Dycom Industries (DY) 10-Q 29 Nov 13 2014 FY Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	3 Months Ended
	Oct. 26, 2013	Nov. 22, 2013	Jan. 26, 2013
Document and Entity Information [Abstract]	'	'	'
Entity Registrant Name	'DYCOM INDUSTRIES INC	'	'
Entity Central Index Key	'0000067215	'	'
Current Fiscal Year End Date	'--07-26	'	'
Entity Well-known Seasoned Issuer	'No	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Filer Category	'Large Accelerated Filer	'	'
Entity Public Float	'	'	$688,599,652
Entity Common Stock, Shares Outstanding	'	33,755,060	'
Document Fiscal Year Focus	'2014	'	'
Document Fiscal Period Focus	'FY	'	'
Document Type	'10-Q	'	'
Amendment Flag	'false	'	'
Document Period End Date	26-Oct-13	'	'

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Oct. 26, 2013	Jul. 27, 2013
In Thousands, unless otherwise specified
CURRENT ASSETS:	'	'
Cash and equivalents	$14,394	$18,607
Accounts receivable, net	304,412	252,202
Costs and estimated earnings in excess of billings	221,110	204,349
Inventories	39,273	35,999
Deferred tax assets, net	17,718	16,853
Income taxes receivable	2,231	2,516
Other current assets	16,192	10,608
Total current assets	615,330	541,134
PROPERTY AND EQUIPMENT, NET	203,916	202,703
GOODWILL	267,810	267,810
INTANGIBLE ASSETS, NET	120,021	125,275
OTHER	17,199	17,286
TOTAL NON-CURRENT ASSETS	608,946	613,074
TOTAL ASSETS	1,224,276	1,154,208
CURRENT LIABILITIES:	'	'
Accounts payable	68,926	77,954
Current portion of debt	8,594	7,813
Billings in excess of costs and estimated earnings	13,347	13,788
Accrued insurance claims	31,528	29,069
Other accrued liabilities	79,453	71,191
Total current liabilities	201,848	199,815
LONG-TERM DEBT (including debt premium of $3.8 million at January 26, 2013)	475,735	444,169
ACCRUED INSURANCE CLAIMS	30,114	27,250
DEFERRED TAX LIABILITIES, NET NON-CURRENT	49,603	48,612
OTHER LIABILITIES	5,992	6,001
Total liabilities	763,292	725,847
COMMITMENTS AND CONTINGENCIES	'	'
STOCKHOLDERS' EQUITY:	'	'
Preferred stock, par value $1.00 per share: 1,000,000 shares authorized: no shares issued and outstanding	0	0
Common stock, par value $0.33 1/3 per share: 150,000,000 shares authorized: 32,993,267 and 33,587,744 issued and outstanding, respectively	11,248	11,088
Additional paid-in capital	129,068	115,205
Accumulated other comprehensive income	43	103
Retained earnings	320,625	301,965
Total stockholders' equity	460,984	428,361
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$1,224,276	$1,154,208

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Oct. 26, 2013	Jul. 27, 2013
In Millions, except Share data, unless otherwise specified
LIABILITIES:	'	'
Debt premium	$3.50	$3.60
STOCKHOLDERS' EQUITY:	'	'
Preferred stock, par value (in dollars per share)	$1	$1
Preferred stock, authorized (in shares)	1,000,000	1,000,000
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$0.33	$0.33
Common stock, authorized (in shares)	150,000,000	150,000,000
Common stock, issued (in shares)	33,743,879	33,264,117
Common stock, outstanding (in shares)	33,264,117	33,587,744

CONSOLIDATED_STATEMENTS_OF_OPE

CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
REVENUES:	'	'
Contract revenues	$512,720	$323,286
EXPENSES:	'	'
Costs of earned revenues, excluding depreciation and amortization	410,119	257,066
General and administrative (including stock-based compensation expense of $3.5 million and $2.3 million, respectively)	43,075	28,824
Depreciation and amortization	23,552	15,311
Total	476,746	301,201
Interest expense, net	-6,886	-4,197
Other income, net	2,012	1,614
INCOME BEFORE INCOME TAXES	31,100	19,502
PROVISION FOR INCOME TAXES:	'	'
Current	12,327	8,858
Deferred	113	-1,217
Total	12,440	7,641
NET INCOME	$18,660	$11,861
Earnings Per Common Share:	'	'
Basic earnings per common share	$0.56	$0.36
Diluted earnings per common share	$0.54	$0.35
SHARES USED IN COMPUTING EARNINGS PER COMMON SHARE:	'	'
Basic	33,423,678	33,089,959
Diluted	34,638,998	33,721,070

CONSOLIDATED_STATEMENTS_OF_OPE1

CONSOLIDATED STATEMENTS OF OPERATIONS (Parenthetical) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
EXPENSES:	'	'
General and administrative, stock based compensation expense	$3.50	$2.30

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Statement (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
Statement of Comprehensive Income [Abstract]	'	'
NET INCOME	$18,660	$11,861
Foreign currency translation (losses) gains	-60	2
COMPREHENSIVE INCOME	$18,600	$11,863

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
OPERATING ACTIVITIES:	'	'
Net income	$18,660	$11,861
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation and amortization	23,552	15,311
Bad debt expense, net	186	9
Gain on sale of fixed assets	-1,865	-1,581
Deferred income tax provision (benefit)	113	-1,217
Stock-based compensation	3,506	2,266
Amortization of premium on long-term debt	-91	0
Amortization of debt issuance costs and other	465	329
Excess tax benefit from share-based awards	-656	-64
Change in operating assets and liabilities:	'	'
Accounts receivable, net	-52,397	-12,015
Costs and estimated earnings in excess of billings, net	-17,202	8,838
Other current assets and inventory	-8,740	-3,509
Other assets	-430	-62
Income taxes receivable/payable	8,101	8,773
Accounts payable	871	3,879
Accrued liabilities, insurance claims, and other liabilities	7,234	-5,102
Net cash provided by operating activities	-18,693	27,716
INVESTING ACTIVITIES:	'	'
Capital expenditures	-30,288	-12,523
Proceeds from sale of assets	2,465	2,006
Changes in restricted cash	-305	0
Net cash used in investing activities	-28,128	-10,517
FINANCING ACTIVITIES:	'	'
Proceeds from borrowings on Senior Credit Agreement	164,000	0
Principal payments on Senior Credit Agreement	-131,563	0
Repurchases of common stock	0	-15,203
Exercise of stock options and other	10,124	166
Restricted stock tax withholdings	-609	-62
Excess tax benefit from share-based awards	656	64
Principal payments on capital lease obligations	0	-19
Net cash provided by financing activities	42,608	-15,054
Net (decrease) increase in cash and equivalents	-4,213	2,145
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	18,607	52,581
CASH AND EQUIVALENTS AT END OF PERIOD	14,394	54,726
Cash paid during the period for:	'	'
Interest	1,517	489
Income taxes	4,311	85
Purchases of capital assets included in accounts payable or other accrued liabilities at period end	$3,384	$2,364

CONSOLIDATED_STATEMENTS_OF_CAS1

CONSOLIDATED STATEMENTS OF CASH FLOWS Consolidated Statement of Cash Flows (Parenthetical) (7.125% Senior Subordinated Notes Due 2021 Senior Subordinated Notes, USD $)	Oct. 26, 2013	Jul. 27, 2013
In Millions, unless otherwise specified
Debt, interest rate (in percent)	7.13%	7.13%

Basis_of_Presentation_and_Acco

Basis of Presentation and Accounting Policies	3 Months Ended
	Oct. 26, 2013
Accounting Policies [Abstract]	'
Accounting Policies	'
	Basis of Presentation and Accounting Policies
	Basis of Presentation - Dycom Industries, Inc. ("Dycom" or the "Company") is a leading provider of specialty contracting services throughout the United States and in Canada. These services include engineering, construction, maintenance and installation services to telecommunications providers, underground facility locating services to various utilities, including telecommunications providers, and other construction and maintenance services to electric and gas utilities and others.
	The accompanying unaudited condensed consolidated financial statements of Dycom and its subsidiaries, all of which are wholly-owned, have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X of the Securities and Exchange Commission (“SEC”). Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. The condensed consolidated financial statements and accompanying notes reflect all adjustments, consisting of only normal recurring accruals that are, in the opinion of management, necessary for a fair presentation of such statements. The results of operations for the three months ended October 26, 2013 are not necessarily indicative of the results expected for the full year or for any future period. The information included in these condensed consolidated financial statements should be read in conjunction with Management’s Discussion and Analysis of Financial Condition and Results of Operations contained in this report and the Company's audited financial statements for the year ended July 27, 2013 included in the Company's 2013 Annual Report on Form 10-K, filed with the SEC on September 13, 2013.
	The condensed consolidated financial statements of the Company include the accounts of its wholly-owned subsidiaries. All significant transactions and balances between the Company and its subsidiaries have been eliminated in consolidation.
	All of the Company's operating segments have been aggregated into one reporting segment due to their similar economic characteristics, customers, service distribution methods, and the nature of their services and production processes. The Company's services are provided by its various subsidiaries throughout the United States and in Canada. Revenues from services provided in Canada were approximately $3.3 million and $3.9 million during the three months ended October 26, 2013 and October 27, 2012, respectively. The Company had no material long-lived assets in the Canadian operations at October 26, 2013 or July 27, 2013.
	Acquisitions - On December 3, 2012, the Company acquired substantially all of the telecommunications infrastructure services subsidiaries of Quanta Services, Inc. Additionally, during the fourth quarter of fiscal 2013, the Company acquired Sage Telecommunications Corp of Colorado, LLC (“Sage”) and certain assets of a tower construction and maintenance company. The results of operations of the businesses acquired are included in the accompanying condensed consolidated financial statements from their dates of acquisition.
	Accounting Period - The Company uses a fiscal year ending on the last Saturday in July.
	Use of Estimates - The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. For the Company, key estimates include: recognition of revenue for costs and estimated earnings in excess of billings, accrued insurance claims, provision for income taxes, accruals for legal matters and other contingencies, the fair value of reporting units for goodwill impairment analysis, the assessment of impairment of intangibles and other long-lived assets, preliminary purchase price allocations of businesses acquired, stock-based compensation expense for performance-based stock awards, asset lives used in computing depreciation and amortization, and allowance for doubtful accounts. At the time they are made, the Company believes that such estimates are fair when considered in conjunction with the consolidated financial position and results of operations taken as a whole. However, actual results could differ from those estimates and such differences may be material to the financial statements.
	Significant Accounting Policies
	There were no material changes to the Company’s significant accounting policies and critical accounting estimates during the three months ended October 26, 2013. For a complete discussion of the Company’s significant accounting policies, refer to Note 1 to the Consolidated Financial Statements in the Company’s Annual Report on Form 10-K for the year ended July 27, 2013.
	Restricted Cash - As of October 26, 2013 and July 27, 2013, the Company had approximately $4.0 million and $3.7 million, respectively, in restricted cash which is held as collateral in support of the Company's insurance obligations. Restricted cash is included in other current assets and other assets in the condensed consolidated balance sheets and changes in restricted cash are reported in cash flows used in investing activities in the condensed consolidated statements of cash flows.
	Fair Value of Financial Instruments - ASC Topic 820, Fair Value Measurements and Disclosures ("ASC Topic 820") defines and establishes a measurement framework for fair value and expands disclosure requirements. ASC Topic 820 requires that assets and liabilities carried at fair value are classified and disclosed in one of the following three categories: (1) Level 1 - Quoted market prices in active markets for identical assets or liabilities; (2) Level 2 - Observable market-based inputs or unobservable inputs that are corroborated by market data; and (3) Level 3 - Unobservable inputs not corroborated by market data which require the reporting entity's own assumptions. The Company's financial instruments consist primarily of cash and equivalents, restricted cash, accounts receivables, income taxes receivable and payable, accounts payable and certain accrued expenses, and long-term debt. The carrying amounts of these items approximate fair value due to their short maturity, except for the Company's outstanding 7.125% senior subordinated notes due 2021 (the "2021 Notes") which are categorized as Level 2 as of October 26, 2013 and July 27, 2013, based on observable market-based inputs. See Note 10, Debt, for further information regarding the fair value of the 2021 Notes. The Company's cash and equivalents are categorized as Level 1 as of October 26, 2013 and July 27, 2013, based on quoted market prices in active markets for identical assets. During the three months ended October 26, 2013 and October 27, 2012, the Company had no non-recurring fair value measurements of assets or liabilities subsequent to their initial recognition.
	Recently Issued Accounting Pronouncements
	Adoption of New Accounting Pronouncements
	In July 2012, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update No. 2012-02, Intangibles-Goodwill and Other (Topic 350): Testing Indefinite-Lived Intangible Assets for Impairment ("ASU 2012-02"). ASU 2012-02 permits an entity to assess qualitative factors to determine whether it is more likely than not that an indefinite-lived intangible asset is impaired prior to any determination as to whether it is necessary to perform the quantitative impairment test required by ASC Topic 350. ASU 2012-02 is effective for annual and interim impairment tests performed for fiscal years beginning after September 15, 2012 and early adoption is permitted. The Company adopted ASU 2012-02 in fiscal 2014. The adoption of this guidance did not have a material effect on the Company's condensed consolidated financial statements.
	Accounting Standards Not Yet Adopted
	In February 2013, the FASB issued Accounting Standards Update No. 2013-04, Liabilities (Topic 405): Obligations Resulting from Joint and Several Liability Arrangements for Which the Total Amount of the Obligation Is Fixed at the Reporting Date (a consensus of the FASB Emerging Issues Task Force) (“ASU 2013-04”). ASU 2013-04 provides guidance related to the recognition, measurement, and disclosure of obligations resulting from joint and several liability arrangements for which the total amount of the obligation is fixed at the reporting date. The guidance requires an entity to measure those obligations as the sum of the amount the reporting entity agreed to pay on the basis of its arrangement among its co-obligors and any additional amount the reporting entity expects to pay on behalf of its co-obligors. ASU 2013-04 also requires an entity to disclose the nature and amount of the obligation. ASU 2013-05 is effective for fiscal years, and interim reporting periods within those years, beginning after December 15, 2013, with retrospective application required for all periods presented. The adoption of this guidance is not expected to have a material effect on the Company's condensed consolidated financial statements.
	In July 2013, the FASB issued Accounting Standards Update No. 2013-11, Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists ("ASU 2013-11"). ASU 2013-11 provides guidance on the financial statement presentation of unrecognized tax benefits when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. The guidance requires an unrecognized tax benefit, or a portion of it, be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward. To the extent the net operating loss carryforward, a similar tax loss, or a tax credit carryforward under the tax law of the applicable jurisdiction is not available at the reporting date to settle any additional income taxes that would result from the disallowance of a tax position or the tax law of the applicable jurisdiction, the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets. The assessment of whether a deferred tax asset is available is based on the unrecognized tax benefit and deferred tax asset that exist at the reporting date and should be made presuming disallowance of the tax position at the reporting date. ASU 2013-11 is effective for annual and interim periods for fiscal years beginning after December 15, 2013. The Company is currently evaluating the potential impact of ASU 2013-11 on its condensed consolidated financial statements.

