Basis of Presentation - Additional Information (Detail)		9 Months Ended
	Aug. 15, 2016 shares	Sep. 30, 2016 shares	Dec. 31, 2015 shares
Accounting Policies [Abstract]
Reverse stock split ratio	0.25
Common stock, shares authorized	100,000,000	100,000,000	100,000,000
Reverse stock split, effective date		Aug. 17, 2016
Reverse stock split, description		Common stock at a ratio of one (1) share for every four (4) shares outstanding, so that every four (4) outstanding shares of common stock before the Reverse Split represents one (1) share of common stock after the Reverse Split.