Brazil Transaction (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2016	Jul. 31, 2015
Transactions [Line Items]
Net sales from discontinuing operations	$ 0	$ 425	$ 0	$ 869
Gross profit from discontinuing operations	0	132	0	164
Operating expenses from discontinuing operations	0	279	0	763
Operating loss from discontinuing operations	0	(147)	0	(599)
Interest expense from discontinuing operations	0	75	0	256
Other expense from discontinuing operations	0	100	0	398
Loss from operation of discontinuing operations before income tax	0	(322)	0	(1,253)
Non-cash reclassification of Other Comprehensive Income to Statement of Operations (no impact on stockholders’ equity)	0	(1,286)	0	(1,286)
Loss from disposal of discontinued operations	0	(515)	0	(515)
Loss before taxes for discontinued operations	0	(2,123)	0	(3,054)
Income tax benefit from discontinued operations	0	(569)	0	(569)
Net loss from discontinued operations	$ 0	$ (1,554)	$ 0	$ (2,485)