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Net Loss per Common Share - Additional Information (Detail) - shares | Jun. 30, 2016 | May 31, 2016 | Nov. 30, 2015 | Sep. 30, 2015
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Net Income Loss Per Common Share [Line Items] |  |  |  |
Return of loaned common stock (in shares) |  |  |  | 9,000,000
Shares loaned under the share lending arrangement | 9,000,000 |  |  |
Warrants to purchase of common stock |  |  | 159,304 |
A Warrants |  |  |  |
Net Income Loss Per Common Share [Line Items] |  |  |  |
Warrants to purchase of common stock |  | 36,407,765 |  |
Warrants outstanding | 36,407,765 |  |  |
B Warrants |  |  |  |
Net Income Loss Per Common Share [Line Items] |  |  |  |
Warrants to purchase of common stock |  | 12,135,921 |  |
Warrants outstanding | 12,135,921 |  |  |

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- Definition Common stock loaned under share lending agreement, shares. + References No definition available. + Details
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- Definition Net Income Loss Per Common Share [Line Items] + References No definition available. + Details
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- Definition Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares. + References No definition available. + Details
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- Definition Number 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)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition The number of shares issued in connection with an own-share lending arrangement entered into by the entity, in contemplation of a convertible debt offering or other financing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 2A -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=7656903&loc=SL6757479-112611 + Details
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- Details
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