Annual report pursuant to Section 13 and 15(d)

Net Income (Loss) Per Share - Additional Information (Detail)

v3.6.0.2
Net Income (Loss) Per Share - Additional Information (Detail) - shares
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Earnings Per Share [Abstract]      
Shares excluded from dilutive shares outstanding because their effect was anti-dilutive 220,473 912,257 1,273,889