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Divestiture Transactions and Discontinued Operations (Tables)
12 Months Ended
Apr. 30, 2014
Discontinued Operations And Disposal Groups [Abstract]  
Schedule of Revenues and Loss Before Income Taxes Attributable to Discontinued Operations

Revenues and loss before income taxes attributable to discontinued operations for fiscal year 2014, 2013 and 2012, respectively, are as follows:

 

     Fiscal Year Ended April 30,  
     2014      2013     2012  

Revenues

   $ 3,316       $ 12,033      $ 12,865   

Income (loss) before income taxes

   $ 284       $ (4,480   $ (1,025