Computation_of_Earnings_Per_Co

Computation of Earnings Per Common Share	3 Months Ended
	Oct. 26, 2013
Earnings Per Share [Abstract]	'
Computation of Earnings Per Common Share	'
	Computation of Earnings Per Common Share
	The following is a reconciliation of the numerator and denominator of the basic and diluted earnings per common share computation as required by ASC Topic 260, Earnings Per Share.
		For the Three Months Ended
		October 26, 2013		October 27, 2012
		(Dollars in thousands, except per share amounts)
	Net income available to common stockholders (numerator)	$	18,660	$	11,861
	Weighted-average number of common shares (denominator)	33,423,678		33,089,959
	Basic earnings per common share	$	0.56	$	0.36
	Weighted-average number of common shares	33,423,678		33,089,959
	Potential common stock arising from stock options, and unvested restricted share units	1,215,320		631,111
	Total shares-diluted (denominator)	34,638,998		33,721,070
	Diluted earnings per common share	$	0.54	$	0.35
	Anti-dilutive weighted shares excluded from the calculation of earnings per share	547,154		1,940,101

Acquisitions

Acquisitions	3 Months Ended
	Oct. 26, 2013
Business Combinations [Abstract]	'
Business Combination Disclosure	'
	Acquisitions
	On December 3, 2012, Dycom acquired substantially all of the telecommunications infrastructure services subsidiaries (the "Acquired Subsidiaries") of Quanta Services, Inc. for the sum of $275.0 million in cash, an adjustment of approximately $40.4 million for working capital received in excess of a target amount, and approximately $3.7 million for other specified items. The acquisition was funded through a combination of borrowings under a new $400 million credit facility and cash on hand. On December 12, 2012, Dycom's wholly-owned subsidiary, Dycom Investments, Inc., issued $90.0 million of 7.125% senior subordinated notes due 2021 and used the net proceeds to repay approximately $90.0 million of the credit facility borrowings. See Note 10, Debt, for further information regarding the Company's debt financing.
	The Acquired Subsidiaries provide specialty contracting services, including engineering, construction, maintenance and installation services to telecommunications providers, and other construction and maintenance services to electric and gas utilities and others. Principal business facilities are located in Arizona, California, Florida, Georgia, Minnesota, New York, Pennsylvania, and Washington. On a combined basis, Dycom's businesses serve hundreds of individual customers through operation in all 50 states, the District of Columbia, and in Canada.
	During the fourth quarter of fiscal 2013, the Company acquired Sage Telecommunications Corp of Colorado, LLC ("Sage") and certain assets of a tower construction and maintenance company for a total of $11.3 million, net of cash acquired. Goodwill of $5.0 million resulting from these acquisitions are expected to be deductible for tax purposes. Sage provides telecommunications construction and project management services primarily for cable operators in the Western United States. These acquisitions were not material to the Company.
	The purchase prices of the businesses acquired have been allocated to the tangible and intangible assets acquired and the liabilities assumed on the basis of their fair values on the respective dates of acquisition. Purchase price in excess of fair value of the separately identifiable assets acquired and the liabilities assumed have been allocated to goodwill. Purchase price allocations are based on information regarding the fair value of assets acquired and liabilities assumed as of the dates of acquisition. Management determined the fair values used in the purchase price allocations for intangible assets based on historical data, estimated discounted future cash flows, contract backlog amounts, if applicable, and expected royalty rates for trademarks and trade names as well as certain other assumptions. For the Acquired Subsidiaries, the fair values used in the purchase price allocation for intangible assets were determined with the assistance of an independent valuation specialist. The valuation of assets acquired and liabilities assumed requires a number of judgments and is subject to revision as additional information about the fair value of assets and liabilities becomes available. The allocation of the purchase price of the Acquired Subsidiaries was completed during the fourth quarter of fiscal 2013. Purchase price allocations of businesses acquired during the fourth quarter of fiscal 2013 are preliminary and are expected to be completed during fiscal 2014 when the valuations for intangible assets and other amounts are finalized. Additional information, which existed as of the acquisition dates but was unknown by the Company, may become known to the Company during the remainder of the measurement period, a period not to exceed twelve months from the acquisition date. Adjustments in the purchase price allocations may require an adjustment of the amounts allocated to goodwill.
	The purchase price of the Acquired Subsidiaries is allocated as follows and reflects the elimination of intercompany balances (dollars in millions):
	Assets
	Cash and equivalents	$	0.2
	Accounts receivable, net	112.2
	Costs and estimated earnings in excess of billings	61.5
	Inventories	9
	Other current assets	1.6
	Property and equipment	33.3
	Goodwill	87.9
	Intangibles - customer relationships	70.3
	Intangibles - backlog	15.3
	Intangibles - trade names	5
	Other assets	2.3
	Total assets	398.6
	Liabilities
	Accounts payable	42.1
	Billings in excess of costs and estimated earnings	10.3
	Accrued and other liabilities	27.1
	Total liabilities	79.5
	Net Assets Acquired	$	319.1
	Goodwill of $87.9 million and amortizing intangible assets of $90.6 million related to the acquisition is expected to be deductible for tax purposes. See Note 7, Goodwill and Intangible Assets, for further information on amortization and estimated useful lives of intangible assets acquired.
	The results of operations of businesses acquired have been included in the condensed consolidated statements of operations since the respective dates of acquisition. For the three months ended October 26, 2013 the Acquired Subsidiaries earned revenues of $150.3 million, recognized intangible amortization expense of $3.4 million, and their net income, inclusive of charges allocated for management costs, was $4.2 million.
	The following unaudited pro forma information presents the Company's consolidated results of operations as if the acquisition of the Acquired Subsidiaries had occurred on July 31, 2011, the first day of the Company's 2012 fiscal year. The pro forma results include certain adjustments, including depreciation and amortization expense based on the estimated fair value of the assets acquired, interest and debt amortization expense related to the Company's debt financing of the transaction, and the income tax impact of these adjustments. Pro forma earnings during the three months ended October 27, 2012 have been adjusted to reflect the impact of amortization and depreciation as if the acquisition had occurred on July 31, 2011. This includes the impact of amortization expense, including customer relationships and contract backlog which is being recognized on an accelerated basis related to the expected economic benefit, and depreciation expense which is recognized over the estimated useful lives of the related property and equipment. The unaudited pro forma information is not necessarily indicative of the results of operations of the combined companies had the acquisition occurred at the beginning of the periods presented nor is it indicative of future results.
			For the Three Months Ended
			October 27, 2012
			(Dollars in thousands, except per share amounts)
	Pro forma contract revenues		$	499,666
	Pro forma income before income taxes		$	36,205
	Pro forma net income		$	22,019
	Pro forma earnings per share:
	Basic		$	0.67
	Diluted		$	0.65

Accounts_Receivable

Accounts Receivable	3 Months Ended
	Oct. 26, 2013
Receivables [Abstract]	'
Accounts Receivable	'
	Accounts Receivable
	Accounts receivable consists of the following:
		October 26,			July 27,
		2013			2013
		(Dollars in thousands)
	Contract billings	$	291,083		$	239,498
	Retainage and other receivables	13,601			12,833
	Total	304,684			252,331
	Less: allowance for doubtful accounts	(272		)	(129		)
	Accounts receivable, net	$	304,412		$	252,202
	As of October 26, 2013, the Company expected to collect all retainage balances within the next twelve months. The Company maintains an allowance for doubtful accounts for estimated losses resulting from the failure of its customers to make required payments. During the three months ended October 26, 2013 and October 27, 2012, write-offs, net of recoveries, to the allowance for doubtful accounts were immaterial.

Costs_and_Estimated_Earnings_i

Costs and Estimated Earnings in Excess of Billings	3 Months Ended
	Oct. 26, 2013
Contractors [Abstract]	'
Costs and Estimated Earnings on Contracts in Excess of Billings	'
	Costs and Estimated Earnings in Excess of Billings
	Costs and estimated earnings in excess of billings, net, consists of the following:
		October 26,			July 27,
		2013			2013
		(Dollars in thousands)
	Costs incurred on contracts in progress	$	220,475		$	208,250
	Estimated to date earnings	53,473			49,150
	Total costs and estimated earnings	273,948			257,400
	Less: billings to date	(66,185		)	(66,839		)
		$	207,763		$	190,561
	Included in the accompanying condensed consolidated balance sheets under the captions:
	Costs and estimated earnings in excess of billings	$	221,110		$	204,349
	Billings in excess of costs and estimated earnings	(13,347		)	(13,788		)
		$	207,763		$	190,561
	The above amounts include revenue for services from contracts based both on the units-of-delivery and the cost-to-cost measures of the percentage of completion method.

Property_and_Equipment

Property and Equipment	3 Months Ended
	Oct. 26, 2013
Property, Plant and Equipment [Abstract]	'
Property and Equipment	'
	Property and Equipment
	Property and equipment consists of the following:
		General Useful Lives		October 26,				July 27,
				2013				2013
		(Years)		(Dollars in thousands)
	Land	—		$	3,479			$	3,479
	Buildings	Oct-35		11,511				11,449
	Leasehold improvements	15-Jan		5,273				5,154
	Vehicles	5-Jan		264,023				258,211
	Computer hardware and software	10-Mar		66,961				64,191
	Office furniture and equipment	7-Feb		8,155				7,915
	Equipment and machinery	10-Jan		176,344				171,742
	Total			535,746				522,141
	Less: accumulated depreciation			(331,830		)		(319,438		)
	Property and equipment, net			$	203,916			$	202,703
	Depreciation expense and repairs and maintenance were as follows:
		For the Three Months Ended
		October 26,				October 27,
		2013				2012
		(Dollars in thousands)
	Depreciation expense	$	18,401			$	13,720
	Repairs and maintenance expense	$	5,994			$	3,811

Goodwill_and_Intangible_Assets

Goodwill and Intangible Assets	3 Months Ended
	Oct. 26, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill and Intangible Assets	'
	Goodwill and Intangible Assets
	Goodwill
	The Company's goodwill balance was $267.8 million as of October 26, 2013 and July 27, 2013. Accordingly, there were no changes in the carrying amount of goodwill for the three months ended October 26, 2013. The Company's goodwill resides in multiple reporting units. The profitability of individual reporting units may suffer periodically from downturns in customer demand and other factors resulting from the cyclical nature of the Company's business, the high level of competition existing within the Company's industry, the concentration of the Company's revenues from a limited number of customers, and the level of overall economic activity. During times of slowing economic conditions, the Company's customers may reduce capital expenditures and defer or cancel pending projects. Individual reporting units may be more impacted by these factors than the Company as a whole. As a result, demand for the services of one or more of the Company's reporting units could decline, resulting in an impairment of goodwill or intangible assets. The reporting units goodwill and other related indefinite-lived intangible assets are assessed annually as of the first day of the fourth fiscal quarter of each year in accordance with ASC Topic 350, Intangibles – Goodwill and Other, in order to determine whether their carrying value exceeds their fair value. The inputs used for fair value measurements of the reporting units and other related indefinite-lived intangible assets are the lowest level (Level 3) inputs.
	As a result of the fiscal 2013 annual impairment analysis, the Company concluded that no impairment of goodwill or the indefinite-lived intangible asset was indicated at any reporting unit. However, the UtiliQuest reporting unit, having a goodwill balance of approximately $35.6 million and an indefinite-lived trade name of $4.7 million, has been at lower operating levels as compared to historical periods. The fair value of the UtiliQuest reporting unit exceeded its carrying value by approximately 20%. The UtiliQuest reporting unit provides services to a broad range of customers, including utilities and telecommunication providers. These services are required prior to underground excavation and are influenced by overall economic activity, including construction activity. The goodwill balance of this reporting unit may have an increased likelihood of impairment if a downturn in customer demand were to occur, or if the reporting unit were not able to execute against customer opportunities, and the long-term outlook for their cash flows were adversely impacted. Furthermore, changes in the long-term outlook for this reporting unit may result in changes to other valuation assumptions.
	As of October 26, 2013, the Company believes the goodwill and indefinite-lived intangible asset is recoverable for all of its reporting units; however, there can be no assurances that the goodwill and indefinite-lived intangible asset will not be impaired in future periods.
	Intangible Assets
	The Company's intangible assets consist of the following:
		Weighted Average Remaining Useful Lives		October 26,		July 27,
				2013		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
	Amortization of the Company's intangible assets of customer relationships and contract backlog is recognized on an accelerated basis as a function of the expected economic benefit. As a result, the weighted average remaining useful lives for these intangible assets is not representative of the average period in which the amortization expense will be recognized. Amortization for the Company's other finite-lived intangibles is recognized on a straight-line basis over the estimated useful life of the intangible asset. Amortization expense for finite-lived intangible assets for the three months ended October 26, 2013 and October 27, 2012 was $5.2 million and $1.6 million, respectively.
	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
	As of October 26, 2013, the Company believes that the carrying amounts of its intangible assets are recoverable. However, if adverse events were to occur or circumstances were to change indicating that the carrying amount of such assets may not be fully recoverable, the assets would be reviewed for impairment and the assets may be impaired.

Accrued_Insurance_Claims

Accrued Insurance Claims	3 Months Ended
	Oct. 26, 2013
Accrued Insurance Claims [Abstract]	'
Accrued Insurance Claims	'
	Accrued Insurance Claims
	The Company retains the risk of loss, up to certain limits, for claims relating to automobile liability, general liability, workers’ compensation, employee group health, and locate damages. With respect to losses occurring in fiscal 2014, the Company retains the risk of loss up to $1.0 million on a per occurrence basis for automobile liability, general liability and workers’ compensation. These retention amounts are applicable to all of the states in which the Company operates, except with respect to workers’ compensation insurance in three states in which the Company participates in a state-sponsored insurance fund. Aggregate stop loss coverage for automobile liability, general liability and workers’ compensation claims is $56.3 million for fiscal 2014. The risk of loss for insured claims of the Acquired Subsidiaries outstanding, or incurred but not reported, as of the date of acquisition has been retained by Quanta Services, Inc.
	The Company is party to a stop-loss agreement for losses under its employee health plan. The Company retains the risk of loss, on an annual basis, of the first $250,000 of claims per participant. In addition, the Company retains the risk of loss for the first $550,000 of claim amounts that aggregate across all participants having claims that exceed $250,000.
	Accrued insurance claims consist of the following:
		October 26,		July 27,
		2013		2013
		(Dollars in thousands)
	Amounts expected to be paid within one year:
	Accrued auto, general liability and workers' compensation	$	20,824	$	19,328
	Accrued employee group health	3,596		3,710
	Accrued damage claims	7,108		6,031
		31,528		29,069
	Amounts expected to be paid beyond one year:
	Accrued auto, general liability and workers' compensation	27,877		25,245
	Accrued damage claims	2,237		2,005
		30,114		27,250
	Total accrued insurance claims	$	61,642	$	56,319

Other_Accrued_Liabilities

Other Accrued Liabilities	3 Months Ended
	Oct. 26, 2013
Payables and Accruals [Abstract]	'
Other Accrued Liabilities	'
	Other Accrued Liabilities
	Other accrued liabilities consist of the following:
		October 26,		July 27,
		2013		2013
		(Dollars in thousands)
	Accrued payroll and related taxes	$	20,616	$	19,940
	Accrued employee benefit and incentive plan costs	9,483		15,325
	Accrued construction costs	22,001		20,883
	Accrued interest and related bank fees	5,883		937
	Other current liabilities	21,470		14,106
	Total other accrued liabilities	$	79,453	$	71,191
	Other current liabilities within the above table includes income taxes payable of $9.1 million and $2.3 million as of October 26, 2013 and July 27, 2013, respectively.

Debt

Debt	3 Months Ended
	Oct. 26, 2013
Debt Disclosure [Abstract]	'
Debt	'
	Debt
	The Company’s outstanding indebtedness consists of the following:
		October 26,			July 27,
		2013			2013
		(Dollars in thousands)
	Borrowings on senior Credit Agreement (matures December 2017)	$	83,000		$	49,000
	Senior Credit Agreement Term Loan (matures December 2017)	120,313			121,875
	7.125% senior subordinated notes (matures January 2021)	277,500			277,500
	Long-term debt premium on 7.125% senior subordinated notes (amortizes to interest expense through January 2021)	3,516			3,607
		484,329			451,982
	Less: current portion	(8,594		)	(7,813		)
	Long-term debt	$	475,735		$	444,169
	Senior Subordinated Notes Due 2021
	On October 26, 2013 and July 27, 2013, Dycom Investments, Inc. (the "Issuer"), a wholly-owned subsidiary of the Company, had outstanding an aggregate principal amount of $277.5 million of 7.125% senior subordinated notes due 2021 that were issued under an indenture dated January 21, 2011 (the "Indenture"). In addition, a debt premium of $3.5 million and $3.6 million existed as of October 26, 2013 and July 27, 2013, respectively. The debt premium was recognized upon the December 2012 issuance of $90.0 million in aggregate principal amount of the 7.125% senior subordinated notes at 104.25% of the principal amount. The net proceeds of this $90.0 million issuance were used to repay a portion of the borrowings under the Company's credit facility. Holders of all $277.5 million aggregate principal amount of the 2021 Notes vote as one series under the Indenture.
	The 2021 Notes are guaranteed by Dycom and substantially all of the Company's subsidiaries. The Indenture contains covenants that limit, among other things, the ability of the Company and its subsidiaries to incur additional debt and issue preferred stock, make certain restricted payments, consummate specified asset sales, enter into transactions with affiliates, incur liens, impose restrictions on the ability of the Company's subsidiaries to pay dividends or make payments to the Company and its restricted subsidiaries, merge or consolidate with another person, and dispose of all or substantially all of its assets.
	The Company determined that the fair value of the 2021 Notes as of October 26, 2013 was approximately $293.8 million, based on quoted market prices, compared to a $281.0 million carrying value (including the debt premium of $3.5 million). As of July 27, 2013, the fair value of the 2021 Notes was $292.4 million compared to a carrying value of $281.1 million (including the debt premium of $3.6 million).
	Senior Credit Agreement
	Dycom Industries, Inc. and certain of its subsidiaries are party to a credit agreement with various lenders (the "Credit Agreement") which matures in December 2017. The Credit Agreement provides for a $125 million term loan (the "Term Loan") and a $275 million revolving facility. The Credit Agreement contains a sublimit of $150 million for the issuance of letters of credit. Subject to certain conditions, the Credit Agreement provides for the ability to enter into one or more incremental facilities, either by increasing the revolving commitments under the Credit Agreement and/or in the form of term loans, in an aggregate amount not to exceed $100 million. Borrowings under the Credit Agreement are guaranteed by substantially all of Dycom's subsidiaries and secured by the stock of each wholly-owned, domestic subsidiary (subject to specified exceptions) and can be used to refinance certain indebtedness, to provide general working capital, and for other general corporate purposes.
	The Company had outstanding borrowings under the Credit Agreement of $83.0 million and $49.0 million as of October 26, 2013 and July 27, 2013, respectively. Borrowings under the Credit Agreement accrued interest at a weighted average rate of approximately 2.38% per annum and 2.19% per annum as of October 26, 2013 and July 27, 2013, respectively. As of October 26, 2013 and July 27, 2013, the Company had $120.3 million and $121.9 million, respectively, of outstanding principal amount under the Term Loan, which accrued interest at 2.17% and 2.19% per annum, respectively. The Term Loan is subject to principal amortization payable in equal quarterly installments.
	Standby letters of credit of approximately $49.7 million and $46.7 million were outstanding under the Credit Agreement as of October 26, 2013 and July 27, 2013, respectively. The outstanding letters of credit are issued as part of the Company's insurance program. Interest on outstanding standby letters of credit accrued at 2.0% per annum at both October 26, 2013 and July 27, 2013, respectively. Unutilized commitments were at rates per annum of 0.35% at both October 26, 2013 and July 27, 2013.
	At October 26, 2013 and July 27, 2013, the Company was in compliance with the financial covenants of the Credit Agreement and had additional borrowing availability of $142.3 million and $179.3 million, respectively, as determined by the most restrictive covenants of the Credit Agreement.

