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SEGMENT INFORMATION (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Apr. 30, 2019
USD ($)
Apr. 30, 2018
USD ($)
Apr. 30, 2019
USD ($)
segment
Apr. 30, 2018
USD ($)
Jul. 31, 2018
USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items]          
Number of reportable segments | segment     1    
Total revenue $ 287,624 $ 289,413 $ 936,267 $ 851,709  
U.S.          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Total revenue 158,263 135,276 519,923 488,416  
Long-lived assets 175,100   175,100   $ 130,000
Asia Pacific          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Total revenue 66,105 68,622 205,115 172,774  
Europe, the Middle East and Africa          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Total revenue 52,853 74,916 177,260 164,089  
Other Americas          
Revenues from External Customers and Long-Lived Assets [Line Items]          
Total revenue $ 10,403 $ 10,599 $ 33,969 $ 26,430