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Goodwill and Intangible Assets (Tables) | 9 Months Ended
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Apr. 25, 2015
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | Changes in the carrying amount of goodwill for fiscal 2015 were as follows:
| Goodwill |  | Accumulated Impairment Losses |  | Total
| (Dollars in thousands)
Balance as of July 26, 2014 | $ | 464,855 |  |  | $ | (195,767 | ) |  | $ | 269,088 |
Purchase price allocation adjustments | 377 |  |  | — |  |  | 377 |
Balance as of April 25, 2015 | $ | 465,232 |  |  | $ | (195,767 | ) |  | $ | 269,465 |
Schedule of Intangible Assets | The Company's intangible assets consisted of the following:
| April 25, 2015 |  | July 26, 2014
| (Dollars in thousands)
Carrying amount: |  |  |
Customer relationships | $ | 179,859 |  |  | $ | 173,594 |
Contract backlog | 8,076 |  |  | 15,285 |
Trade names | 8,200 |  |  | 8,200 |
UtiliQuest trade name | 4,700 |  |  | 4,700 |
Non-compete agreements | 400 |  |  | 400 |
| 201,235 |  |  | 202,179 |
Accumulated amortization: |  |  |  |  |
Customer relationships | 79,531 |  |  | 69,048 |
Contract backlog | 7,121 |  |  | 13,490 |
Trade names | 4,328 |  |  | 3,361 |
Non-compete agreements | 224 |  |  | 164 |
| 91,204 |  |  | 86,063 |
Net Intangible Assets | $ | 110,031 |  |  | $ | 116,116 |
Future Amortization Expense | Estimated total amortization expense for existing intangible assets for the remainder of fiscal 2015 and each of the five succeeding fiscal years and thereafter is as follows (dollars in thousands):
Period |  | Amount
Three months ending July 25, 2015 |  | $ | 4,147 |
2016 |  | 15,918 |
2017 |  | 14,403 |
2018 |  | 12,212 |
2019 |  | 9,792 |
2020 |  | 8,855 |
Thereafter |  | 40,004 |
Total |  | $ | 105,331 |

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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + 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 + Details
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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 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 Reference 2: 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 + Details
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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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