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Commitments and Contingencies (Tables)
 12 Months Ended
Jul. 31, 2016
Commitments and Contingencies Disclosure [Abstract]  
Schedule of future minimum lease commitments under noncancelable capital and operating leases
The future minimum lease commitments for the next five fiscal years, under non-cancelable capital and operating leases with initial or remaining lease terms in excess of one year were as follows:
 
Year Ended July 31,
(In thousands)
2017
 
2018
 
2019
 
2020
 
2021
 
Thereafter
 
Subtotal
 
Less
Amount
Representing
Interest
 
Total
Operating leases
$
23,217

 
$
20,154

 
$
16,179

 
$
12,777

 
$
9,847

 
$
61,904

 
$
144,078

 
$
—

 
$
144,078

Capital leases
1,124

 
1,093

 
909

 
—

 
—

 
—

 
3,126

 
(194
)
 
2,932