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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%

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