Segment Data (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2016	Oct. 31, 2015
Segment Reporting Information [Line Items]
Net sales from continuing operations	$ 23,243	$ 24,888	$ 65,881	$ 79,172
Domestic [Member]
Segment Reporting Information [Line Items]
Net sales from continuing operations	$ 11,260	$ 14,660	$ 35,240	$ 45,980
Sales Revenue, Percentage	48.45%	58.88%	53.49%	58.08%
International [Member]
Segment Reporting Information [Line Items]
Net sales from continuing operations	$ 11,980	$ 10,230	$ 30,640	$ 33,190
Sales Revenue, Percentage	51.55%	41.12%	46.51%	41.92%
Sales Revenue, Net [Member]
Segment Reporting Information [Line Items]
Net sales from continuing operations	$ 23,240	$ 24,890	$ 65,880	$ 79,170
Sales Revenue, Percentage	100.00%	100.00%	100.00%	100.00%