Senior Convertible Notes - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions |
9 Months Ended | ||
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Aug. 01, 2014 |
Sep. 30, 2016 |
Dec. 31, 2015 |
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| Debt Instrument [Line Items] | |||
| Initial public offering, closing date | Aug. 01, 2014 | ||
| 8.00% Convertible Notes due May 31, 2015 [Member] | |||
| Debt Instrument [Line Items] | |||
| Convertible Notes, principal amount | $ 15.0 | ||
| Convertible Notes, interest rate | 8.00% | ||
| Convertible Notes, due date | May 31, 2015 | ||
| Initial Public Offering [Member] | |||
| Debt Instrument [Line Items] | |||
| Conversion of Convertible Notes together with accrued and unpaid interest into common stock, shares | 5,109,988 | ||
| Note Warrants [Member] | |||
| Debt Instrument [Line Items] | |||
| Common stock issuable upon exercise of warrant | 3,321,416 | 3,315,878 | 3,315,878 |
| Warrant exercise price per share | $ 3.00 | ||
| Warrants expiration period | 5 years | ||
| Warrants, Description | Each purchaser of the Convertible Notes received a warrant (the "Note Warrants"). |
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- Definition Class Of Warrant Or Right Expiration Period No definition available.
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- Definition Initial public offering closing date. No definition available.
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- Definition Warrant description. No definition available.
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- Definition Exercise price per share or per unit of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Expiration, mandatory redemption, or due date, in CCYY-MM-DD format, of the financial instrument issued in exchange for the original debt being converted in a noncash or part noncash transaction. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Face (par) amount of debt instrument at time of issuance. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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