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Inventories, Net
 12 Months Ended
Jul. 31, 2017
Inventory Disclosure [Abstract]  
Inventories, Net
Inventories, Net
 
A summary of inventories, net, is as follows:
 
 
July 31, 
 
2017
 
2016
Raw materials and parts
$
45,831

 
$
45,867

Work-in-process
13,484

 
13,178

Finished goods
48,262

 
37,831

Less: reserve for excess and obsolete inventory
(8,853
)
 
(5,390
)
Total
$
98,724

 
$
91,486