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Goodwill and Other Intangible Assets - Future Estimated Amortization Expense Related to Amortizable Intangible Assets (Detail) - USD ($)
$ in Thousands
Oct. 31, 2018
Jan. 31, 2018
For fiscal years ending January 31 (in thousands):    
2019 $ 472  
2020 1,845  
2021 1,697  
2022 1,212  
2023 1,018  
2024 and thereafter 4,667  
Net Carrying Amount $ 10,911 $ 8,015