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Divestiture and Discontinued Operations (Tables)
3 Months Ended
Jul. 31, 2013
Discontinued Operations And Disposal Groups [Abstract]  
Schedule of Revenues and Loss Before Income Taxes Attributable to Discontinued Operations

Revenues and income (loss) before income taxes attributable to discontinued operations for the three months ended July 31, 2013 and 2012, respectively, are as follows:

 

     Three Months Ended July 31,  
     2013      2012  

Revenues

   $ 3,312       $ 3,557   

Income (loss) before income taxes

   $ 329       $ (216