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 $)
9 Months Ended
Oct. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill, Impairment charges $ 0