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Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) - USD ($)
$ in Thousands
Jan. 31, 2021
Jan. 31, 2020
Property, Plant and Equipment [Abstract]    
Land and Land Improvements $ 1,004 $ 967
Buildings and Leasehold Improvements 12,642 12,524
Machinery and Equipment 23,346 23,167
Computer Equipment and Software 13,847 11,388
Gross Property, Plant and Equipment 50,839 48,046
Accumulated Depreciation (38,828) (36,778)
Net Property Plant and Equipment $ 12,011 $ 11,268