Property, Plant, and Equipment (Details) - USD ($) $ in Thousands	Oct. 31, 2025	Jan. 31, 2025	Oct. 31, 2024
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 180,558	$ 177,096	$ 175,225
Less accumulated depreciation and amortization	(145,105)	(140,668)	(139,604)
Property, plant and equipment, net	35,453	36,428	35,621
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	3,731	3,731	3,731
Land improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	706	706	697
Buildings and building improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	52,050	52,030	51,950
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	123,422	119,972	118,324
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 649	$ 657	$ 523