XML 67 R53.htm IDEA: XBRL DOCUMENT v3.7.0.1
Intangible Assets and Goodwill - Estimated Amortization Expense (Detail) - USD ($)
$ in Thousands
Jan. 31, 2017
Jan. 31, 2016
Finite Lived Intangible Assets Future Amortization Expense Current And Five Succeeding Fiscal Years [Abstract]    
Fiscal 2018 $ 7,798  
Fiscal 2019 6,964  
Fiscal 2020 6,062  
Fiscal 2021 3,629  
Fiscal 2022 3,182  
Thereafter 11,648  
Intangible assets, Net $ 39,283 $ 47,500