Segment Data (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Apr. 30, 2015	Apr. 30, 2014
Segment Reporting Information [Line Items]
Net sales from continuing operations	$ 24,819	$ 21,758	[1]
Sales Revenue, Percentage	100.00%	100.00%
Domestic [Member]
Segment Reporting Information [Line Items]
Net sales from continuing operations	12,840	12,200
Sales Revenue, Percentage	51.73%	56.07%
International [Member]
Segment Reporting Information [Line Items]
Net sales from continuing operations	$ 11,980	$ 9,560
Sales Revenue, Percentage	48.27%	43.93%

[1] Restated for discontinued operations.