Goodwill and Intangible Assets (Tables)

12 Months Ended

Jul. 30, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the carrying amount of goodwill for fiscal 2016 and 2015 were as follows (dollars in thousands):



	Goodwill		Accumulated Impairment Losses			Total
Balance as of July 26, 2014	$	464,855	$	(195,767	)	$	269,088
Purchase price allocation adjustments	377		—			377
Goodwill from fiscal 2015 acquisitions	2,188		—			2,188
Balance as of July 25, 2015	467,420		(195,767		)	271,653
Purchase price allocation adjustments	101		—			101
Goodwill from fiscal 2016 acquisitions	38,403		—			38,403
Balance as of July 30, 2016	$	505,924	$	(195,767	)	$	310,157

Impairment Testing Assumptions

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 Range	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 (In years)	July 30, 2016		July 25, 2015
Gross carrying amount:
Customer relationships	12.7	$	289,955	$	195,375
Contract backlog	0.3	4,780		8,076
Trade names	7.1	9,800		8,200
UtiliQuest trade name	—	4,700		4,700
Non-compete agreements	2.6	685		635
		309,920		216,986
Accumulated amortization:
Customer relationships		101,012		83,772
Contract backlog		4,666		7,381
Trade names		6,034		4,650
Non-compete agreements		329		257
		112,041		96,060
Net Intangible Assets		$	197,879	$	120,926

Future Amortization Expense

As of July 30, 2016, total amortization expense for existing finite-lived intangible assets for each of the five succeeding fiscal years and thereafter is as follows (dollars in thousands):



	Amount
2017	$	24,374
2018	22,073
2019	19,719
2020	18,810
2021	17,394
Thereafter	90,809
Total	$	193,179