Goodwill and Intangible Assets (Tables)

3 Months Ended

Oct. 24, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in the carrying amount of goodwill for fiscal 2016 were as follows:



	Goodwill		Accumulated Impairment Losses			Total
	(Dollars in thousands)
Balance as of July 25, 2015	$	467,420	$	(195,767	)	$	271,653
Purchase price allocation adjustments	101		—			101
Goodwill from fiscal 2016 acquisitions	9,694		—			9,694
Balance as of October 24, 2015	$	477,215	$	(195,767	)	$	281,448

Schedule of Intangible Assets

The Company's intangible assets consisted of the following:



	Weighted Average Remaining Useful Lives	October 24, 2015		July 25, 2015
	(Years)	(Dollars in thousands)
Gross carrying amount:
Customer relationships	11.8	$	211,575	$	195,375
Contract backlog	0.9	8,076		8,076
Trade names	6.9	9,800		8,200
UtiliQuest trade name	—	4,700		4,700
Non-compete agreements	3.0	835		635
		234,986		216,986
Accumulated amortization:
Customer relationships		87,936		83,772
Contract backlog		7,574		7,381
Trade names		4,995		4,650
Non-compete agreements		315		257
		100,820		96,060
Net Intangible Assets		$	134,166	$	120,926

Future Amortization Expense

Estimated total amortization expense for existing finite-lived intangible assets for the remainder of fiscal 2016 and each of the five succeeding fiscal years and thereafter is as follows:



Period	Amount
	(Dollars in thousands)
Nine months ending July 30, 2016	$	14,157
2017	17,419
2018	15,125
2019	12,771
2020	11,861
2021	10,333
Thereafter	47,800
Total	$	129,466