Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets - Additional Information (Detail)

v2.4.0.8
Goodwill and Intangible Assets - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Apr. 30, 2014
Goodwill And Intangible Assets Disclosure [Abstract]  
Goodwill, Impairment charges $ 0