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Goodwill and Intangible Assets (Tables) | 6 Months Ended
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Jan. 23, 2016
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | Changes in the carrying amount of goodwill for fiscal 2016 were as follows:
| Goodwill |  | Accumulated Impairment Losses |  | Total
| (Dollars in thousands)
Balance as of July 25, 2015 | $ | 467,420 |  |  | $ | (195,767 | ) |  | $ | 271,653 |
Purchase price allocation adjustments | 101 |  |  | — |  |  | 101 |
Goodwill from fiscal 2016 acquisitions | 9,694 |  |  | — |  |  | 9,694 |
Balance as of January 23, 2016 | $ | 477,215 |  |  | $ | (195,767 | ) |  | $ | 281,448 |
Schedule of Intangible Assets | The Company's intangible assets consisted of the following:
| Weighted Average Remaining Useful Lives |  | January 23, 2016 |  | July 25, 2015
| (Years) |  | (Dollars in thousands)
Gross carrying amount: |  |  |  |  |
Customer relationships | 11.6 |  | $ | 211,575 |  |  | $ | 195,375 |
Contract backlog | 0.9 |  | 4,780 |  |  | 8,076 |
Trade names | 7.0 |  | 9,800 |  |  | 8,200 |
UtiliQuest trade name | — |  | 4,700 |  |  | 4,700 |
Non-compete agreements | 2.9 |  | 685 |  |  | 635 |
|  |  | 231,540 |  |  | 216,986 |
Accumulated amortization: |  |  |  |  |  |  |
Customer relationships |  |  | 92,079 |  |  | 83,772 |
Contract backlog |  |  | 4,472 |  |  | 7,381 |
Trade names |  |  | 5,337 |  |  | 4,650 |
Non-compete agreements |  |  | 221 |  |  | 257 |
|  |  | 102,109 |  |  | 96,060 |
Net Intangible Assets |  |  | $ | 129,431 |  |  | $ | 120,926 |
Future Amortization Expense | Estimated total amortization expense for existing finite-lived intangible assets for the remainder of fiscal 2016 and each of the five succeeding fiscal years and thereafter is as follows:
Period |  | Amount
|  | (Dollars in thousands)
Six months ending July 30, 2016 |  | $ | 9,422 |
2017 |  | 17,419 |
2018 |  | 15,125 |
2019 |  | 12,771 |
2020 |  | 11,861 |
2021 |  | 10,333 |
Thereafter |  | 47,800 |
Total |  | $ | 124,731 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 + Details
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