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Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Jan. 26, 2019
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | The Company’s goodwill balance was $325.7 million and $321.7 million as of January 26, 2019 and January 27, 2018 respectively. Changes in the carrying amount of goodwill were as follows (dollars in thousands):
| Goodwill |  | Accumulated Impairment Losses |  | Total
Balance as of July 29, 2017 | $ | 517,515 |  |  | $ | (195,767 | ) |  | $ | 321,748 |
Purchase price allocation adjustments from fiscal 2017 acquisition | (5 | ) |  | — |  |  | (5 | )
Balance as of January 27, 2018 | 517,510 |  |  | (195,767 | ) |  | 321,743 |
Goodwill from fiscal 2019 acquisition | 4,097 |  |  | — |  |  | 4,097 |
Purchase price allocation adjustments from fiscal 2019 acquisition | (91 | ) |  | — |  |  | (91 | )
Balance as of January 26, 2019 | $ | 521,516 |  |  | $ | (195,767 | ) |  | $ | 325,749 |
Impairment Calculation Rates | The table below outlines certain assumptions used in the Company’s quantitative impairment analyses for fiscal 2019, the 2018 transition period, fiscal 2017, and fiscal 2016:
| Fiscal Year Ended |  | Six Months Ended |  | Fiscal Year Ended
| January 26, 2019 |  | January 27, 2018 |  | July 29, 2017 |  | July 30, 2016
Terminal Growth Rate | 2.5% - 3.0% |  | 2.5% - 3.0% |  | 2.0% - 3.0% |  | 2.0% - 3.0%
Discount Rate | 11.0% |  | 11.0% |  | 11.0% |  | 11.5%
Schedule of Intangible Assets | The Company’s intangible assets consisted of the following (dollars in thousands):
| January 26, 2019 |  | January 27, 2018
| Weighted Average Remaining Useful Lives (Years) |  | Gross Carrying Amount |  | Accumulated Amortization |  | Intangible Assets, Net |  | Gross Carrying Amount |  | Accumulated Amortization |  | Intangible Assets, Net
Customer relationships | 11.1 |  | $ | 312,017 |  |  | $ | 157,691 |  |  | $ | 154,326 |  |  | $ | 299,717 |  |  | $ | 135,544 |  |  | $ | 164,173 |
Trade names | 8.0 |  | 10,350 |  |  | 8,312 |  |  | 2,038 |  |  | 10,350 |  |  | 7,872 |  |  | 2,478 |
UtiliQuest trade name | — |  | 4,700 |  |  | — |  |  | 4,700 |  |  | 4,700 |  |  | — |  |  | 4,700 |
Non-compete agreements | 1.5 |  | 200 |  |  | 139 |  |  | 61 |  |  | 450 |  |  | 332 |  |  | 118 |
|  |  | $ | 327,267 |  |  | $ | 166,142 |  |  | $ | 161,125 |  |  | $ | 315,217 |  |  | $ | 143,748 |  |  | $ | 171,469 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense | As of January 26, 2019, total amortization expense for existing finite-lived intangible assets for the next five fiscal years and thereafter is as follows (dollars in thousands):
|  | Amount
2020 |  | $ | 21,180 |
2021 |  | 20,663 |
2022 |  | 17,490 |
2023 |  | 15,334 |
2024 |  | 13,903 |
Thereafter |  | 67,855 |
Total |  | $ | 156,425 |

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