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Property and Equipment (Tables)
9 Months Ended
Apr. 29, 2017
Property, Plant and Equipment [Abstract]  
Schedule of Property and Equipment
Property and equipment consisted of the following (dollars in thousands):
 
Estimated Useful Lives (Years)
 
April 29, 2017
 
July 30, 2016
 Land
 
$
3,475

 
$
3,475

 Buildings
10-35
 
12,006

 
11,969

 Leasehold improvements
1-10
 
13,959

 
13,753

 Vehicles
1-5
 
461,059

 
404,273

 Computer hardware and software
1-7
 
104,659

 
95,570

 Office furniture and equipment
1-10
 
11,949

 
10,374

 Equipment and machinery
1-10
 
274,728

 
242,079

 Total
 
 
881,835

 
781,493

 Less: accumulated depreciation
 
 
(503,427
)
 
(454,823
)
 Property and equipment, net
 
 
$
378,408

 
$
326,670