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Description of Business and Summary of Significant Accounting Policies (Tables)
 3 Months Ended
Oct. 31, 2015
Accounting Policies [Abstract]  
Schedule of foreign currency translation
The cumulative effects of foreign currency exchange rate fluctuations were as follows (in thousands):
Cumulative loss on foreign currency translation as of July 31, 2014
$
(18,992
)
Loss on foreign currency translation
(49,518
)
Cumulative loss on foreign currency translation as of July 31, 2015
$
(68,510
)
Loss on foreign currency translation
(6,663
)
Cumulative loss on foreign currency translation as of October 31, 2015
$
(75,173
)