Annual report pursuant to Section 13 and 15(d)

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

v2.4.0.8
Net Income (Loss) Per Share - Additional Information (Detail)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Earnings Per Share [Abstract]      
Shares excluded from dilutive shares outstanding because their effect was anti-dilutive 1,058,334 644,299 3,180,852