Brazil Transaction (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2016	Apr. 30, 2015
Transactions [Line Items]
Net sales from discontinuing operations	$ 0	$ 444
Gross profit from discontinuing operations	0	32
Operating expenses from discontinuing operations	0	484
Operating loss from discontinuing operations	0	(452)
Other (income) expense from discontinuing operations, net	0	(479)
Loss from operation of discontinuing operations before income tax	0	(931)
Net loss from discontinued operations	$ 0	$ (931)