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Property and Equipment
12 Months Ended
Jul. 29, 2017
Property, Plant and Equipment [Abstract]  
Property and Equipment
Property and Equipment
 
Property and equipment consisted of the following (dollars in thousands):
 
Estimated Useful Lives (Years)
 
July 29, 2017
 
July 30, 2016
 Land
 
$
3,470

 
$
3,475

 Buildings
10-35
 
12,073

 
11,969

 Leasehold improvements
1-10
 
13,912

 
13,753

 Vehicles
1-5
 
496,820

 
404,273

 Computer hardware and software
1-7
 
107,779

 
95,570

 Office furniture and equipment
1-10
 
12,226

 
10,374

 Equipment and machinery
1-10
 
288,993

 
242,079

 Total
 
 
935,273

 
781,493

 Less: accumulated depreciation
 
 
(513,166
)
 
(454,823
)
 Property and equipment, net
 
 
$
422,107

 
$
326,670



Depreciation expense and repairs and maintenance were as follows (dollars in thousands):
 
Fiscal Year Ended
 
2017
 
2016
 
2015
Depreciation expense
$
123,125

 
$
105,514

 
$
79,331

Repairs and maintenance expense
$
31,272

 
$
29,487

 
$
22,054