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STOCKHOLDERS' EQUITY - Warrants Exercises - Additional Information (Details) - USD ($) | 9 Months Ended | 15 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Mar. 31, 2017
Class Of Warrant Or Right [Line Items] |  |  |
Proceeds from exercise of warrants | $ 9,356,833 | $ 22,222,494 |
Private Placement | Warrants |  |  |
Class Of Warrant Or Right [Line Items] |  |  |
Common stock exercise price per share |  |  | $ 5.772
Shares of common stock to purchase by warrant |  |  | 5,673,758
Proceeds from exercise of warrants |  |  | $ 32,700,000
Warrants outstanding | 0 |  |

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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 Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. + 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)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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