Income_Taxes

Income Taxes	3 Months Ended
	Oct. 26, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income Taxes
	The Company accounts for income taxes under the asset and liability method. This approach recognizes deferred tax assets and liabilities for the expected future tax consequences of temporary differences between the tax basis of assets and liabilities and their carrying amounts in the financial statements. The Company’s effective income tax rate differs from the statutory rate for the tax jurisdictions in which it operates primarily as the result of the impact of non-deductible and non-taxable items and tax credits recognized in relation to pre-tax results. Measurement of certain aspects of the Company’s tax positions are based on interpretations of tax regulations, federal and state case law and applicable statutes.
	The Company files income tax returns in the U.S. federal jurisdiction, multiple state jurisdictions and in Canada. With limited exceptions, the Company is no longer subject to U.S. federal and most state and local income tax examinations for fiscal years ended 2009 and prior. The Company believes its provision for income taxes is adequate; however, any assessment would affect the Company’s results of operations and cash flows.
	At both October 26, 2013 and July 27, 2013, the Company had total unrecognized tax benefits of $2.3 million which would reduce the Company’s effective tax rate during future periods if it is subsequently determined that those liabilities were not required. The Company had approximately $0.8 million accrued for the payment of interest and penalties at both October 26, 2013 and July 27, 2013. The Company recognizes interest related to unrecognized tax benefits in interest expense and penalties in general and administrative expenses. Interest expense related to unrecognized tax benefits was immaterial for the three months ended October 26, 2013 and October 27, 2012.

Other_Income_Net

Other Income, Net	3 Months Ended
	Oct. 26, 2013
Other Income and Expenses [Abstract]	'
Other Income, Net	'
	Other Income, Net
	The components of other income, net, are as follows:
		For the Three Months Ended
		26-Oct-13		27-Oct-12
		(Dollars in thousands)
	Gain on sale of fixed assets	$	1,865	$	1,581
	Miscellaneous income, net	147		33
	Total other income, net	$	2,012	$	1,614

Employee_Benefit_Plans

Employee Benefit Plans	3 Months Ended
	Oct. 26, 2013
Compensation and Retirement Disclosure [Abstract]	'
Employee Benefit Plans	'
	Multi-Employer Benefit Plans
	Certain of the Company's subsidiaries, including certain of the Acquired Subsidiaries, participate in multi-employer benefit pension plans under the terms of collective-bargaining agreements. The Company's contributions were $0.8 million and $0.7 million during the three months ended October 26, 2013 and October 27, 2012, respectively. The increase in contributions during the three months ended October 26, 2013 is related to contributions from the Acquired Subsidiaries. The risks of participating in a multi-employer defined benefit pension plan are different from single-employer plans in the following aspects: (a) assets contributed to the multi-employer plan by one employer may be used to provide benefits to employees of any other participating employers; (b) if a participating employer stops contributing to the plan, the unfunded obligations of the plan may become obligations of the remaining participating employers; and (c) if the Company chooses to stop participating in the multi-employer plan, the Company may be required to pay the plan an amount based on the underfunded status of the plan, referred to as a withdrawal liability. The Company has not incurred withdrawal liabilities related to the plans as of October 26, 2013 or July 27, 2013.

Capital_Stock

Capital Stock	3 Months Ended
	Oct. 26, 2013
Stockholders' Equity Note [Abstract]	'
Capital Stock	'
	Capital Stock
	On August 27, 2013, the Board of Directors authorized $40.0 million to repurchase shares of the Company's outstanding common stock over the subsequent eighteen months in open market or private transactions. No shares were repurchased during the first quarter of fiscal 2014. As of October 26, 2013, the full $40.0 million authorization remained available for repurchases through February 2015. Pursuant to a previous repurchase authorization, the Company made the following repurchases:
	Three Months Ended	Number of Shares Repurchased	Total Consideration		Average Price Per Share
			(Dollars in thousands)
	Fiscal 2012	597,700	$	12,960	$	21.68
	Fiscal 2013	1,047,000	$	15,203	$	14.52
	All shares repurchased have been canceled.

StockBased_Awards

Stock-Based Awards	3 Months Ended
	Oct. 26, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Stock-Based Awards	'
	Stock-Based Awards
	The Company has certain stock-based compensation plans which provide for the grants of equity awards, including stock options, restricted shares, performance shares, restricted share units, performance share units, and stock appreciation rights.
	Compensation expense for stock-based awards is based on the fair value at the measurement date and is included in general and administrative expenses in the condensed consolidated statements of operations. Stock-based compensation expense and the related tax benefit recognized related to stock options and restricted share units during the three months ended October 26, 2013 and October 27, 2012 were as follows:
		For the Three Months Ended
		26-Oct-13			27-Oct-12
		(Dollars in thousands)
	Stock-based compensation	$	3,506		$	2,266
	Tax benefit recognized in the statement of operations	$	1,299		$	765
	Compensation expense previously recognized with respect to performance share units will be reversed to the extent that performance goals are not met. As of October 26, 2013, unrecognized compensation expense related to stock options, time-based restricted share units ("RSUs") and target performance share units ("Performance RSUs") was $4.3 million, $6.1 million and $7.9 million, respectively. This expense will be recognized over a weighted-average period of 1.9 years, 2.9 years and 1.5 years, respectively, which is based on the average remaining service periods of the awards. As of October 26, 2013, the Company may recognize an additional $8.2 million in compensation expense related to Performance RSUs if the maximum amount of restricted share units are earned based on certain performance goals being met.
	Stock Options - The following table summarizes stock option award activity during the three months ended October 26, 2013:
		Stock Options
		Shares		Weighted Average Exercise Price
	Outstanding as of July 27, 2013	2,769,132		$	18.27
	Options exercised	(454,216	)	$	22.29
	Outstanding as of October 26, 2013	2,314,916		$	17.48
	Exercisable options as of October 26, 2013	1,424,099		$	19.7
	RSUs and Performance RSUs - The following table summarizes RSU and Performance RSU activity during the three months ended October 26, 2013:
		Restricted Stock
		RSUs					Performance RSUs
		Share Units		Weighted Average Grant Price			Share Units		Weighted Average Grant Price
	Outstanding as of July 27, 2013	463,318		$	17.78		1,315,138		$	18.44
	Granted	1,035		$	25.99		65,154		$	30.55
	Share units vested	(1,035	)	$	25.99		(43,979	)	$	14.75
	Forfeited or canceled	—		$	—		(265,461	)	$	18.36
	Outstanding as of October 26, 2013	463,318		$	17.78		1,070,852		$	19.35
	The granted Performance RSUs in the above table is comprised of 32,577 target shares and 32,577 supplemental shares. Approximately 265,000 Performance RSUs outstanding as of July 27, 2013 were canceled during the three months ended October 26, 2013 as a result of the fiscal 2013 performance criteria for attaining supplemental shares not being met. The total amount of Performance RSUs outstanding as of October 26, 2013 is comprised of 646,167 target shares and 424,685 supplemental shares.

Related_Party_Transactions

Related Party Transactions	3 Months Ended
	Oct. 26, 2013
Related Party Transactions [Abstract]	'
Related Party Transactions	'
	Related Party Transactions
	The Company leases administrative offices from entities related to officers of certain of the Company’s subsidiaries. The total expense under these arrangements for the three months ended October 26, 2013 and October 27, 2012 was $0.6 million and $0.3 million, respectively. Amounts paid for subcontracting services to entities related to officers of certain of the Company’s subsidiaries were immaterial during the three months ended October 26, 2013 and October 27, 2012.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Oct. 26, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	Commitments and Contingencies
	In October 2012, a former employee of UtiliQuest, LLC ("UtiliQuest"), a wholly-owned subsidiary of the Company, commenced a lawsuit against UtiliQuest in the Superior Court of California. The lawsuit alleges that UtiliQuest violated the California Labor Code, the California Business & Professions Code and the Labor Code Private Attorneys General Act of 2004 by failing to pay for all hours worked (including overtime) and failing to provide meal breaks and accurate wage statements. The plaintiff seeks unspecified damages and other relief on behalf of himself and a putative class of current and former employees of UtiliQuest who worked as locators in the State of California in the four years preceding the filing date of the lawsuit. In January 2013, UtiliQuest removed the case to the United States District Court for the Northern District of California and the plaintiff subsequently filed a Motion to Remand the case back to the California Superior Court. In April 2013, the parties exchanged initial disclosures and in July 2013, the District Court granted plaintiff's Motion to Remand. UtiliQuest filed its second removal of the case to the District Court in October 2013, and plaintiff is again seeking remand back to state court. UtiliQuest also filed a Motion for Summary Judgment in October 2013, the decision on which has been stayed by the District Court until it rules on plaintiff’s Motion to Remand. It is too early to evaluate the likelihood of an outcome to this matter or estimate the amount or range of potential loss, if any. The Company intends to vigorously defend itself against this lawsuit.
	From time to time, the Company and its subsidiaries are parties to various other claims and legal proceedings. It is the opinion of management, based on information available at this time, that such other pending claims or proceedings will not have a material effect on its financial statements.
	As part of the Company's insurance program, it retains the risk of loss, up to certain limits, for claims related to automobile liability, general liability, workers' compensation, employee group health, and locate damages, and the Company has established reserves that it believes to be adequate based on current evaluations and experience with these types of claims. For these claims, the effect on the Company's financial statements is generally limited to the amount needed to satisfy insurance deductibles or retentions.
	Performance Bonds and Guarantees
	The Company has obligations under performance and other surety contract bonds related to certain of its customer contracts. Performance bonds generally provide the Company’s customer with the right to obtain payment and/or performance from the issuer of the bond if the Company fails to perform its contractual obligations. As of October 26, 2013 and July 27, 2013, the Company had $435.3 million and $446.5 million of outstanding performance and other surety contract bonds, respectively. No events have occurred in which the customers have exercised their rights under the bonds.
	The Company has periodically guaranteed certain obligations of its subsidiaries, including obligations in connection with obtaining state contractor licenses and leasing real property and equipment.
	Letters of Credit
	The Company has standby letters of credit issued under its Credit Agreement as part of its insurance program. These standby letters of credit collateralize the Company’s obligations to its insurance carriers in connection with the settlement of potential claims. As of October 26, 2013 and July 27, 2013, the Company had $49.7 million and $46.7 million, respectively, of outstanding standby letters of credit issued under the Credit Agreement.

Concentration_of_Credit_Risk

Concentration of Credit Risk	3 Months Ended
	Oct. 26, 2013
Risks and Uncertainties [Abstract]	'
Concentration of Credit Risk	'
	Concentration of Credit Risk
	The Company’s customer base is highly concentrated, with its top five customers in each of the three months ended October 26, 2013 and October 27, 2012, accounting for approximately 57.2% and 59.6% of its total revenues, respectively. Revenues from four of the top five customers exceeded 10% of total revenue during the three months ended October 26, 2013 or October 27, 2012:
		For the Three Months Ended
		October 26, 2013		October 27, 2012
	AT&T Inc. ("AT&T")	17.50%		13.50%
	CenturyLink, Inc. ("CenturyLink")	15.50%		13.70%
	Comcast Corporation ("Comcast")	10.50%		12.70%
	Verizon Communications, Inc. ("Verizon")	8.40%		10.20%
	The Company believes that none of its significant customers was experiencing financial difficulties that would materially impact the collectability of the Company’s trade accounts receivable and costs in excess of billings as of October 26, 2013. Customers representing 10% or more of combined amounts of trade accounts receivable and costs and estimated earnings in excess of billings as of October 26, 2013 or July 27, 2013 had the following outstanding balances and the related percentage of the Company’s total outstanding balances:
		October 26, 2013					July 27, 2013
		Amount			% of Total		Amount		% of Total
					(Dollars in millions)
	AT&T	$	69		13.1	%	$	57.4	12.6	%
	CenturyLink	$	66.5		12.6	%	$	62.6	13.7	%
	Verizon	$	54.8		10.4	%	$	33.4	7.3	%
	Windstream Corporation	$	51.4		9.8	%	$	59.4	13	%

