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Goodwill and Other Intangible Assets - Future Estimated Amortization Expense Related to Amortizable Intangible Assets (Detail) - USD ($)
$ in Thousands
Apr. 30, 2019
Jan. 31, 2019
For fiscal years ending January 31    
2020 $ 1,437  
2021 1,707  
2022 1,199  
2023 1,098  
2024 894  
Thereafter 3,805  
Net Carrying Amount $ 10,140 $ 10,495