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Property and Equipment (Details) - Schedule of Property Plant and Equipment - USD ($) $ in Thousands	Apr. 30, 2016	Jan. 31, 2016
Schedule of Property Plant and Equipment [Abstract]
Land and improvements	$ 21,598	$ 21,598
Buildings and improvements	24,543	24,543
Machinery, equipment and fixtures	240,893	237,735
Construction in progress	6,936	6,094
	293,970	289,970
Less: accumulated depreciation	(104,761)	(99,994)
Total	$ 189,209	$ 189,976

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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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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.

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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.

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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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