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Property and Equipment | 6 Months Ended
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Jan. 27, 2018
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) |  | January 27, 2018 |  | July 29, 2017 |  | July 30, 2016
Land | — |  | $ | 3,470 |  |  | $ | 3,470 |  |  | $ | 3,475 |
Buildings | 10-35 |  | 12,315 |  |  | 12,073 |  |  | 11,969 |
Leasehold improvements | 1-10 |  | 14,202 |  |  | 13,912 |  |  | 13,753 |
Vehicles | 1-5 |  | 536,379 |  |  | 496,820 |  |  | 404,273 |
Computer hardware and software | 1-7 |  | 117,058 |  |  | 107,779 |  |  | 95,570 |
Office furniture and equipment | 1-10 |  | 11,686 |  |  | 12,226 |  |  | 10,374 |
Equipment and machinery | 1-10 |  | 273,712 |  |  | 288,993 |  |  | 242,079 |
Total |  |  | 968,822 |  |  | 935,273 |  |  | 781,493 |
Less: accumulated depreciation |  |  | (554,054 | ) |  | (513,166 | ) |  | (454,823 | )
Property and equipment, net |  |  | $ | 414,768 |  |  | $ | 422,107 |  |  | $ | 326,670 |
Depreciation expense and repairs and maintenance were as follows (dollars in thousands):
| Six Months Ended |  | Fiscal Year Ended
| January 27, 2018 |  | July 29, 2017 |  | July 30, 2016 |  | July 25, 2015
Depreciation expense | $ | 72,961 |  |  | $ | 123,125 |  |  | $ | 105,514 |  |  | $ | 79,331 |
Repairs and maintenance expense | $ | 16,438 |  |  | $ | 31,272 |  |  | $ | 29,487 |  |  | $ | 22,054 |

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- Definition The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13-14) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=64827811&loc=d3e1361-107760 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64862545&loc=d3e2921-110230 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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