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Divestiture Transactions and Discontinued Operations (Tables)
3 Months Ended
Jul. 31, 2014
Discontinued Operations And Disposal Groups [Abstract]  
Schedule of Revenues and Income Before Income Taxes Attributable to Discontinued Operations

Revenues and income before income taxes attributable to discontinued operations for the three months ended July 31, 2014 and 2013, respectively, are as follows:

 

     Three Months Ended
July 31,
 
     2014      2013  

Revenues

   $ —         $ 3,312   

Income before income taxes

   $ —         $ 329