Goodwill and Intangible Assets (Tables)

9 Months Ended

Apr. 25, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

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



	Goodwill		Accumulated Impairment Losses			Total
	(Dollars in thousands)
Balance as of July 26, 2014	$	464,855	$	(195,767	)	$	269,088
Purchase price allocation adjustments	377		—			377
Balance as of April 25, 2015	$	465,232	$	(195,767	)	$	269,465

Schedule of Intangible Assets

The Company's intangible assets consisted of the following:



	April 25, 2015		July 26, 2014
	(Dollars in thousands)
Carrying amount:
Customer relationships	$	179,859	$	173,594
Contract backlog	8,076		15,285
Trade names	8,200		8,200
UtiliQuest trade name	4,700		4,700
Non-compete agreements	400		400
	201,235		202,179
Accumulated amortization:
Customer relationships	79,531		69,048
Contract backlog	7,121		13,490
Trade names	4,328		3,361
Non-compete agreements	224		164
	91,204		86,063
Net Intangible Assets	$	110,031	$	116,116

Future Amortization Expense

Estimated total amortization expense for existing intangible assets for the remainder of fiscal 2015 and each of the five succeeding fiscal years and thereafter is as follows (dollars in thousands):



Period	Amount
Three months ending July 25, 2015	$	4,147
2016	15,918
2017	14,403
2018	12,212
2019	9,792
2020	8,855
Thereafter	40,004
Total	$	105,331