Property and Equipment (Details) - Schedule of Property Plant and Equipment (USD $) In Thousands, unless otherwise specified	Apr. 30, 2015	Jan. 31, 2015
Schedule of Property Plant and Equipment [Abstract]
Land and improvements	$ 20,401us-gaap_Land	$ 20,844us-gaap_Land
Buildings and improvements	26,037us-gaap_BuildingsAndImprovementsGross	27,069us-gaap_BuildingsAndImprovementsGross
Machinery, equipment and fixtures	233,385us-gaap_MachineryAndEquipmentGross	231,422us-gaap_MachineryAndEquipmentGross
Construction in progress	884us-gaap_ConstructionInProgressGross	1,290us-gaap_ConstructionInProgressGross
	280,707us-gaap_PropertyPlantAndEquipmentGross	280,625us-gaap_PropertyPlantAndEquipmentGross
Less: accumulated depreciation	(90,397)	(86,178)
	$ 190,310us-gaap_PropertyPlantAndEquipmentNet	$ 194,447us-gaap_PropertyPlantAndEquipmentNet

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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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-Publisher FASB

-Name Accounting Standards Codification

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Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

+ References

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Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

+ References

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Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

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Amount before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office 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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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services 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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