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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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Fair value portion of warrants not settleable in cash classified as equity.

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Debt - Additional Information (Detail) - Square 1 Bank [Member] - Loan and Security Agreement [Member] - USD ($)		1 Months Ended
	Aug. 04, 2016	Jul. 31, 2016	Dec. 31, 2014
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
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