Goodwill and Intangible Assets (Tables)

12 Months Ended

Jul. 25, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

Changes in the carrying amount of goodwill for fiscal 2015 and fiscal 2014 were as follows:

	Goodwill		Accumulated Impairment Losses			Total
	(Dollars in thousands)
Balance as of July 27, 2013	$	463,577	$	(195,767	)	$	267,810
Goodwill from fiscal 2014 acquisitions	1,278		—			1,278
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

Annual Impairment Analyses

The table below outlines certain assumptions in each of the Company's fiscal 2015, 2014, and 2013 annual quantitative impairment analyses:

	2015	2014	2013
Terminal Growth Rate Range	1.5% - 2.5%	1.5% - 3.0%	1.5% - 2.5%
Discount Rate	11.5%	11.5%	11.5%

Schedule of Intangible Assets

The Company's intangible assets consisted of the following:

	Weighted Average Remaining Useful Lives	July 25, 2015		July 26, 2014
	(Years)	(Dollars in thousands)
Gross carrying amount:
Customer relationships	11.6	$	195,375	$	173,594
Contract backlog	2.4	8,076		15,285
Trade names	3.4	8,200		8,200
UtiliQuest trade name	—	4,700		4,700
Non-compete agreements	2.2	635		400
		216,986		202,179
Accumulated amortization:
Customer relationships		83,772		69,048
Contract backlog		7,381		13,490
Trade names		4,650		3,361
Non-compete agreements		257		164
		96,060		86,063
Net Intangible Assets		$	120,926	$	116,116

Future Amortization Expense

Estimated total amortization expense for existing intangible assets for each of the five succeeding fiscal years and thereafter is as follows:

Period	Amount
	(Dollars in thousands)
2016	$	17,315
2017	15,788
2018	13,494
2019	11,142
2020	10,230
Thereafter	48,257
Total	$	116,226