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Discounted Operations (Details) - Schedule of Disposal Groups Including Discontinued Operations (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Jul. 31, 2013
Jul. 31, 2012
Jul. 31, 2013
Jul. 31, 2012
Schedule of Disposal Groups Including Discontinued Operations [Abstract]        
Net sales and revenue $ 173 $ 518 $ 432 $ 1,115
Cost of sales 14 210 37 350
Income before income taxes 70 136 233 400
Provision for income taxes (27) (59) (91) (166)
Income from discontinued operations, net of tax 43 77 142 234
Gain on disposal 2 99 217 88
Provision for income taxes (1) (42) (85) (36)
Gain on disposal of discontinued operations, net of tax $ 1 $ 57 $ 132 $ 52