Goodwill and Intangible Assets (Tables)

3 Months Ended

Oct. 29, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

Changes in the carrying amount of goodwill for fiscal 2017 were as follows (dollars in thousands):

	Goodwill			Accumulated Impairment Losses			Total
Balance as of July 30, 2016	$	505,924		$	(195,767	)	$	310,157
Purchase price allocation adjustments	(1,488		)	—			(1,488		)
Balance as of October 29, 2016	$	504,436		$	(195,767	)	$	308,669

Schedule of Intangible Assets

The Company’s intangible assets consisted of the following (dollars in thousands):

	Weighted Average Remaining Useful Lives (In years)	October 29, 2016		July 30, 2016
Gross carrying amount:
Customer relationships	12.5	$	289,917	$	289,955
Contract backlog	0.1	4,780		4,780
Trade names	7.3	9,650		9,800
UtiliQuest trade name	—	4,700		4,700
Non-compete agreements	2.4	685		685
		309,732		309,920
Accumulated amortization:
Customer relationships		106,716		101,012
Contract backlog		4,751		4,666
Trade names		6,220		6,034
Non-compete agreements		381		329
		118,068		112,041
Intangible assets, net		$	191,664	$	197,879