Goodwill and Intangible Assets (Tables)

3 Months Ended

Oct. 26, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets

The Company's intangible assets consist of the following:

	Weighted Average Remaining Useful Lives	October 26, 2013		July 27, 2013
	(Years)	(Dollars in thousands)
Carrying amount:
Customer relationships	12.1	$	164,394	$	164,497
Contract backlog	2.3	15,285		15,285
Trade names	4.8	8,200		8,200
UtiliQuest trade name	—	4,700		4,700
Non-compete agreements	4.1	400		400
		192,979		193,082
Accumulated amortization:
Customer relationships		59,454		56,219
Contract backlog		11,006		9,433
Trade names		2,394		2,071
Non-compete agreements		104		84
Net Intangible Assets		$	120,021	$	125,275

Future Amortization Expense

Estimated total amortization expense for the remainder of fiscal 2014 and each of the five succeeding fiscal years is as follows:

Period	Amount
	(Dollars in thousands)
Nine months ending July 26, 2014	$12,963
2015	$15,027
2016	$14,276
2017	$12,885
2018	$10,697
2019	$8,395
Thereafter	$41,078