Discontinued Operations Discontinued operations balance sheet (Details) - USD ($) $ in Thousands	Jan. 31, 2016	Jan. 31, 2015
Discontinued operations [Line Items]
Cash and cash equivalents	$ 5	$ 608
Trade accounts receivable, net	5,720	7,516
Inventory	2,000	15,157
Other assets	349	2,003
Property, plant and equipment, net of accumulated depreciation	6,456	14,477
Non-current assets	1,203	1,715
Total assets from discontinued operations	15,733	41,476
Trade accounts payable, accrued expenses and other	7,514	10,016
Current maturities of long-term debt	5,322	806
Long-term liabilities	2,629	10,557
Total liabilities from discontinued operations	$ 15,465	$ 21,379