Stockholders' Equity - Additional Information (Detail) - $ / shares	1 Months Ended	3 Months Ended
	Feb. 29, 2012	Mar. 31, 2016	Dec. 31, 2015
Stockholders' Equity Note [Abstract]
Warrants to purchase common stock, exercise price	$ 20.00
Warrant contractual term	10 years
Purchase of warrant common stock	150,000
Warrants outstanding to purchase common stock		150,000	150,000
Warrant to purchase common stock were exercised		0