Property and Equipment - Schedule of Property and Equipment (Detail) - USD ($) $ in Thousands	Jul. 31, 2016	Jan. 31, 2016
Property Plant And Equipment [Line Items]
Property and equipment, at cost	$ 413,903	$ 425,347
Less - Accumulated depreciation	(304,554)	(311,850)
Property and equipment, net	109,349	113,497
Land [Member]
Property Plant And Equipment [Line Items]
Property and equipment, at cost	13,613	13,474
Buildings [Member]
Property Plant And Equipment [Line Items]
Property and equipment, at cost	36,263	36,175
Machinery and Equipment [Member]
Property Plant And Equipment [Line Items]
Property and equipment, at cost	$ 364,027	$ 375,698