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Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 125,756	$ 117,929
Less: Accumulated depreciation and amortization	(99,689)	(93,258)
Property, plant and equipment, net	26,067	24,671
Land and buildings
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 1,176	1,610
Property, plant and equipment, Estimated Useful Lives	40 years for buildings
Furniture and equipment
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 52,314	48,748
Furniture and equipment | Minimum
Property Plant And Equipment [Line Items]
Property, plant and equipment, Estimated Useful Lives	4 years
Furniture and equipment | Maximum
Property Plant And Equipment [Line Items]
Property, plant and equipment, Estimated Useful Lives	10 years
Computer software
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 33,289	32,359
Computer software | Minimum
Property Plant And Equipment [Line Items]
Property, plant and equipment, Estimated Useful Lives	5 years
Computer software | Maximum
Property Plant And Equipment [Line Items]
Property, plant and equipment, Estimated Useful Lives	10 years
Leasehold improvements
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 36,727	32,814
Property, plant and equipment, Estimated Useful Lives	Lesser of lease term or useful life
Design fees and tooling costs
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 2,250	$ 2,398
Property, plant and equipment, Estimated Useful Lives	3 years

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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