XML 46 R36.htm IDEA: XBRL DOCUMENT v3.5.0.2
Goodwill and Other Intangible Assets - Future Estimated Amortization Expense Related to Amortizable Intangible Assets (Detail) - USD ($)
$ in Thousands
Jul. 31, 2016
Jan. 31, 2016
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]    
2017 $ 1,037  
2018 1,470  
2019 1,470  
2020 1,470  
2021 1,295  
2022 and thereafter 3,341  
Net Carrying Amount $ 10,083 $ 10,466