Inventories (Details) - USD ($) $ in Thousands	Jul. 31, 2015	Jan. 31, 2015
Inventory [Line Items]
Raw materials	$ 16,083	$ 14,379
Work-in-process	2,041	1,670
Finished goods	23,778	21,043
Inventory, Net, Total	$ 41,902	$ 37,092	[1]

[1] Restated for discontinued operations.