Other Liabilities - Additional Information (Detail) - Silicon Valley Bank [Member] - USD ($)		6 Months Ended
	Oct. 30, 2013	Jun. 30, 2016	Oct. 23, 2013
Other Liabilities [Line Items]
Loan repaid date		Mar. 28, 2014
Term loan facility with Silicon Valley Bank			$ 4,000,000
Term loan, amount borrowed	$ 2,500,000
Warrants expire		2023
Warrants to Purchase Common Stock [Member]
Other Liabilities [Line Items]
Warrants to purchase shares of stock, shares			11,363
Warrants to purchase per share			$ 10.56