Supplemental_Consolidating_Fin

Supplemental Consolidating Financial Statements	3 Months Ended
	Oct. 26, 2013
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'
Condensed Financial Information of Parent Company Only Disclosure	'
	Supplemental Consolidating Financial Statements
	As of October 26, 2013 and July 27, 2013, the outstanding aggregate principal amount of the 2021 Notes was $277.5 million. The 2021 Notes were issued by Dycom Investments, Inc., a wholly-owned subsidiary of the Company. The following consolidating financial statements present, in separate columns, financial information for (i) Dycom Industries, Inc. ("Parent") on a parent only basis, (ii) Dycom Investments, Inc. (the "Issuer"), (iii) the guarantor subsidiaries for the 2021 Notes on a combined basis, (iv) other non-guarantor subsidiaries on a combined basis, (v) the eliminations and reclassifications necessary to arrive at the information for the Company on a consolidated basis, and (vi) the Company on a consolidated basis. The consolidating financial statements are presented in accordance with the equity method. Under this method, the investments in subsidiaries are recorded at cost and adjusted for the Company’s share of subsidiaries’ cumulative results of operations, capital contributions, distributions and other equity changes. Intercompany charges (income) between the Parent and subsidiaries are recognized in the consolidating financial statements during the period incurred and the settlement of intercompany balances is reflected in the consolidating statement of cash flows based on the nature of the underlying transactions.
	Each guarantor and non-guarantor subsidiary is wholly-owned, directly or indirectly, by the Issuer and the Parent. The Notes are fully and unconditionally guaranteed on a joint and several basis by each guarantor subsidiary and Parent. There are no contractual restrictions limiting transfers of cash from guarantor and non-guarantor subsidiaries to Issuer or Parent, within the meaning of Rule 3-10 of Regulation S-X.
	DYCOM INDUSTRIES, INC. AND SUBSIDIARIES
	CONDENSED CONSOLIDATED BALANCE SHEET (UNAUDITED)
	26-Oct-13
		Parent			Issuer			Subsidiary Guarantors			Non- Guarantor Subsidiaries			Eliminations and Reclassifications			Dycom Consolidated
		(Dollars in thousands)
	ASSETS
	CURRENT ASSETS:
	Cash and equivalents	$	—		$	—		$	13,631		$	763		$	—		$	14,394
	Accounts receivable, net	—			—			303,178			1,234			—			304,412
	Costs and estimated earnings in excess of billings	—			—			218,997			2,113			—			221,110
	Inventories	—			—			39,273			—			—			39,273
	Deferred tax assets, net	2,434			—			16,573			96			(1,385		)	17,718
	Income taxes receivable	2,231			—			—			—			—			2,231
	Other current assets	8,446			55			7,189			502			—			16,192
	Total current assets	13,111			55			598,841			4,708			(1,385		)	615,330
	PROPERTY AND EQUIPMENT, NET	14,666			—			173,353			15,897			—			203,916
	GOODWILL	—			—			267,810			—			—			267,810
	INTANGIBLE ASSETS, NET	—			—			120,021			—			—			120,021
	DEFERRED TAX ASSETS, NET NON-CURRENT	84			—			4,224			162			(4,470		)	—
	INVESTMENT IN SUBSIDIARIES	788,300			1,494,353			—			—			(2,282,653		)	—
	INTERCOMPANY RECEIVABLES	—			—			571,013			—			(571,013		)	—
	OTHER	8,883			6,153			2,073			90			—			17,199
	TOTAL NON-CURRENT ASSETS	811,933			1,500,506			1,138,494			16,149			(2,858,136		)	608,946
	TOTAL ASSETS	$	825,044		$	1,500,561		$	1,737,335		$	20,857		$	(2,859,521	)	$	1,224,276
	LIABILITIES AND STOCKHOLDERS' EQUITY
	CURRENT LIABILITIES:
	Accounts payable	$	3,639		$	—		$	64,623		$	664		$	—		$	68,926
	Current portion of debt	8,594			—			—			—			—			8,594
	Billings in excess of costs and estimated earnings	—			—			13,347			—			—			13,347
	Accrued insurance claims	618			—			30,829			81			—			31,528
	Deferred tax liabilities	—			155			89			1,141			(1,385		)	—
	Other accrued liabilities	15,986			5,560			56,596			1,311			—			79,453
	Total current liabilities	28,837			5,715			165,484			3,197			(1,385		)	201,848
	LONG-TERM DEBT	194,719			281,016			—			—			—			475,735
	ACCRUED INSURANCE CLAIMS	738			—			29,290			86			—			30,114
	DEFERRED TAX LIABILITIES, NET NON-CURRENT	—			427			53,119			527			(4,470		)	49,603
	INTERCOMPANY PAYABLES	136,610			425,103			—			9,300			(571,013		)	—
	OTHER LIABILITIES	3,156			—			2,832			4			—			5,992
	Total liabilities	364,060			712,261			250,725			13,114			(576,868		)	763,292
	Total stockholders' equity	460,984			788,300			1,486,610			7,743			(2,282,653		)	460,984
	TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$	825,044		$	1,500,561		$	1,737,335		$	20,857		$	(2,859,521	)	$	1,224,276
	DYCOM INDUSTRIES, INC. AND SUBSIDIARIES
	CONDENSED CONSOLIDATED BALANCE SHEET
	27-Jul-13
		Parent			Issuer			Subsidiary Guarantors			Non- Guarantor Subsidiaries			Eliminations and Reclassifications			Dycom Consolidated
		(Dollars in thousands)
	ASSETS
	CURRENT ASSETS:
	Cash and equivalents	$	—		$	—		$	18,166		$	441		$	—		$	18,607
	Accounts receivable, net	—			—			249,533			2,669			—			252,202
	Costs and estimated earnings in excess of billings	—			—			202,651			1,698			—			204,349
	Inventories	—			—			35,999			—			—			35,999
	Deferred tax assets, net	2,285			—			15,873			121			(1,426		)	16,853
	Income taxes receivable	2,516			—			—			—			—			2,516
	Other current assets	2,563			10			7,583			452			—			10,608
	Total current assets	7,364			10			529,805			5,381			(1,426		)	541,134
	PROPERTY AND EQUIPMENT, NET	13,779			—			173,254			15,670			—			202,703
	GOODWILL	—			—			267,810			—			—			267,810
	INTANGIBLE ASSETS, NET	—			—			125,275			—			—			125,275
	DEFERRED TAX ASSETS, NET NON-CURRENT	691			—			4,104			66			(4,861		)	—
INVESTMENT IN SUBSIDIARIES	769,639			1,472,559			—			—			(2,242,198		)	—
INTERCOMPANY RECEIVABLES	—			—			618,524			—			(618,524		)	—
OTHER	8,739			6,331			2,133			83			—			17,286
TOTAL NON-CURRENT ASSETS	792,848			1,478,890			1,191,100			15,819			(2,865,583		)	613,074
TOTAL ASSETS	$	800,212		$	1,478,900		$	1,720,905		$	21,200		$	(2,867,009	)	$	1,154,208
LIABILITIES AND STOCKHOLDERS' EQUITY
CURRENT LIABILITIES:
Accounts payable	$	2,042		$	—		$	75,012		$	900		$	—		$	77,954
Current portion of debt	7,813			—			—			—			—			7,813
Billings in excess of costs and estimated earnings	—			—			13,788			—			—			13,788
Accrued insurance claims	619			—			28,342			108			—			29,069
Deferred tax liabilities	—			155			140			1,131			(1,426		)	—
Other accrued liabilities	9,151			1,321			59,374			1,345			—			71,191
Total current liabilities	19,625			1,476			176,656			3,484			(1,426		)	199,815
LONG-TERM DEBT	163,062			281,107			—			—			—			444,169
ACCRUED INSURANCE CLAIMS	726			—			26,426			98			—			27,250
DEFERRED TAX LIABILITIES, NET NON-CURRENT	—			427			52,436			610			(4,861		)	48,612
INTERCOMPANY PAYABLES	185,296			426,251			—			6,977			(618,524		)	—
OTHER LIABILITIES	3,142			—			2,855			4			—			6,001
Total liabilities	371,851			709,261			258,373			11,173			(624,811		)	725,847
Total stockholders' equity	428,361			769,639			1,462,532			10,027			(2,242,198		)	428,361
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$	800,212		$	1,478,900		$	1,720,905		$	21,200		$	(2,867,009	)	$	1,154,208
DYCOM INDUSTRIES, INC. AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS (UNAUDITED)
FOR THE THREE MONTHS ENDED OCTOBER 26, 2013
	Parent			Issuer			Subsidiary Guarantors			Non- Guarantor Subsidiaries			Eliminations and Reclassifications			Dycom Consolidated
	(Dollars in thousands)
REVENUES:
Contract revenues	$	—		$	—		$	509,430		$	3,290		$	—		$	512,720
EXPENSES:
Costs of earned revenues, excluding depreciation and amortization	—			—			407,695			2,424			—			410,119
General and administrative	11,237			226			28,945			2,667			—			43,075
Depreciation and amortization	854			—			21,621			1,077			—			23,552
Intercompany charges (income), net	(13,976		)	—			14,110			(134		)	—			—
Total	(1,885		)	226			472,371			6,034			—			476,746
Interest expense, net	(1,888		)	(4,994		)	(4		)	—			—			(6,886		)
Other income, net	3			—			1,945			64			—			2,012
INCOME (LOSS) BEFORE INCOME TAXES AND EQUITY IN EARNINGS OF SUBSIDIARIES	—			(5,220		)	39,000			(2,680		)	—			31,100
PROVISION (BENEFIT) FOR INCOME TAXES	—			(2,087		)	15,600			(1,073		)	—			12,440
NET INCOME (LOSS) BEFORE EQUITY IN EARNINGS OF SUBSIDIARIES	—			(3,133		)	23,400			(1,607		)	—			18,660
EQUITY IN EARNINGS OF SUBSIDIARIES	18,660			21,793			—			—			(40,453		)	—
NET INCOME (LOSS)	$	18,660		$	18,660		$	23,400		$	(1,607	)	$	(40,453	)	$	18,660
Foreign currency translation loss	(60		)	(60		)	—			(60		)	120			(60		)
COMPREHENSIVE INCOME (LOSS)	$	18,600		$	18,600		$	23,400		$	(1,667	)	$	(40,333	)	$	18,600
DYCOM INDUSTRIES, INC. AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS (UNAUDITED)
FOR THE THREE MONTHS ENDED OCTOBER 27, 2012
	Parent			Issuer			Subsidiary Guarantors			Non-Guarantor Subsidiaries			Eliminations and Reclassifications			Dycom Consolidated
	(Dollars in thousands)
REVENUES:
Contract revenues	$	—		$	—		$	319,025		$	4,261		$	—		$	323,286
EXPENSES:
Costs of earned revenues, excluding depreciation and amortization	—			—			253,544			3,522			—			257,066
General and administrative	8,409			146			17,616			2,653			—			28,824
Depreciation and amortization	740			—			13,286			1,285			—			15,311
Intercompany charges (income), net	(9,925		)	—			10,272			(347		)	—			—
Total	(776		)	146			294,718			7,113			—			301,201
Interest income (expense), net	(776		)	(3,420		)	(1		)	—			—			(4,197		)
Other income, net	—			—			1,565			49			—			1,614
INCOME (LOSS) BEFORE INCOME TAXES AND EQUITY IN EARNINGS OF SUBSIDIARIES	—			(3,566		)	25,871			(2,803		)	—			19,502
PROVISION (BENEFIT) FOR INCOME TAXES	—			(1,397		)	10,136			(1,098		)	—			7,641
NET INCOME (LOSS) BEFORE EQUITY IN EARNINGS OF SUBSIDIARIES	—			(2,169		)	15,735			(1,705		)	—			11,861
EQUITY IN EARNINGS OF SUBSIDIARIES	11,861			14,030			—			—			(25,891		)	—
NET INCOME (LOSS)	$	11,861		$	11,861		$	15,735		$	(1,705	)	$	(25,891	)	$	11,861
Foreign currency translation gain	2			2			—			2			(4		)	2
COMPREHENSIVE INCOME (LOSS)	$	11,863		$	11,863		$	15,735		$	(1,703	)	$	(25,895	)	$	11,863
DYCOM INDUSTRIES, INC. AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS (UNAUDITED)
FOR THE THREE MONTHS ENDED OCTOBER 26, 2013
	Parent			Issuer			Subsidiary Guarantors			Non- Guarantor Subsidiaries			Eliminations and Reclassifications			Dycom Consolidated
	(Dollars in thousands)
Net cash (used in) provided by operating activities	$	(2,905	)	$	1,835		$	(17,351	)	$	(272	)	$	—		$	(18,693	)
Cash flows from investing activities:
Capital expenditures	(1,680		)	—			(27,042		)	(1,566		)	—			(30,288		)
Proceeds from sale of assets	—			—			2,422			43			—			2,465
Changes in restricted cash	(305		)	—			—			—			—			(305		)
Net cash (used in) investing activities	(1,985		)	—			(24,620		)	(1,523		)	—			(28,128		)
Cash flows from financing activities:
Proceeds from borrowings on senior Credit Agreement	164,000			—			—			—			—			164,000
Principal payments on senior Credit Agreement, including Term Loan	(131,563		)	—			—			—			—			(131,563		)
Exercise of stock options	10,124			—			—			—			—			10,124
Restricted stock tax withholdings	(609		)	—			—			—			—			(609		)
Excess tax benefit from share-based awards	656			—			—			—			—			656
Intercompany funding	(37,718		)	(1,835		)	37,436			2,117			—			—
Net cash provided by (used in) financing activities	4,890			(1,835		)	37,436			2,117			—			42,608
Net (decrease) increase in cash and equivalents	—			—			(4,535		)	322			—			(4,213		)
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	—			—			18,166			441			—			18,607
CASH AND EQUIVALENTS AT END OF PERIOD	$	—		$	—		$	13,631		$	763		$	—		$	14,394
DYCOM INDUSTRIES, INC. AND SUBSIDIARIES
CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS (UNAUDITED)
FOR THE THREE MONTHS ENDED OCTOBER 27, 2012
	Parent			Issuer			Subsidiary Guarantors			Non- Guarantor Subsidiaries			Eliminations and Reclassifications			Dycom Consolidated
	(Dollars in thousands)
Net cash provided by (used in) operating activities	$	(2,961	)	$	1,260		$	30,527		$	(1,110	)	$	—		$	27,716
Cash flows from investing activities:
Capital expenditures	(2,026		)	—			(9,196		)	(1,301		)	—			(12,523		)
Proceeds from sale of assets	—			—			1,958			48			—			2,006
Net cash used in investing activities	(2,026		)	—			(7,238		)	(1,253		)	—			(10,517		)
Cash flows from financing activities:
Repurchases of common stock	(15,203		)	—			—			—			—			(15,203		)
Exercise of stock options and other	166			—			—			—			—			166
Restricted stock tax withholdings	(62		)	—			—			—			—			(62		)
Excess tax benefit from share-based awards	64			—			—			—			—			64
Principal payments on capital lease obligations	—			—			(19		)	—			—			(19		)
Intercompany funding	20,022			(1,260		)	(20,737		)	1,975			—			—
Net cash provided by (used in) financing activities	4,987			(1,260		)	(20,756		)	1,975			—			(15,054		)
Net increase (decrease) in cash and equivalents	—			—			2,533			(388		)	—			2,145
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	—			—			51,563			1,018			—			52,581
CASH AND EQUIVALENTS AT END OF PERIOD	$	—		$	—		$	54,096		$	630		$	—		$	54,726

Basis_of_Presentation_and_Acco1

Basis of Presentation and Accounting Policies (Policies)	3 Months Ended
	Oct. 26, 2013
Accounting Policies [Abstract]	'
Basis of Presentation	'
	Basis of Presentation - Dycom Industries, Inc. ("Dycom" or the "Company") is a leading provider of specialty contracting services throughout the United States and in Canada. These services include engineering, construction, maintenance and installation services to telecommunications providers, underground facility locating services to various utilities, including telecommunications providers, and other construction and maintenance services to electric and gas utilities and others.
	The accompanying unaudited condensed consolidated financial statements of Dycom and its subsidiaries, all of which are wholly-owned, have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X of the Securities and Exchange Commission (“SEC”). Accordingly, they do not include all of the information and notes required by GAAP for complete financial statements. The condensed consolidated financial statements and accompanying notes reflect all adjustments, consisting of only normal recurring accruals that are, in the opinion of management, necessary for a fair presentation of such statements. The results of operations for the three months ended October 26, 2013 are not necessarily indicative of the results expected for the full year or for any future period. The information included in these condensed consolidated financial statements should be read in conjunction with Management’s Discussion and Analysis of Financial Condition and Results of Operations contained in this report and the Company's audited financial statements for the year ended July 27, 2013 included in the Company's 2013 Annual Report on Form 10-K, filed with the SEC on September 13, 2013.
	The condensed consolidated financial statements of the Company include the accounts of its wholly-owned subsidiaries. All significant transactions and balances between the Company and its subsidiaries have been eliminated in consolidation.
	All of the Company's operating segments have been aggregated into one reporting segment due to their similar economic characteristics, customers, service distribution methods, and the nature of their services and production processes. The Company's services are provided by its various subsidiaries throughout the United States and in Canada. Revenues from services provided in Canada were approximately $3.3 million and $3.9 million during the three months ended October 26, 2013 and October 27, 2012, respectively. The Company had no material long-lived assets in the Canadian operations at October 26, 2013 or July 27, 2013.
Business Combinations	'
	Acquisitions - On December 3, 2012, the Company acquired substantially all of the telecommunications infrastructure services subsidiaries of Quanta Services, Inc. Additionally, during the fourth quarter of fiscal 2013, the Company acquired Sage Telecommunications Corp of Colorado, LLC (“Sage”) and certain assets of a tower construction and maintenance company. The results of operations of the businesses acquired are included in the accompanying condensed consolidated financial statements from their dates of acquisition.
Accounting Period	'
	Accounting Period - The Company uses a fiscal year ending on the last Saturday in July.
Use of Estimates	'
	Use of Estimates - The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. For the Company, key estimates include: recognition of revenue for costs and estimated earnings in excess of billings, accrued insurance claims, provision for income taxes, accruals for legal matters and other contingencies, the fair value of reporting units for goodwill impairment analysis, the assessment of impairment of intangibles and other long-lived assets, preliminary purchase price allocations of businesses acquired, stock-based compensation expense for performance-based stock awards, asset lives used in computing depreciation and amortization, and allowance for doubtful accounts. At the time they are made, the Company believes that such estimates are fair when considered in conjunction with the consolidated financial position and results of operations taken as a whole. However, actual results could differ from those estimates and such differences may be material to the financial statements.
Restricted Cash	'
	Restricted Cash - As of October 26, 2013 and July 27, 2013, the Company had approximately $4.0 million and $3.7 million, respectively, in restricted cash which is held as collateral in support of the Company's insurance obligations. Restricted cash is included in other current assets and other assets in the condensed consolidated balance sheets and changes in restricted cash are reported in cash flows used in investing activities in the condensed consolidated statements of cash flows.
Fair Value of Financial Instruments	'
	Fair Value of Financial Instruments - ASC Topic 820, Fair Value Measurements and Disclosures ("ASC Topic 820") defines and establishes a measurement framework for fair value and expands disclosure requirements. ASC Topic 820 requires that assets and liabilities carried at fair value are classified and disclosed in one of the following three categories: (1) Level 1 - Quoted market prices in active markets for identical assets or liabilities; (2) Level 2 - Observable market-based inputs or unobservable inputs that are corroborated by market data; and (3) Level 3 - Unobservable inputs not corroborated by market data which require the reporting entity's own assumptions. The Company's financial instruments consist primarily of cash and equivalents, restricted cash, accounts receivables, income taxes receivable and payable, accounts payable and certain accrued expenses, and long-term debt. The carrying amounts of these items approximate fair value due to their short maturity, except for the Company's outstanding 7.125% senior subordinated notes due 2021 (the "2021 Notes") which are categorized as Level 2 as of October 26, 2013 and July 27, 2013, based on observable market-based inputs. See Note 10, Debt, for further information regarding the fair value of the 2021 Notes. The Company's cash and equivalents are categorized as Level 1 as of October 26, 2013 and July 27, 2013, based on quoted market prices in active markets for identical assets. During the three months ended October 26, 2013 and October 27, 2012, the Company had no non-recurring fair value measurements of assets or liabilities subsequent to their initial recognition.

