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Description of Business and Summary of Significant Accounting Policies (Tables)
 3 Months Ended
Oct. 31, 2019
Accounting Policies [Abstract]  
Contract with Customer, Asset and Liability [Table Text Block]
The change in the carrying amount of contract assets was as follows (in thousands):
Balance as of July 31, 2019
 
$
10,574

Capitalized contract assets during the period
 
—

Costs amortized during the period
 
(875
)
Effect of foreign currency exchange rates
 
432

Balance as of October 31, 2019
 
$
10,131
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, 2018
 
$
(107,928
)
Loss on foreign currency translation
 
(24,601
)
Cumulative loss on foreign currency translation as of July 31, 2019
 
$
(132,529
)
Gain on foreign currency translation
 
13,239

Cumulative loss on foreign currency translation as of October 31, 2019
 
$
(119,290
)