Segment Data (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jul. 31, 2015	Jul. 31, 2014		Jul. 31, 2015	Jul. 31, 2014
Segment Reporting Information [Line Items]
Net sales from continuing operations	$ 29,465	$ 22,812	[1]	$ 54,284	$ 44,570	[1]
Sales Revenue, Percentage	100.00%	100.00%		100.00%	100.00%
Domestic [Member]
Segment Reporting Information [Line Items]
Net sales from continuing operations	$ 18,480	$ 11,970		$ 31,330	$ 24,160
Sales Revenue, Percentage	62.71%	52.48%		57.72%	54.21%
International [Member]
Segment Reporting Information [Line Items]
Net sales from continuing operations	$ 10,990	$ 10,840		$ 22,950	$ 20,410
Sales Revenue, Percentage	37.29%	47.52%		42.28%	45.79%

[1] Restated for discontinued operations.