Goodwill and Intangible Assets (Tables)

12 Months Ended

Jul. 27, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

The Company's goodwill balance was $267.8 million as of July 27, 2013 and $174.8 million as of both July 28, 2012 and July 30, 2011. Changes in the carrying amount of goodwill for fiscal 2013 are as follows:



							Fiscal 2013 Changes
	As of			As of			Impairment				As of
	July 30, 2011			July 28, 2012			Losses		Acquisitions		July 27, 2013
	(Dollars in thousands)
Goodwill	$	370,616		$	370,616		$	—	$	92,961	$	463,577
Accumulated impairment losses	(195,767		)	(195,767		)	—		—		(195,767		)
	$	174,849		$	174,849		$	—	$	92,961	$	267,810

Annual Impairment Analyses

The table below outlines the key assumptions in each of the Company's fiscal 2013, 2012 and 2011 annual quantitative impairment analyses:



	2013	2012	2011
Terminal Growth Rate Range	1.5% - 2.5%	1.5% - 3%	1.5% - 3%
Discount Rate	11.5%	13.0%	13.5%

Schedule of Intangible Assets

The Company's intangible assets consist of the following:



	Weighted Average Remaining Useful Lives	July 27, 2013		July 28, 2012
	(Years)	(Dollars in thousands)
Carrying amount:
Customer relationships	12.4	$	164,497	$	89,145
Contract backlog	2.3	15,285		—
Trade names	5.1	8,200		2,860
UtiliQuest trade name	—	4,700		4,700
Non-compete agreements	4.3	400		150
		193,082		96,855
Accumulated amortization:
Customer relationships		56,219		45,852
Contract backlog		9,433		—
Trade names		2,071		1,182
Non-compete agreements		84		48
Net Intangible Assets		$	125,275	$	49,773

Future Amortization Expense

Estimated total amortization expense for each of the five succeeding fiscal years is as follows (including amortization for the newly acquired businesses based on the purchase price allocations as of July 27, 2013):



Period		Amount
		(Dollars in thousands)
2014		$18,125
2015		$15,035
2016		$14,315
2017		$12,893
2018		$10,705
Thereafter		$49,502