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Warranties (Tables)
 12 Months Ended
Jul. 31, 2017
Product Warranties Disclosures [Abstract]  
Summary of activity in warranty reserves
A summary of activity in the warranty reserves follows:

 
Year Ended July 31,
 
2017
 
2016
Beginning balance
$
2,575

 
$
1,740

Acquisitions
179

 
28

Provisions
4,880

 
4,554

Settlements
(5,306
)
 
(3,622
)
Foreign currency translation
—

 
(125
)
Ending balance
$
2,328

 
$
2,575