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Business Segment Information (Tables)
6 Months Ended
Jan. 31, 2013
Business Segment Information [Abstract]  
Operating Results of Business Segments
(in thousands)
 
Telecom
Platform
Services
   
Consumer
Phone
Services
   
All Other
   
Corporate
   
Total
 
Three Months Ended January 31, 2013
                             
Revenues
  $ 402,758     $ 3,714     $ 5,213     $     $ 411,685  
Income (loss) from operations
    10,050       437       (807 )     (4,428 )     5,252  
                                         
Three Months Ended January 31, 2012
                                       
Revenues
  $ 357,588     $ 4,973     $ 2,888     $     $ 365,449  
Income (loss) from operations
    6,513       998       (260 )     (3,219 )     4,032  
                                         
Six Months Ended January 31, 2013
                                       
Revenues
  $ 794,791     $ 7,729     $ 9,750     $     $ 812,270  
Income (loss) from operations
    19,090       1,036       (2,439 )     (7,207 )     10,480  
                                         
Six Months Ended January 31, 2012
                                       
Revenues
  $ 726,653     $ 10,365     $ 5,208     $     $ 742,226  
(Loss) income from operations
    (836 )     2,208       (1,144 )     (7,258 )     (7,030 )