Property, Plant, and Equipment (Details) - USD ($) $ in Thousands	Jan. 31, 2025	Jan. 31, 2024
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 177,096	$ 170,924
Less accumulated depreciation and amortization	(140,668)	(136,356)
Property, plant, and equipment, net	36,428	34,568
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	3,731	3,731
Land improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	706	694
Buildings and building improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	52,030	51,576
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	119,972	114,400
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 657	$ 523