008,922 |  | $ | 1.17 |  | $ | 41,163,640 |
Schedule Of Share Based Compensation Expense [Text Block] | The following table summarizes stock-based compensation expense information about stock options and restricted stock for the three and six months ended June 30, 2014:
|  | Three months ended June 30, 2014 |  | Six months ended June 30, 2014 |
Stock-based compensation expense associated with restricted stock |  | $ | 7,486,336 |  | $ | 11,717,774 |
Stock-based compensation expense associated with option grants |  |  | 252,510 |  |  | 252,510 |
|  | $ | 7,738,846 |  | $ | 11,970,284 |

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + 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)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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