Computation_of_Earnings_Per_Co1

Computation of Earnings Per Common Share (Tables)	3 Months Ended
	Oct. 26, 2013
Earnings Per Share [Abstract]	'
Schedule of Earnings Per Share Reconciliation	'
	The following is a reconciliation of the numerator and denominator of the basic and diluted earnings per common share computation as required by ASC Topic 260, Earnings Per Share.
		For the Three Months Ended
		October 26, 2013		October 27, 2012
		(Dollars in thousands, except per share amounts)
	Net income available to common stockholders (numerator)	$	18,660	$	11,861
	Weighted-average number of common shares (denominator)	33,423,678		33,089,959
	Basic earnings per common share	$	0.56	$	0.36
	Weighted-average number of common shares	33,423,678		33,089,959
	Potential common stock arising from stock options, and unvested restricted share units	1,215,320		631,111
	Total shares-diluted (denominator)	34,638,998		33,721,070
	Diluted earnings per common share	$	0.54	$	0.35
	Anti-dilutive weighted shares excluded from the calculation of earnings per share	547,154		1,940,101

Acquisitions_Tables

Acquisitions (Tables)	3 Months Ended
	Oct. 26, 2013
Business Combinations [Abstract]	'
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	'
	The purchase price of the Acquired Subsidiaries is allocated as follows and reflects the elimination of intercompany balances (dollars in millions):
	Assets
	Cash and equivalents	$	0.2
	Accounts receivable, net	112.2
	Costs and estimated earnings in excess of billings	61.5
	Inventories	9
	Other current assets	1.6
	Property and equipment	33.3
	Goodwill	87.9
	Intangibles - customer relationships	70.3
	Intangibles - backlog	15.3
	Intangibles - trade names	5
	Other assets	2.3
	Total assets	398.6
	Liabilities
	Accounts payable	42.1
	Billings in excess of costs and estimated earnings	10.3
	Accrued and other liabilities	27.1
	Total liabilities	79.5
	Net Assets Acquired	$	319.1
Business Acquisition, Pro Forma Information	'
			For the Three Months Ended
			October 27, 2012
			(Dollars in thousands, except per share amounts)
	Pro forma contract revenues		$	499,666
	Pro forma income before income taxes		$	36,205
	Pro forma net income		$	22,019
	Pro forma earnings per share:
	Basic		$	0.67
	Diluted		$	0.65

Accounts_Receivable_Tables

Accounts Receivable (Tables)	3 Months Ended
	Oct. 26, 2013
Receivables [Abstract]	'
Schedule of Accounts Receivable	'
	Accounts receivable consists of the following:
		October 26,			July 27,
		2013			2013
		(Dollars in thousands)
	Contract billings	$	291,083		$	239,498
	Retainage and other receivables	13,601			12,833
	Total	304,684			252,331
	Less: allowance for doubtful accounts	(272		)	(129		)
	Accounts receivable, net	$	304,412		$	252,202

Costs_and_Estimated_Earnings_i1

Costs and Estimated Earnings in Excess of Billings (Tables)	3 Months Ended
	Oct. 26, 2013
Contractors [Abstract]	'
Costs and Estimated Earnings in Excess of Billings, Net	'
	Costs and estimated earnings in excess of billings, net, consists of the following:
		October 26,			July 27,
		2013			2013
		(Dollars in thousands)
	Costs incurred on contracts in progress	$	220,475		$	208,250
	Estimated to date earnings	53,473			49,150
	Total costs and estimated earnings	273,948			257,400
	Less: billings to date	(66,185		)	(66,839		)
		$	207,763		$	190,561
	Included in the accompanying condensed consolidated balance sheets under the captions:
	Costs and estimated earnings in excess of billings	$	221,110		$	204,349
	Billings in excess of costs and estimated earnings	(13,347		)	(13,788		)
		$	207,763		$	190,561

Property_and_Equipment_Tables

Property and Equipment (Tables)	3 Months Ended
	Oct. 26, 2013
Property, Plant and Equipment [Abstract]	'
Schedule of Property and Equipment	'
	Property and equipment consists of the following:
		General Useful Lives		October 26,				July 27,
				2013				2013
		(Years)		(Dollars in thousands)
	Land	—		$	3,479			$	3,479
	Buildings	Oct-35		11,511				11,449
	Leasehold improvements	15-Jan		5,273				5,154
	Vehicles	5-Jan		264,023				258,211
	Computer hardware and software	10-Mar		66,961				64,191
	Office furniture and equipment	7-Feb		8,155				7,915
	Equipment and machinery	10-Jan		176,344				171,742
	Total			535,746				522,141
	Less: accumulated depreciation			(331,830		)		(319,438		)
	Property and equipment, net			$	203,916			$	202,703
Schedule of Depreciation, Repairs, and Maintenance Expense	'
	Depreciation expense and repairs and maintenance were as follows:
		For the Three Months Ended
		October 26,				October 27,
		2013				2012
		(Dollars in thousands)
	Depreciation expense	$	18,401			$	13,720
	Repairs and maintenance expense	$	5,994			$	3,811

Goodwill_and_Intangible_Assets1

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,		July 27,
				2013		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

Accrued_Insurance_Claims_Table

Accrued Insurance Claims (Tables)	3 Months Ended
	Oct. 26, 2013
Accrued Insurance Claims [Abstract]	'
Schedule of Accrued Insurance Claims	'
	Accrued insurance claims consist of the following:
		October 26,		July 27,
		2013		2013
		(Dollars in thousands)
	Amounts expected to be paid within one year:
	Accrued auto, general liability and workers' compensation	$	20,824	$	19,328
	Accrued employee group health	3,596		3,710
	Accrued damage claims	7,108		6,031
		31,528		29,069
	Amounts expected to be paid beyond one year:
	Accrued auto, general liability and workers' compensation	27,877		25,245
	Accrued damage claims	2,237		2,005
		30,114		27,250
	Total accrued insurance claims	$	61,642	$	56,319

Other_Accrued_Liabilities_Tabl

Other Accrued Liabilities (Tables)	3 Months Ended
	Oct. 26, 2013
Payables and Accruals [Abstract]	'
Schedule of Other Accrued Liabilities	'
	Other accrued liabilities consist of the following:
		October 26,		July 27,
		2013		2013
		(Dollars in thousands)
	Accrued payroll and related taxes	$	20,616	$	19,940
	Accrued employee benefit and incentive plan costs	9,483		15,325
	Accrued construction costs	22,001		20,883
	Accrued interest and related bank fees	5,883		937
	Other current liabilities	21,470		14,106
	Total other accrued liabilities	$	79,453	$	71,191
	Other current liabilities within the above table includes income taxes payable of $9.1 million and $2.3 million as of October 26, 2013 and July 27, 2013, respectively.

Debt_Tables

Debt (Tables)	3 Months Ended
	Oct. 26, 2013
Debt Disclosure [Abstract]	'
Outstanding Indebtedness	'
	The Company’s outstanding indebtedness consists of the following:
		October 26,			July 27,
		2013			2013
		(Dollars in thousands)
	Borrowings on senior Credit Agreement (matures December 2017)	$	83,000		$	49,000
	Senior Credit Agreement Term Loan (matures December 2017)	120,313			121,875
	7.125% senior subordinated notes (matures January 2021)	277,500			277,500
	Long-term debt premium on 7.125% senior subordinated notes (amortizes to interest expense through January 2021)	3,516			3,607
		484,329			451,982
	Less: current portion	(8,594		)	(7,813		)
	Long-term debt	$	475,735		$	444,169

Other_Income_Net_Tables

Other Income, Net (Tables)	3 Months Ended
	Oct. 26, 2013
Other Income and Expenses [Abstract]	'
Schedule of Other Income, Net	'
	The components of other income, net, are as follows:
		For the Three Months Ended
		26-Oct-13		27-Oct-12
		(Dollars in thousands)
	Gain on sale of fixed assets	$	1,865	$	1,581
	Miscellaneous income, net	147		33
	Total other income, net	$	2,012	$	1,614

Capital_Stock_Tables

Capital Stock (Tables)	3 Months Ended
	Oct. 26, 2013
Stockholders' Equity Note [Abstract]	'
Schedule of Share Repurchases Under Current and Previously Authorized Share Repurchase Programs	'
	the Company made the following repurchases:
	Three Months Ended	Number of Shares Repurchased	Total Consideration		Average Price Per Share
			(Dollars in thousands)
	Fiscal 2012	597,700	$	12,960	$	21.68
	Fiscal 2013	1,047,000	$	15,203	$	14.52

StockBased_Awards_Tables

Stock-Based Awards (Tables)	3 Months Ended
	Oct. 26, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Schedule of Stock-based Compensation Expense and Related Tax Benefit Recognized	'
	Stock-based compensation expense and the related tax benefit recognized related to stock options and restricted share units during the three months ended October 26, 2013 and October 27, 2012 were as follows:
		For the Three Months Ended
		26-Oct-13			27-Oct-12
		(Dollars in thousands)
	Stock-based compensation	$	3,506		$	2,266
	Tax benefit recognized in the statement of operations	$	1,299		$	765
Schedule of Share-based Compensation, Stock Options Award Activity	'
	The following table summarizes stock option award activity during the three months ended October 26, 2013:
		Stock Options
		Shares		Weighted Average Exercise Price
	Outstanding as of July 27, 2013	2,769,132		$	18.27
	Options exercised	(454,216	)	$	22.29
	Outstanding as of October 26, 2013	2,314,916		$	17.48
	Exercisable options as of October 26, 2013	1,424,099		$	19.7
Schedule of Share-based Compensation, RSU and Performance RSU Activity	'
	The following table summarizes RSU and Performance RSU activity during the three months ended October 26, 2013:
		Restricted Stock
		RSUs					Performance RSUs
		Share Units		Weighted Average Grant Price			Share Units		Weighted Average Grant Price
	Outstanding as of July 27, 2013	463,318		$	17.78		1,315,138		$	18.44
	Granted	1,035		$	25.99		65,154		$	30.55
	Share units vested	(1,035	)	$	25.99		(43,979	)	$	14.75
	Forfeited or canceled	—		$	—		(265,461	)	$	18.36
	Outstanding as of October 26, 2013	463,318		$	17.78		1,070,852		$	19.35

Concentration_of_Credit_Risk_T

Concentration of Credit Risk (Tables)	3 Months Ended
	Oct. 26, 2013
Risks and Uncertainties [Abstract]	'
Schedule that Represents A Significant Portion of the Companybs Customer Base and Each Over 10% of Total Revenue	'
	10% of total revenue during the three months ended October 26, 2013 or October 27, 2012:
		For the Three Months Ended
		October 26, 2013		October 27, 2012
	AT&T Inc. ("AT&T")	17.50%		13.50%
	CenturyLink, Inc. ("CenturyLink")	15.50%		13.70%
	Comcast Corporation ("Comcast")	10.50%		12.70%
	Verizon Communications, Inc. ("Verizon")	8.40%		10.20%
Schedule of Customers Representing 10% or More of Combined Amounts of Trade Accounts Receivable and Costs and Estimated Earnings in Excess of Billings with the Following Outstanding Balances and Related Percentages of the Companybs Total Outstanding Balances	'
	Customers representing 10% or more of combined amounts of trade accounts receivable and costs and estimated earnings in excess of billings as of October 26, 2013 or July 27, 2013 had the following outstanding balances and the related percentage of the Company’s total outstanding balances:
		October 26, 2013					July 27, 2013
		Amount			% of Total		Amount		% of Total
					(Dollars in millions)
	AT&T	$	69		13.1	%	$	57.4	12.6	%
	CenturyLink	$	66.5		12.6	%	$	62.6	13.7	%
	Verizon	$	54.8		10.4	%	$	33.4	7.3	%
	Windstream Corporation	$	51.4		9.8	%	$	59.4	13	%

