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Goodwill and Intangible Assets (Tables)
 6 Months Ended
Jan. 28, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
Changes in the carrying amount of goodwill for fiscal 2017 were as follows (dollars in thousands):
 
Goodwill
 
Accumulated Impairment Losses
 
Total
Balance as of July 30, 2016
$
505,924

 
$
(195,767
)
 
$
310,157

Purchase price allocation adjustments
2,501

 
—

 
2,501

Balance as of January 28, 2017
$
508,425

 
$
(195,767
)
 
$
312,658
Impairment Calculation Rates

The table below outlines certain assumptions in each of the Company’s fiscal 2016, 2015, and 2014 annual quantitative impairment analyses:
 
2016
 
2015
 
2014
Terminal Growth Rate
2.0% - 3.0%
 
1.5% - 2.5%
 
1.5% - 3.0%
Discount Rate
11.5%
 
11.5%
 
11.5%
Schedule of Intangible Assets
The Company’s intangible assets consisted of the following (dollars in thousands):
 
Weighted Average Remaining Useful Lives (Years)
 
January 28, 2017
 
July 30, 2016
Gross carrying amount:
 
 
 
 
 
Customer relationships
12.3
 
$
289,917

 
$
289,955

Contract backlog
—
 
—

 
4,780

Trade names
7.6
 
9,650

 
9,800

UtiliQuest trade name
—
 
4,700

 
4,700

Non-compete agreements
2.4
 
685

 
685

 
 
 
304,952

 
309,920

Accumulated amortization:
 
 
 

 
 

Customer relationships
 
 
112,395

 
101,012

Contract backlog
 
 
—

 
4,666

Trade names
 
 
6,556

 
6,034

Non-compete agreements
 
 
433

 
329

 
 
 
119,384

 
112,041

Intangible assets, net
 
 
$
185,568

 
$
197,879