Annual report pursuant to Section 13 and 15(d)

Goodwill and Intangible Assets - Additional Information (Detail)

v3.3.1.900
Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Jan. 31, 2016
Jan. 31, 2016
Jan. 31, 2015
Jan. 31, 2014
Feb. 02, 2015
Goodwill And Intangible Assets [Line Items]          
Goodwill $ 40,175 $ 40,175 $ 41,008 $ 45,150  
Goodwill, Impairment charges $ 0 15,787      
Amortization of intangible assets   4,800 $ 5,200 $ 4,600  
Timeline Labs [Member]          
Goodwill And Intangible Assets [Line Items]          
Goodwill         $ 15,787
Goodwill, Impairment charges   $ 15,800