Supplemental_Consolidating_Fin1

Supplemental Consolidating Financial Statements (Tables)	3 Months Ended
	Oct. 26, 2013
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'
Schedule of Condensed Balance Sheet	'
	DYCOM INDUSTRIES, INC. AND SUBSIDIARIES
	CONDENSED CONSOLIDATED BALANCE SHEET (UNAUDITED)
	26-Oct-13
		Parent			Issuer			Subsidiary Guarantors			Non- Guarantor Subsidiaries			Eliminations and Reclassifications			Dycom Consolidated
		(Dollars in thousands)
	ASSETS
	CURRENT ASSETS:
	Cash and equivalents	$	—		$	—		$	13,631		$	763		$	—		$	14,394
	Accounts receivable, net	—			—			303,178			1,234			—			304,412
	Costs and estimated earnings in excess of billings	—			—			218,997			2,113			—			221,110
	Inventories	—			—			39,273			—			—			39,273
	Deferred tax assets, net	2,434			—			16,573			96			(1,385		)	17,718
	Income taxes receivable	2,231			—			—			—			—			2,231
	Other current assets	8,446			55			7,189			502			—			16,192
	Total current assets	13,111			55			598,841			4,708			(1,385		)	615,330
	PROPERTY AND EQUIPMENT, NET	14,666			—			173,353			15,897			—			203,916
	GOODWILL	—			—			267,810			—			—			267,810
	INTANGIBLE ASSETS, NET	—			—			120,021			—			—			120,021
	DEFERRED TAX ASSETS, NET NON-CURRENT	84			—			4,224			162			(4,470		)	—
	INVESTMENT IN SUBSIDIARIES	788,300			1,494,353			—			—			(2,282,653		)	—
	INTERCOMPANY RECEIVABLES	—			—			571,013			—			(571,013		)	—
	OTHER	8,883			6,153			2,073			90			—			17,199
	TOTAL NON-CURRENT ASSETS	811,933			1,500,506			1,138,494			16,149			(2,858,136		)	608,946
	TOTAL ASSETS	$	825,044		$	1,500,561		$	1,737,335		$	20,857		$	(2,859,521	)	$	1,224,276
	LIABILITIES AND STOCKHOLDERS' EQUITY
	CURRENT LIABILITIES:
	Accounts payable	$	3,639		$	—		$	64,623		$	664		$	—		$	68,926
	Current portion of debt	8,594			—			—			—			—			8,594
	Billings in excess of costs and estimated earnings	—			—			13,347			—			—			13,347
	Accrued insurance claims	618			—			30,829			81			—			31,528
	Deferred tax liabilities	—			155			89			1,141			(1,385		)	—
	Other accrued liabilities	15,986			5,560			56,596			1,311			—			79,453
	Total current liabilities	28,837			5,715			165,484			3,197			(1,385		)	201,848
	LONG-TERM DEBT	194,719			281,016			—			—			—			475,735
	ACCRUED INSURANCE CLAIMS	738			—			29,290			86			—			30,114
	DEFERRED TAX LIABILITIES, NET NON-CURRENT	—			427			53,119			527			(4,470		)	49,603
	INTERCOMPANY PAYABLES	136,610			425,103			—			9,300			(571,013		)	—
	OTHER LIABILITIES	3,156			—			2,832			4			—			5,992
	Total liabilities	364,060			712,261			250,725			13,114			(576,868		)	763,292
	Total stockholders' equity	460,984			788,300			1,486,610			7,743			(2,282,653		)	460,984
	TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$	825,044		$	1,500,561		$	1,737,335		$	20,857		$	(2,859,521	)	$	1,224,276
	DYCOM INDUSTRIES, INC. AND SUBSIDIARIES
	CONDENSED CONSOLIDATED BALANCE SHEET
	27-Jul-13
		Parent			Issuer			Subsidiary Guarantors			Non- Guarantor Subsidiaries			Eliminations and Reclassifications			Dycom Consolidated
		(Dollars in thousands)
	ASSETS
	CURRENT ASSETS:
	Cash and equivalents	$	—		$	—		$	18,166		$	441		$	—		$	18,607
	Accounts receivable, net	—			—			249,533			2,669			—			252,202
	Costs and estimated earnings in excess of billings	—			—			202,651			1,698			—			204,349
	Inventories	—			—			35,999			—			—			35,999
	Deferred tax assets, net	2,285			—			15,873			121			(1,426		)	16,853
	Income taxes receivable	2,516			—			—			—			—			2,516
	Other current assets	2,563			10			7,583			452			—			10,608
	Total current assets	7,364			10			529,805			5,381			(1,426		)	541,134
	PROPERTY AND EQUIPMENT, NET	13,779			—			173,254			15,670			—			202,703
	GOODWILL	—			—			267,810			—			—			267,810
	INTANGIBLE ASSETS, NET	—			—			125,275			—			—			125,275
	DEFERRED TAX ASSETS, NET NON-CURRENT	691			—			4,104			66			(4,861		)	—
	INVESTMENT IN SUBSIDIARIES	769,639			1,472,559			—			—			(2,242,198		)	—
	INTERCOMPANY RECEIVABLES	—			—			618,524			—			(618,524		)	—
	OTHER	8,739			6,331			2,133			83			—			17,286
TOTAL NON-CURRENT ASSETS	792,848			1,478,890			1,191,100			15,819			(2,865,583		)	613,074
TOTAL ASSETS	$	800,212		$	1,478,900		$	1,720,905		$	21,200		$	(2,867,009	)	$	1,154,208
LIABILITIES AND STOCKHOLDERS' EQUITY
CURRENT LIABILITIES:
Accounts payable	$	2,042		$	—		$	75,012		$	900		$	—		$	77,954
Current portion of debt	7,813			—			—			—			—			7,813
Billings in excess of costs and estimated earnings	—			—			13,788			—			—			13,788
Accrued insurance claims	619			—			28,342			108			—			29,069
Deferred tax liabilities	—			155			140			1,131			(1,426		)	—
Other accrued liabilities	9,151			1,321			59,374			1,345			—			71,191
Total current liabilities	19,625			1,476			176,656			3,484			(1,426		)	199,815
LONG-TERM DEBT	163,062			281,107			—			—			—			444,169
ACCRUED INSURANCE CLAIMS	726			—			26,426			98			—			27,250
DEFERRED TAX LIABILITIES, NET NON-CURRENT	—			427			52,436			610			(4,861		)	48,612
INTERCOMPANY PAYABLES	185,296			426,251			—			6,977			(618,524		)	—
OTHER LIABILITIES	3,142			—			2,855			4			—			6,001
Total liabilities	371,851			709,261			258,373			11,173			(624,811		)	725,847
Total stockholders' equity	428,361			769,639			1,462,532			10,027			(2,242,198		)	428,361
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$	800,212		$	1,478,900		$	1,720,905		$	21,200		$	(2,867,009	)	$	1,154,208
Schedule of Condensed Income Statement	'
	DYCOM INDUSTRIES, INC. AND SUBSIDIARIES
	CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS (UNAUDITED)
	FOR THE THREE MONTHS ENDED OCTOBER 26, 2013
		Parent			Issuer			Subsidiary Guarantors			Non- Guarantor Subsidiaries			Eliminations and Reclassifications			Dycom Consolidated
		(Dollars in thousands)
	REVENUES:
	Contract revenues	$	—		$	—		$	509,430		$	3,290		$	—		$	512,720
	EXPENSES:
	Costs of earned revenues, excluding depreciation and amortization	—			—			407,695			2,424			—			410,119
	General and administrative	11,237			226			28,945			2,667			—			43,075
	Depreciation and amortization	854			—			21,621			1,077			—			23,552
	Intercompany charges (income), net	(13,976		)	—			14,110			(134		)	—			—
	Total	(1,885		)	226			472,371			6,034			—			476,746
	Interest expense, net	(1,888		)	(4,994		)	(4		)	—			—			(6,886		)
	Other income, net	3			—			1,945			64			—			2,012
	INCOME (LOSS) BEFORE INCOME TAXES AND EQUITY IN EARNINGS OF SUBSIDIARIES	—			(5,220		)	39,000			(2,680		)	—			31,100
	PROVISION (BENEFIT) FOR INCOME TAXES	—			(2,087		)	15,600			(1,073		)	—			12,440
	NET INCOME (LOSS) BEFORE EQUITY IN EARNINGS OF SUBSIDIARIES	—			(3,133		)	23,400			(1,607		)	—			18,660
	EQUITY IN EARNINGS OF SUBSIDIARIES	18,660			21,793			—			—			(40,453		)	—
	NET INCOME (LOSS)	$	18,660		$	18,660		$	23,400		$	(1,607	)	$	(40,453	)	$	18,660
	Foreign currency translation loss	(60		)	(60		)	—			(60		)	120			(60		)
	COMPREHENSIVE INCOME (LOSS)	$	18,600		$	18,600		$	23,400		$	(1,667	)	$	(40,333	)	$	18,600
	DYCOM INDUSTRIES, INC. AND SUBSIDIARIES
	CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS (UNAUDITED)
	FOR THE THREE MONTHS ENDED OCTOBER 27, 2012
		Parent			Issuer			Subsidiary Guarantors			Non-Guarantor Subsidiaries			Eliminations and Reclassifications			Dycom Consolidated
		(Dollars in thousands)
	REVENUES:
	Contract revenues	$	—		$	—		$	319,025		$	4,261		$	—		$	323,286
	EXPENSES:
	Costs of earned revenues, excluding depreciation and amortization	—			—			253,544			3,522			—			257,066
	General and administrative	8,409			146			17,616			2,653			—			28,824
	Depreciation and amortization	740			—			13,286			1,285			—			15,311
	Intercompany charges (income), net	(9,925		)	—			10,272			(347		)	—			—
	Total	(776		)	146			294,718			7,113			—			301,201
	Interest income (expense), net	(776		)	(3,420		)	(1		)	—			—			(4,197		)
	Other income, net	—			—			1,565			49			—			1,614
	INCOME (LOSS) BEFORE INCOME TAXES AND EQUITY IN EARNINGS OF SUBSIDIARIES	—			(3,566		)	25,871			(2,803		)	—			19,502
	PROVISION (BENEFIT) FOR INCOME TAXES	—			(1,397		)	10,136			(1,098		)	—			7,641
	NET INCOME (LOSS) BEFORE EQUITY IN EARNINGS OF SUBSIDIARIES	—			(2,169		)	15,735			(1,705		)	—			11,861
	EQUITY IN EARNINGS OF SUBSIDIARIES	11,861			14,030			—			—			(25,891		)	—
	NET INCOME (LOSS)	$	11,861		$	11,861		$	15,735		$	(1,705	)	$	(25,891	)	$	11,861
	Foreign currency translation gain	2			2			—			2			(4		)	2
	COMPREHENSIVE INCOME (LOSS)	$	11,863		$	11,863		$	15,735		$	(1,703	)	$	(25,895	)	$	11,863
Schedule of Condensed Cash Flow Statement	'
	DYCOM INDUSTRIES, INC. AND SUBSIDIARIES
	CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS (UNAUDITED)
	FOR THE THREE MONTHS ENDED OCTOBER 26, 2013
		Parent			Issuer			Subsidiary Guarantors			Non- Guarantor Subsidiaries			Eliminations and Reclassifications			Dycom Consolidated
		(Dollars in thousands)
	Net cash (used in) provided by operating activities	$	(2,905	)	$	1,835		$	(17,351	)	$	(272	)	$	—		$	(18,693	)
	Cash flows from investing activities:
	Capital expenditures	(1,680		)	—			(27,042		)	(1,566		)	—			(30,288		)
	Proceeds from sale of assets	—			—			2,422			43			—			2,465
	Changes in restricted cash	(305		)	—			—			—			—			(305		)
	Net cash (used in) investing activities	(1,985		)	—			(24,620		)	(1,523		)	—			(28,128		)
	Cash flows from financing activities:
	Proceeds from borrowings on senior Credit Agreement	164,000			—			—			—			—			164,000
	Principal payments on senior Credit Agreement, including Term Loan	(131,563		)	—			—			—			—			(131,563		)
	Exercise of stock options	10,124			—			—			—			—			10,124
	Restricted stock tax withholdings	(609		)	—			—			—			—			(609		)
	Excess tax benefit from share-based awards	656			—			—			—			—			656
	Intercompany funding	(37,718		)	(1,835		)	37,436			2,117			—			—
	Net cash provided by (used in) financing activities	4,890			(1,835		)	37,436			2,117			—			42,608
	Net (decrease) increase in cash and equivalents	—			—			(4,535		)	322			—			(4,213		)
	CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	—			—			18,166			441			—			18,607
	CASH AND EQUIVALENTS AT END OF PERIOD	$	—		$	—		$	13,631		$	763		$	—		$	14,394
	DYCOM INDUSTRIES, INC. AND SUBSIDIARIES
	CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS (UNAUDITED)
	FOR THE THREE MONTHS ENDED OCTOBER 27, 2012
		Parent			Issuer			Subsidiary Guarantors			Non- Guarantor Subsidiaries			Eliminations and Reclassifications			Dycom Consolidated
		(Dollars in thousands)
	Net cash provided by (used in) operating activities	$	(2,961	)	$	1,260		$	30,527		$	(1,110	)	$	—		$	27,716
	Cash flows from investing activities:
	Capital expenditures	(2,026		)	—			(9,196		)	(1,301		)	—			(12,523		)
	Proceeds from sale of assets	—			—			1,958			48			—			2,006
	Net cash used in investing activities	(2,026		)	—			(7,238		)	(1,253		)	—			(10,517		)
	Cash flows from financing activities:
	Repurchases of common stock	(15,203		)	—			—			—			—			(15,203		)
	Exercise of stock options and other	166			—			—			—			—			166
	Restricted stock tax withholdings	(62		)	—			—			—			—			(62		)
	Excess tax benefit from share-based awards	64			—			—			—			—			64
	Principal payments on capital lease obligations	—			—			(19		)	—			—			(19		)
	Intercompany funding	20,022			(1,260		)	(20,737		)	1,975			—			—
	Net cash provided by (used in) financing activities	4,987			(1,260		)	(20,756		)	1,975			—			(15,054		)
	Net increase (decrease) in cash and equivalents	—			—			2,533			(388		)	—			2,145
	CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	—			—			51,563			1,018			—			52,581
	CASH AND EQUIVALENTS AT END OF PERIOD	$	—		$	—		$	54,096		$	630		$	—		$	54,726

Basis_of_Presentation_and_Acco2

Basis of Presentation and Accounting Policies (Details) (USD $)	3 Months Ended
	Oct. 26, 2013	Oct. 27, 2012	Jul. 27, 2013
Debt Instrument [Line Items]	'	'	'
Contract revenues	$512,720,000	$323,286,000	'
Restricted cash	4,000,000	'	3,700,000
Senior Subordinated Notes | 7.125% Senior Subordinated Notes Due 2021	'	'	'
Debt Instrument [Line Items]	'	'	'
Debt, interest rate (in percent)	7.13%	'	7.13%
Canada	'	'	'
Debt Instrument [Line Items]	'	'	'
Contract revenues	$3,300,000	$3,900,000	'

Computation_of_Earnings_Per_Co2

Computation of Earnings Per Common Share (Details) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
Basic earnings per unit	'	'
Net income	$18,660	$11,861
Weighted-average number of common shares (in shares)	33,423,678	33,089,959
Basic earnings per common share	$0.56	$0.36
Diluted earnings per unit	'	'
Weighted-average number of common shares (in shares)	33,423,678	33,089,959
Potential common stock arising from stock options, and unvested restricted share units (in shares)	1,215,320	631,111
Total shares-diluted (in shares)	34,638,998	33,721,070
Diluted earnings per common share	$0.54	$0.35
Anti-dilutive weighted shares excluded from the calculation of earnings per share (in shares)	547,154	1,940,101

Acquisitions_Details

Acquisitions (Details) (USD $)

3 Months Ended

3 Months Ended

0 Months Ended

0 Months Ended

Oct. 26, 2013

Oct. 27, 2012

Jul. 27, 2013

Dec. 03, 2012

Dec. 03, 2012

Oct. 26, 2013

Oct. 26, 2013

Oct. 26, 2013

Dec. 03, 2012

Dec. 12, 2012

Oct. 26, 2013

Jul. 27, 2013

Dec. 12, 2012

Quanta Services, Inc.

Sage Telecommunications Corp of Colorado, LLC

Businesses Acquired in Fiscal 2013

Senior Loan and Revolving Credit

Senior Loan and Revolving Credit

Senior Subordinated Notes

Senior Subordinated Notes

Senior Subordinated Notes

Senior Subordinated Notes

Credit Agreement, December 3, 2012, Maturing December 2017

Credit Agreement, December 3, 2012, Maturing December 2017

7.125% Senior Subordinated Notes Due 2021

7.125% Senior Subordinated Notes Due 2021

7.125% Senior Subordinated Notes Due 2021

7.125% Senior Subordinated Notes Due 2021

Dycom Investments, Inc.

Business Acquisition [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash paid

'

'

'

'

$275,000,000

'

'

'

'

'

'

'

'

Estimated adjustment for working capital received in excess of target amount

'

'

'

'

40,400,000

'

'

'

'

'

'

'

'

Amount paid for other specified items

'

'

'

'

3,700,000

'

'

'

'

'

'

'

'

Credit facility amount

'

'

'

'

'

'

'

'

400,000,000

'

'

'

'

Proceeds from issuance of long-term debt

'

'

'

'

'

'

'

'

'

90,000,000

'

'

90,000,000

Debt, interest rate (in percent)

'

'

'

'

'

'

'

'

'

'

7.13%

7.13%

'

Repayments of credit facility

'

'

'

'

'

'

'

90,000,000

'

'

'

'

'

Number of states in which entity operates

'

'

'

50

'

'

'

'

'

'

'

'

'

Acquisition payments

'

'

'

'

'

11,300,000

'

'

'

'

'

'

'

Goodwill

267,810,000

'

267,810,000

87,900,000

'

5,000,000

'

'

'

'

'

'

'

Carrying amount

'

'

'

90,600,000

'

'

'

'

'

'

'

'

'

Revenues

'

'

'

'

'

'

150,300,000

'

'

'

'

'

'

Amortization expense for finite-lived intangible assets

5,200,000

1,600,000

'

'

'

'

3,400,000

'

'

'

'

'

'

Operating Income (Loss)

'

'

'

'

'

'

$4,200,000

'

'

'

'

'

'

Acquisitions_Net_Assets_Acquir

Acquisitions - Net Assets Acquired (Details) (USD $)	Oct. 26, 2013	Jul. 27, 2013	Dec. 03, 2012
BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract [Abstract]	'	'	'
Cash and equivalents	'	'	$200,000
Accounts receivable, net	'	'	112,200,000
Costs and estimated earnings in excess of billings	'	'	61,500,000
Inventories	'	'	9,000,000
Other current assets	'	'	1,600,000
Property and equipment	'	'	33,300,000
Goodwill	267,810,000	267,810,000	87,900,000
Other assets	'	'	2,300,000
Total assets	'	'	398,600,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]	'	'	'
Accounts payable	'	'	42,100,000
Billings in excess of costs and estimated earnings	'	'	10,300,000
Accrued and other liabilities	'	'	27,100,000
Total liabilities	'	'	79,500,000
Net Assets Acquired	'	'	319,100,000
Backlog	'	'	'
BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract [Abstract]	'	'	'
Intangibles	'	15,300,000	'
Quanta Services, Inc. | Customer Relationships	'	'	'
BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract [Abstract]	'	'	'
Intangibles	'	70,300,000	'
Quanta Services, Inc. | Trade Names	'	'	'
BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract [Abstract]	'	'	'
Intangibles	'	$5,000,000	'

