Exercise price per share or per unit of warrants or rights outstanding.

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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.

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The number of new shares issued in the conversion of stock in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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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.

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Amount, after accumulated amortization, of debt discount.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The cash outflow for loan origination associated cost which is usually collected through escrow.

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Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Fair value portion of warrants not settleable in cash classified as equity.

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Debt - Additional Information (Detail) - USD ($)		1 Months Ended		9 Months Ended
Debt - Additional Information (Detail) - USD ($)	Aug. 04, 2016	Jul. 31, 2016	Dec. 31, 2014	Sep. 30, 2016
Debt Instrument [Line Items]
Repayment of principal and accrued interest				$ 4,500,000
Square 1 Bank [Member] \| Loan and Security Agreement [Member]
Debt Instrument [Line Items]
Repayment of principal and accrued interest	$ 4,500,000
Line of credit facility, loan origination cost			$ 82,685
Debt instrument, unamortized discount	38,000
Warrants exercisable, stock issued			22,881
Warrant exercise price per share			$ 5.90
Square 1 Bank [Member] \| Loan and Security Agreement [Member] \| Warrants to purchase common stock [Member]
Debt Instrument [Line Items]
Debt instrument, unamortized discount	$ 59,000
Common stock shares issued upon conversion of warrants		9,887
Warrant value recorded in equity			$ 108,122