Quarterly report pursuant to Section 13 or 15(d)

Severance and Other Restructuring Costs - Additional Information (Detail)

v2.4.1.9
Severance and Other Restructuring Costs - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Apr. 30, 2015
Apr. 30, 2014
Restructuring and Related Activities [Abstract]    
Restructuring charges $ 212us-gaap_RestructuringCharges $ 474us-gaap_RestructuringCharges