Acquisitions_Pro_Forma_Results

Acquisitions - Pro Forma Results (Details) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Oct. 27, 2012
Business Acquisition, Pro Forma Information [Abstract]	'
Pro forma contract revenues	$499,666
Pro forma income before income taxes	36,205
Pro forma net income	$22,019
Business Acquisition, Pro Forma Information, Earnings (Loss) Per Share [Abstract]	'
Basic	$0.67
Diluted	$0.65

Accounts_Receivable_Details

Accounts Receivable (Details) (USD $)	Oct. 26, 2013	Jul. 27, 2013
In Thousands, unless otherwise specified
Receivables [Abstract]	'	'
Contract billings	$291,083	$239,498
Contract Receivable Retainage and Other Receivables	13,601	12,833
Total	304,684	252,331
Less: allowance for doubtful accounts	-272	-129
Accounts receivable, net	$304,412	$252,202

Accounts_Receivable_Accounts_R

Accounts Receivable Accounts Receivable - Parenthetical (Details) (USD $)	3 Months Ended
	Oct. 26, 2013	Oct. 27, 2012
Receivables [Abstract]	'	'
Allowance for Doubtful Accounts Receivable, Write-offs	$0	$0

Costs_and_Estimated_Earnings_i2

Costs and Estimated Earnings in Excess of Billings (Details) (USD $)	Oct. 26, 2013	Jul. 27, 2013
In Thousands, unless otherwise specified
Contractors [Abstract]	'	'
Costs incurred on contracts in progress	$220,475	$208,250
Estimated to date earnings	53,473	49,150
Total costs and estimated earnings	273,948	257,400
Less: billings to date	-66,185	-66,839
Total costs in excess of billings	207,763	190,561
Costs and estimated earnings in excess of billings	221,110	204,349
Billings in excess of costs and estimated earnings	($13,347)	($13,788)

Property_and_Equipment_Details

Property and Equipment (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012	Jul. 27, 2013
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Gross	$535,746	'	$522,141
Less: accumulated depreciation	-331,830	'	-319,438
Property and equipment, net	203,916	'	202,703
Depreciation and repairs and maintenance expenses [Abstract]	'	'	'
Depreciation expense	18,401	13,720	'
Repairs and maintenance expense	5,994	3,811	'
Land	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Useful Life	'0 years	'	'
Property, Plant and Equipment, Gross	3,479	'	3,479
Buildings	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Gross	11,511	'	11,449
Leasehold Improvements	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Gross	5,273	'	5,154
Vehicles	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Gross	264,023	'	258,211
Computer hardware and software	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Gross	66,961	'	64,191
Office furniture and equipment	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Gross	8,155	'	7,915
Equipment and machinery	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Gross	$176,344	'	$171,742
Maximum | Buildings	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Useful Life	'35 years	'	'
Maximum | Leasehold Improvements	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Useful Life	'15 years	'	'
Maximum | Vehicles	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Useful Life	'5 years	'	'
Maximum | Computer hardware and software	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Useful Life	'10 years	'	'
Maximum | Office furniture and equipment	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Useful Life	'7 years	'	'
Maximum | Equipment and machinery	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Useful Life	'10 years	'	'
Minimum | Buildings	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Useful Life	'10 years	'	'
Minimum | Leasehold Improvements	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Useful Life	'1 year	'	'
Minimum | Vehicles	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Useful Life	'1 year	'	'
Minimum | Computer hardware and software	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Useful Life	'3 years	'	'
Minimum | Office furniture and equipment	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Useful Life	'2 years	'	'
Minimum | Equipment and machinery	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'
Property, Plant and Equipment, Useful Life	'1 year	'	'

Goodwill_and_Intangible_Assets2

Goodwill and Intangible Assets (Details) (USD $)	3 Months Ended
	Oct. 26, 2013	Oct. 27, 2012	Jul. 27, 2013	Dec. 03, 2012
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]	'	'	'	'
Goodwill	$267,810,000	'	$267,810,000	$87,900,000
Amortization expense for finite-lived intangible assets	5,200,000	1,600,000	'	'
UtiliQuest trade name	'	'	'	'
Finite-Lived and Indefinite-Lived Intangible Assets [Line Items]	'	'	'	'
Goodwill	'	'	35,600,000	'
Indefinite-Lived Intangible Assets	$4,700,000	'	$4,700,000	'
Margin of excess	'	'	20.00%	'

Goodwill_and_Intangible_Assets3

Goodwill and Intangible Assets - Schedule of Intangible Assets (Details) (USD $)

Oct. 26, 2013

Jul. 27, 2013

Dec. 03, 2012

Oct. 26, 2013

Jul. 27, 2013

Oct. 26, 2013

Jul. 27, 2013

Oct. 26, 2013

Jul. 27, 2013

Oct. 26, 2013

Jul. 27, 2013

Oct. 26, 2013

Jul. 27, 2013

In Thousands, unless otherwise specified

Customer Relationships

Customer Relationships

Contract Backlog

Contract Backlog

Trade Names

Trade Names

UtiliQuest trade name

UtiliQuest trade name

Noncompete Agreements

Noncompete Agreements

Finite-Lived Intangible Assets [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Weighted Average Remaining, Useful Lives

'

'

'

'12 years 1 month 6 days

'

'2 years 3 months 18 days

'

'4 years 9 months 18 days

'

'0 years

'

'4 years 1 month 6 days

'

Carrying amount

'

'

$90,600

$164,394

$164,497

$15,285

$15,285

$8,200

$8,200

'

'

$400

$400

Indefinite-Lived Intangible Assets

'

'

'

'

'

'

'

'

'

4,700

4,700

'

'

Gross Intangible Assets

192,979

193,082

'

'

'

'

'

'

'

'

'

'

'

Accumulated Amortization

'

'

'

59,454

56,219

11,006

9,433

2,394

2,071

'

'

104

84

Net Intangible Assets

$120,021

$125,275

'

'

'

'

'

'

'

'

'

'

'

Goodwill_and_Intangible_Assets4

Goodwill and Intangible Assets Goodwill and Intangible Assets - Future Amortization Expense (Details) (USD $)	Oct. 26, 2013
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]	'
Fiscal 2014	$12,963
Fiscal 2015	15,027
Fiscal 2016	14,276
Fiscal 2017	12,885
Fiscal 2018	10,697
Fiscal 2019	8,395
Thereafter	$41,078

Accrued_Insurance_Claims_Detai

Accrued Insurance Claims (Details) (USD $)	Jul. 26, 2014	Oct. 26, 2013
Accrued Insurance Claims [Line Items]	'	'
Aggregate stop loss coverage for automobile liability, general liability and workers' compensation claims	$56,300,000	'
Insurance liability, annual retained risk loss	'	250,000
Retained risk of loss per participant for employee health plan for claim amounts that aggregate across all participants in excess of $250,000	'	550,000
Health plan participant threshold	'	250,000
Maximum	'	'
Accrued Insurance Claims [Line Items]	'	'
Retained risk of loss, general liability and workers' compensation, maximum automobile liability	'	$1,000,000

Accrued_Insurance_Claims_Accru

Accrued Insurance Claims Accrued Insurance Claims - Detailed Table (Details) (USD $)	Oct. 26, 2013	Jul. 27, 2013
In Thousands, unless otherwise specified
Amounts expected to be paid within one year:	'	'
Accrued auto, general liability and workers' compensation	$20,824	$19,328
Accrued employee group health	3,596	3,710
Accrued damage claims	7,108	6,031
Accrued insurance claims	31,528	29,069
Amounts expected to be paid beyond one year:	'	'
Accrued auto, general liability and workers' compensation	27,877	25,245
Accrued damage claims	2,237	2,005
Accrued insurance claims, Noncurrent	30,114	27,250
Total accrued insurance claims	$61,642	$56,319

Other_Accrued_Liabilities_Deta

Other Accrued Liabilities (Details) (USD $)	Oct. 26, 2013	Jul. 27, 2013
Other Accrued Liabilities [Line Items]	'	'
Accrued payroll and related taxes	$20,616,000	$19,940,000
Accrued employee benefit and incentive plan costs	9,483,000	15,325,000
Accrued construction costs	22,001,000	20,883,000
Accrued interest and related bank fees	5,883,000	937,000
Other current liabilities	21,470,000	14,106,000
Total other accrued liabilities	79,453,000	71,191,000
Other Accrued Liabilities	'	'
Other Accrued Liabilities [Line Items]	'	'
Accrued income taxes for other current liabilities	$9,100,000	$2,300,000

Debt_Details

Debt (Details) (USD $)

Oct. 26, 2013

Jul. 27, 2013

Dec. 12, 2012

Oct. 26, 2013

Jul. 27, 2013

Oct. 26, 2013

Jul. 27, 2013

Dec. 03, 2012

Oct. 26, 2013

Jul. 27, 2013

Dec. 03, 2012

Oct. 26, 2013

Jul. 27, 2013

Dec. 03, 2012

Jul. 27, 2013

Jul. 27, 2013

Oct. 26, 2013

Jul. 27, 2013

Senior Subordinated Notes

Senior Subordinated Notes

Senior Subordinated Notes

Senior Loans

Senior Loans

Senior Loans

Revolving Credit Facility

Revolving Credit Facility

Revolving Credit Facility

Revolving Credit Facility

Revolving Credit Facility

Revolving Credit Facility

Revolving Credit Facility

Revolving Credit Facility

Debt Premium

Debt Premium

7.125% Senior Subordinated Notes Due 2021

7.125% Senior Subordinated Notes Due 2021

7.125% Senior Subordinated Notes Due 2021

Credit Agreement, December 3, 2012, Maturing December 2017

Credit Agreement, December 3, 2012, Maturing December 2017

Credit Agreement, December 3, 2012, Maturing December 2017

Credit Agreement, December 3, 2012, Maturing December 2017

Credit Agreement, December 3, 2012, Maturing December 2017

Credit Agreement, December 3, 2012, Maturing December 2017

Credit Agreement, December 3, 2012, Maturing December 2017

Credit Agreement, December 3, 2012, Maturing December 2017

Credit Agreement, December 3, 2012, Maturing December 2017

Prior Credit Agreement Which Has Been Terminated or Replaced

Prior Credit Agreement Which Has Been Terminated or Replaced

7.125% Senior Subordinated Notes Due 2021

7.125% Senior Subordinated Notes Due 2021

Standby Letters of Credit

Standby Letters of Credit

Standby Letters of Credit

Standby Letters of Credit

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt and capital lease obligations

$484,329,000

$451,982,000

'

$277,500,000

$277,500,000

$120,313,000

$121,875,000

'

$83,000,000

$49,000,000

'

'

'

'

'

'

$281,000,000

$281,100,000

Debt, interest rate (in percent)

'

'

'

7.13%

7.13%

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt premium

3,500,000

3,600,000

'

3,516,000

3,607,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from issuance of long-term debt

'

'

90,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Senior subordinated notes issued under the indenture (in percent)

'

'

104.25%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-term debt, fair value

'

'

'

293,800,000

292,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Credit facility amount

'

'

'

'

'

'

'

125,000,000

'

'

'

'

'

'

'

'

'

'

Line of credit current borrowing capacity

'

'

'

'

'

'

'

'

'

'

275,000,000

'

'

150,000,000

'

'

'

'

Line of credit incremental additional facilities option

'

'

'

'

'

'

'

'

'

'

100,000,000

'

'

'

'

'

'

'

Debt Instrument, Interest Rate at Period End

'

'

'

'

'

2.17%

2.19%

'

2.38%

2.19%

'

'

'

'

'

'

'

'

Letters of credit outstanding amount

'

'

'

'

'

'

'

'

'

'

'

49,700,000

'

'

'

46,700,000

'

'

Line of Credit Facility, Unused Capacity, Commitment Fee Percentage

'

'

'

'

'

'

'

'

0.35%

0.35%

'

2.00%

2.00%

'

'

'

'

'

Additional borrowing availability

'

'

'

'

'

'

'

'

$142,300,000

'

'

'

'

'

$179,300,000

'

'

'

Debt_Outstanding_Details

Debt - Outstanding (Details) (USD $)	Oct. 26, 2013	Jul. 27, 2013
In Thousands, unless otherwise specified
Debt Instrument [Line Items]	'	'
Debt and capital lease obligations	$484,329	$451,982
Debt premium	3,500	3,600
Less: current portion	8,594	7,813
Long-term debt	475,735	444,169
Revolving Credit Facility | Credit Agreement, December 3, 2012, Maturing December 2017	'	'
Debt Instrument [Line Items]	'	'
Debt and capital lease obligations	83,000	49,000
Senior Loans | Credit Agreement, December 3, 2012, Maturing December 2017	'	'
Debt Instrument [Line Items]	'	'
Debt and capital lease obligations	120,313	121,875
Senior Subordinated Notes | 7.125% Senior Subordinated Notes Due 2021	'	'
Debt Instrument [Line Items]	'	'
Debt and capital lease obligations	277,500	277,500
Debt premium	$3,516	$3,607
Debt, interest rate (in percent)	7.13%	7.13%

Income_Taxes_Details

Income Taxes (Details) (USD $)	Oct. 26, 2013	Jul. 27, 2013
Income Tax Disclosure [Abstract]	'	'
Unrecognized Tax Benefits	$2,348,000	$2,348,000
Payment of interest and penalties accrued	'	$800,000

Other_Income_Net_Details

Other Income, Net (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
Other Income and Expenses [Abstract]	'	'
Gain on sale of fixed assets	$1,865	$1,581
Miscellaneous income, net	147	33
Total other income, net	$2,012	$1,614

Employee_Benefit_Plans_Details

Employee Benefit Plans (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
Compensation and Retirement Disclosure [Abstract]	'	'
Multiemployer plan contributions	$800	$700

Capital_Stock_Details

Capital Stock (Details) (USD $)	3 Months Ended		12 Months Ended		0 Months Ended
	Oct. 26, 2013	Oct. 27, 2012	Jul. 27, 2013	Jul. 28, 2012	Mar. 15, 2012
					Common Stock
Class of Stock [Line Items]	'	'	'	'	'
Common stock authorized repurchase amount	'	'	'	'	$40,000,000
Repurchase of common stock	'	'	1,047,000	597,700	'
Total Consideration (Dollars in thousands)	$0	$15,203,000	$15,203,000	$12,960,000	'
Average Price Per Share (in dollars per share)	'	'	$14.52	$21.68	'

StockBased_Awards_Details

Stock-Based Awards (Details) (USD $)	0 Months Ended	3 Months Ended
In Millions, except Share data, unless otherwise specified	Oct. 26, 2013	Oct. 26, 2013	Jul. 27, 2013
Stock Options	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Unrecognized compensation expense related to stock options	$4.30	$4.30	'
Total compensation cost not yet recognized, period for recognition	'1 year 10 months 17 days	'	'
Restricted Share Units (RSUs)	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Unrecognized compensation expense related to RSUs	6.1	6.1	'
Total compensation cost not yet recognized, period for recognition	'2 years 10 months 21 days	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	'	1,035	'
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value [Roll Forward]	'	'	'
Outstanding beginning period	'	$17.78	'
Granted	'	$25.99	'
Share Units Vested	'	$25.99	'
Forfeited or cancelled	'	$0	'
Outstanding ending period	$17.78	$17.78	'
RSUs outstanding	463,318	463,318	463,318
Performance Restricted Share Units	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Unrecognized compensation expense related to RSUs	7.9	7.9	'
Total compensation cost not yet recognized, period for recognition	'1 year 5 months 30 days	'	'
Compensation expense	$8.20	$8.20	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	'	65,154	'
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value [Roll Forward]	'	'	'
Outstanding beginning period	'	$18.44	'
Granted	'	$30.55	'
Share Units Vested	'	$14.75	'
Forfeited or cancelled	'	$18.36	'
Outstanding ending period	$19.35	$19.35	'
RSUs outstanding	1,070,852	1,070,852	1,315,138
Performance Restricted Share Units | Target Shares [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	'	32,577	'
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value [Roll Forward]	'	'	'
RSUs outstanding	646,167	646,167	'
Performance Restricted Share Units | Supplemental Shares [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	'	32,577	'
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value [Roll Forward]	'	'	'
RSUs outstanding	424,685	424,685	'
Performance Restricted Share Units | Scenario, Forecast	'	'	'
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value [Roll Forward]	'	'	'
Forfeited or cancelled	'	265,000	'

StockBased_Awards_Tax_Benefit_

Stock-Based Awards - Tax Benefit Recognized (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'	'
Stock-based compensation	$3,506	$2,266
Tax benefit recognized in the statement of operations	$1,299	$765

