Quarterly report pursuant to Section 13 or 15(d)

Net (Loss) Income Per Share - Schedule of Anti-dilutive Securities Excluded from Computation of Earnings Per Share (Detail)

v2.4.0.8
Net (Loss) Income Per Share - Schedule of Anti-dilutive Securities Excluded from Computation of Earnings Per Share (Detail)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Oct. 31, 2014
Oct. 31, 2013
Oct. 31, 2014
Oct. 31, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Anti-dilutive potentially outstanding common shares 1,270 559 530 1,426
Stock Options [Member]
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Anti-dilutive potentially outstanding common shares 1,007 557 318 942
Restricted Stock Units [Member]
       
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Anti-dilutive potentially outstanding common shares 263 2 212 484