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Discontinued Operations (Tables)
6 Months Ended
Jul. 31, 2014
Discontinued Operations and Disposal Groups [Abstract]  
Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures [Table Text Block] Below is a table reflecting certain items of the Consolidated Condensed Statements of Operations that were reclassified as discontinued operations for the periods indicated (amounts in thousands):

    Three Months Ended
October 31,
    Nine Months Ended
October 31,
 
    2014     2013     2014     2013  
                                 
Net sales and revenue   $     $ 392     $     $ 1,473  
Cost of sales           146       (8 )     341  
                                 
Income before income taxes           471       8       912  
Provision for income taxes           (184 )     (3 )     (356 )
Income from discontinued operations, net of tax   $     $ 287     $ 5     $ 556  
Gain on disposal   $ 210     $ 983     $ 217     $ 1,200  
Provision for income taxes     (72 )     (383 )     (81 )     (468 )
Gain on disposal of discontinued operations, net of tax   $ 138     $ 600     $ 136     $ 732