StockBased_Awards_Valuation_of

Stock-Based Awards - Valuation of Stock Options and Restricted Share Units (Details) (USD $)	3 Months Ended
	Oct. 26, 2013
Stock Options	'
Stock Options, Outstanding [Roll Forward]	'
Outstanding beginning period	2,769,132
Options Exercised	-454,216
Outstanding ending period	2,314,916
Exercisable options beginning period	1,424,099
Stock Options, Outstanding, Weighted Average Exercise Price [Roll Forward]	'
Outstanding beginning period	$18.27
Options Exercised	$22.29
Outstanding ending period	$17.48
Exercisable options beginning period	$19.70
Restricted Share Units (RSUs)	'
Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Outstanding [Roll Forward]	'
Outstanding beginning period	463,318
Share Units Vested	-1,035
Forfeited or cancelled	0
Outstanding ending period	463,318
Performance Restricted Share Units	'
Share Based Compensation Arrangement By Share Based Payment Award Non Option Equity Instruments Outstanding [Roll Forward]	'
Outstanding beginning period	1,315,138
Share Units Vested	-43,979
Forfeited or cancelled	-265,461
Outstanding ending period	1,070,852

Related_Party_Transactions_Det

Related Party Transactions (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
Related Party Transactions [Abstract]	'	'
Total expense under lease agreements	$0.60	$0.30

Commitments_and_Contingencies_

Commitments and Contingencies (Details) (USD $)	Oct. 26, 2013	Jul. 27, 2013
In Millions, unless otherwise specified
Credit Agreement, December 3, 2012, Maturing December 2017 | Revolving Credit Facility | Standby Letters of Credit	'	'
Loss Contingencies [Line Items]	'	'
Letters of credit outstanding amount	$49.70	'
Prior Credit Agreement Which Has Been Terminated or Replaced | Revolving Credit Facility | Standby Letters of Credit	'	'
Loss Contingencies [Line Items]	'	'
Letters of credit outstanding amount	'	46.7
Performance Guarantee and Surety Bond	'	'
Loss Contingencies [Line Items]	'	'
Outstanding performance and other surety contract bonds	$435.30	$446.50

Concentration_of_Credit_Risk_D

Concentration of Credit Risk (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012	Jul. 27, 2013
Concentration Risk [Line Items]	'	'	'
Number of customers classified as highly concentrated	5	'	'
Customer Concentration Risk | Five Unnamed Customers	'	'	'
Concentration Risk [Line Items]	'	'	'
Concentration risk percentage	57.20%	59.60%	'
Sales Revenue, Services, Net | Customer Concentration Risk | AT&T	'	'	'
Concentration Risk [Line Items]	'	'	'
Concentration risk percentage	17.50%	13.50%	'
Sales Revenue, Services, Net | Customer Concentration Risk | CenturyLink	'	'	'
Concentration Risk [Line Items]	'	'	'
Concentration risk percentage	15.50%	13.70%	'
Sales Revenue, Services, Net | Customer Concentration Risk | Comcast	'	'	'
Concentration Risk [Line Items]	'	'	'
Concentration risk percentage	10.50%	12.70%	'
Sales Revenue, Services, Net | Customer Concentration Risk | Verizon	'	'	'
Concentration Risk [Line Items]	'	'	'
Concentration risk percentage	8.40%	10.20%	'
Trade Accounts Receivable and Costs and Estimated Earnings | Customer Concentration Risk | AT&T	'	'	'
Concentration Risk [Line Items]	'	'	'
Concentration risk percentage	13.10%	12.60%	'
Accounts receivable, costs, and estimated earnings in excess of billings	$69	'	$57.40
Trade Accounts Receivable and Costs and Estimated Earnings | Customer Concentration Risk | CenturyLink	'	'	'
Concentration Risk [Line Items]	'	'	'
Concentration risk percentage	12.60%	13.70%	'
Accounts receivable, costs, and estimated earnings in excess of billings	66.5	'	62.6
Trade Accounts Receivable and Costs and Estimated Earnings | Customer Concentration Risk | Windstream Corporation	'	'	'
Concentration Risk [Line Items]	'	'	'
Concentration risk percentage	9.80%	13.00%	'
Accounts receivable, costs, and estimated earnings in excess of billings	51.4	'	59.4
Trade Accounts Receivable and Costs and Estimated Earnings | Customer Concentration Risk | Verizon	'	'	'
Concentration Risk [Line Items]	'	'	'
Concentration risk percentage	10.40%	7.30%	'
Accounts receivable, costs, and estimated earnings in excess of billings	$54.80	'	$33.40

Supplemental_Consolidating_Fin2

Supplemental Consolidating Financial Statements (Details) (USD $)	Oct. 26, 2013	Jul. 27, 2013
In Thousands, unless otherwise specified
Debt Instrument [Line Items]	'	'
Debt and capital lease obligations	$484,329	$451,982
7.125% Senior Subordinated Notes Due 2021 | Senior Subordinated Notes	'	'
Debt Instrument [Line Items]	'	'
Debt and capital lease obligations	$277,500	$277,500

Supplemental_Consolidating_Fin3

Supplemental Consolidating Financial Statements - Balance Sheet (Details) (USD $)	Oct. 26, 2013	Jul. 27, 2013	Dec. 03, 2012	Oct. 27, 2012	Jul. 28, 2012
In Thousands, unless otherwise specified
CURRENT ASSETS:	'	'	'	'	'
Cash and equivalents	$14,394	$18,607	'	$54,726	$52,581
Accounts receivable, net	304,412	252,202	'	'	'
Costs and estimated earnings in excess of billings	221,110	204,349	'	'	'
Inventories	39,273	35,999	'	'	'
Deferred tax assets, net	17,718	16,853	'	'	'
Income taxes receivable	2,231	2,516	'	'	'
Other current assets	16,192	10,608	'	'	'
Total current assets	615,330	541,134	'	'	'
PROPERTY AND EQUIPMENT, NET	203,916	202,703	'	'	'
GOODWILL	267,810	267,810	87,900	'	'
INTANGIBLE ASSETS, NET	120,021	125,275	'	'	'
DEFERRED TAX ASSETS, NET NON-CURRENT	0	0	'	'	'
INVESTMENT IN SUBSIDIARIES	0	0	'	'	'
INTERCOMPANY RECEIVABLES	0	0	'	'	'
OTHER	17,199	17,286	'	'	'
TOTAL NON-CURRENT ASSETS	608,946	613,074	'	'	'
TOTAL ASSETS	1,224,276	1,154,208	'	'	'
CURRENT LIABILITIES:	'	'	'	'	'
Accounts payable	68,926	77,954	'	'	'
Current portion of debt	8,594	7,813	'	'	'
Billings in excess of costs and estimated earnings	13,347	13,788	'	'	'
Accrued insurance claims	31,528	29,069	'	'	'
Deferred Tax Liabilities, Net, Current	0	0	'	'	'
Other accrued liabilities	79,453	71,191	'	'	'
Total current liabilities	201,848	199,815	'	'	'
Long-term debt	475,735	444,169	'	'	'
ACCRUED INSURANCE CLAIMS	30,114	27,250	'	'	'
DEFERRED TAX LIABILITIES, NET NON-CURRENT	49,603	48,612	'	'	'
INTERCOMPANY PAYABLES	0	0	'	'	'
OTHER LIABILITIES	5,992	6,001	'	'	'
Total liabilities	763,292	725,847	'	'	'
Total stockholders' equity	460,984	428,361	'	'	'
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	1,224,276	1,154,208	'	'	'
Parent	'	'	'	'	'
CURRENT ASSETS:	'	'	'	'	'
Cash and equivalents	0	0	'	0	0
Accounts receivable, net	0	0	'	'	'
Costs and estimated earnings in excess of billings	0	0	'	'	'
Inventories	0	0	'	'	'
Deferred tax assets, net	2,434	2,285	'	'	'
Income taxes receivable	2,231	2,516	'	'	'
Other current assets	8,446	2,563	'	'	'
Total current assets	13,111	7,364	'	'	'
PROPERTY AND EQUIPMENT, NET	14,666	13,779	'	'	'
GOODWILL	0	0	'	'	'
INTANGIBLE ASSETS, NET	0	0	'	'	'
DEFERRED TAX ASSETS, NET NON-CURRENT	84	691	'	'	'
INVESTMENT IN SUBSIDIARIES	788,300	769,639	'	'	'
INTERCOMPANY RECEIVABLES	0	0	'	'	'
OTHER	8,883	8,739	'	'	'
TOTAL NON-CURRENT ASSETS	811,933	792,848	'	'	'
TOTAL ASSETS	825,044	800,212	'	'	'
CURRENT LIABILITIES:	'	'	'	'	'
Accounts payable	3,639	2,042	'	'	'
Current portion of debt	8,594	7,813	'	'	'
Billings in excess of costs and estimated earnings	0	0	'	'	'
Accrued insurance claims	618	619	'	'	'
Deferred Tax Liabilities, Net, Current	0	0	'	'	'
Other accrued liabilities	15,986	9,151	'	'	'
Total current liabilities	28,837	19,625	'	'	'
Long-term debt	194,719	163,062	'	'	'
ACCRUED INSURANCE CLAIMS	738	726	'	'	'
DEFERRED TAX LIABILITIES, NET NON-CURRENT	0	0	'	'	'
INTERCOMPANY PAYABLES	136,610	185,296	'	'	'
OTHER LIABILITIES	3,156	3,142	'	'	'
Total liabilities	364,060	371,851	'	'	'
Total stockholders' equity	460,984	428,361	'	'	'
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	825,044	800,212	'	'	'
Issuer	'	'	'	'	'
CURRENT ASSETS:	'	'	'	'	'
Cash and equivalents	0	0	'	0	0
Accounts receivable, net	0	0	'	'	'
Costs and estimated earnings in excess of billings	0	0	'	'	'
Inventories	0	0	'	'	'
Deferred tax assets, net	0	0	'	'	'
Income taxes receivable	0	0	'	'	'
Other current assets	55	10	'	'	'
Total current assets	55	10	'	'	'
PROPERTY AND EQUIPMENT, NET	0	0	'	'	'
GOODWILL	0	0	'	'	'
INTANGIBLE ASSETS, NET	0	0	'	'	'
DEFERRED TAX ASSETS, NET NON-CURRENT	0	0	'	'	'
INVESTMENT IN SUBSIDIARIES	1,494,353	1,472,559	'	'	'
INTERCOMPANY RECEIVABLES	0	0	'	'	'
OTHER	6,153	6,331	'	'	'
TOTAL NON-CURRENT ASSETS	1,500,506	1,478,890	'	'	'
TOTAL ASSETS	1,500,561	1,478,900	'	'	'
CURRENT LIABILITIES:	'	'	'	'	'
Accounts payable	0	0	'	'	'
Current portion of debt	0	0	'	'	'
Billings in excess of costs and estimated earnings	0	0	'	'	'
Accrued insurance claims	0	0	'	'	'
Deferred Tax Liabilities, Net, Current	155	155	'	'	'
Other accrued liabilities	5,560	1,321	'	'	'
Total current liabilities	5,715	1,476	'	'	'
Long-term debt	281,016	281,107	'	'	'
ACCRUED INSURANCE CLAIMS	0	0	'	'	'
DEFERRED TAX LIABILITIES, NET NON-CURRENT	427	427	'	'	'
INTERCOMPANY PAYABLES	425,103	426,251	'	'	'
OTHER LIABILITIES	0	0	'	'	'
Total liabilities	712,261	709,261	'	'	'
Total stockholders' equity	788,300	769,639	'	'	'
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	1,500,561	1,478,900	'	'	'
Subsidiary Guarantors	'	'	'	'	'
CURRENT ASSETS:	'	'	'	'	'
Cash and equivalents	13,631	18,166	'	54,096	51,563
Accounts receivable, net	303,178	249,533	'	'	'
Costs and estimated earnings in excess of billings	218,997	202,651	'	'	'
Inventories	39,273	35,999	'	'	'
Deferred tax assets, net	16,573	15,873	'	'	'
Income taxes receivable	0	0	'	'	'
Other current assets	7,189	7,583	'	'	'
Total current assets	598,841	529,805	'	'	'
PROPERTY AND EQUIPMENT, NET	173,353	173,254	'	'	'
GOODWILL	267,810	267,810	'	'	'
INTANGIBLE ASSETS, NET	120,021	125,275	'	'	'
DEFERRED TAX ASSETS, NET NON-CURRENT	4,224	4,104	'	'	'
INVESTMENT IN SUBSIDIARIES	0	0	'	'	'
INTERCOMPANY RECEIVABLES	571,013	618,524	'	'	'
OTHER	2,073	2,133	'	'	'
TOTAL NON-CURRENT ASSETS	1,138,494	1,191,100	'	'	'
TOTAL ASSETS	1,737,335	1,720,905	'	'	'
CURRENT LIABILITIES:	'	'	'	'	'
Accounts payable	64,623	75,012	'	'	'
Current portion of debt	0	0	'	'	'
Billings in excess of costs and estimated earnings	13,347	13,788	'	'	'
Accrued insurance claims	30,829	28,342	'	'	'
Deferred Tax Liabilities, Net, Current	89	140	'	'	'
Other accrued liabilities	56,596	59,374	'	'	'
Total current liabilities	165,484	176,656	'	'	'
Long-term debt	0	0	'	'	'
ACCRUED INSURANCE CLAIMS	29,290	26,426	'	'	'
DEFERRED TAX LIABILITIES, NET NON-CURRENT	53,119	52,436	'	'	'
INTERCOMPANY PAYABLES	0	0	'	'	'
OTHER LIABILITIES	2,832	2,855	'	'	'
Total liabilities	250,725	258,373	'	'	'
Total stockholders' equity	1,486,610	1,462,532	'	'	'
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	1,737,335	1,720,905	'	'	'
Non-Guarantor Subsidiaries	'	'	'	'	'
CURRENT ASSETS:	'	'	'	'	'
Cash and equivalents	763	441	'	630	1,018
Accounts receivable, net	1,234	2,669	'	'	'
Costs and estimated earnings in excess of billings	2,113	1,698	'	'	'
Inventories	0	0	'	'	'
Deferred tax assets, net	96	121	'	'	'
Income taxes receivable	0	0	'	'	'
Other current assets	502	452	'	'	'
Total current assets	4,708	5,381	'	'	'
PROPERTY AND EQUIPMENT, NET	15,897	15,670	'	'	'
GOODWILL	0	0	'	'	'
INTANGIBLE ASSETS, NET	0	0	'	'	'
DEFERRED TAX ASSETS, NET NON-CURRENT	162	66	'	'	'
INVESTMENT IN SUBSIDIARIES	0	0	'	'	'
INTERCOMPANY RECEIVABLES	0	0	'	'	'
OTHER	90	83	'	'	'
TOTAL NON-CURRENT ASSETS	16,149	15,819	'	'	'
TOTAL ASSETS	20,857	21,200	'	'	'
CURRENT LIABILITIES:	'	'	'	'	'
Accounts payable	664	900	'	'	'
Current portion of debt	0	0	'	'	'
Billings in excess of costs and estimated earnings	0	0	'	'	'
Accrued insurance claims	81	108	'	'	'
Deferred Tax Liabilities, Net, Current	1,141	1,131	'	'	'
Other accrued liabilities	1,311	1,345	'	'	'
Total current liabilities	3,197	3,484	'	'	'
Long-term debt	0	0	'	'	'
ACCRUED INSURANCE CLAIMS	86	98	'	'	'
DEFERRED TAX LIABILITIES, NET NON-CURRENT	527	610	'	'	'
INTERCOMPANY PAYABLES	9,300	6,977	'	'	'
OTHER LIABILITIES	4	4	'	'	'
Total liabilities	13,114	11,173	'	'	'
Total stockholders' equity	7,743	10,027	'	'	'
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	20,857	21,200	'	'	'
Eliminations and Reclassifications	'	'	'	'	'
CURRENT ASSETS:	'	'	'	'	'
Cash and equivalents	0	0	'	0	0
Accounts receivable, net	0	0	'	'	'
Costs and estimated earnings in excess of billings	0	0	'	'	'
Inventories	0	0	'	'	'
Deferred tax assets, net	-1,385	-1,426	'	'	'
Income taxes receivable	0	0	'	'	'
Other current assets	0	0	'	'	'
Total current assets	-1,385	-1,426	'	'	'
PROPERTY AND EQUIPMENT, NET	0	0	'	'	'
GOODWILL	0	0	'	'	'
INTANGIBLE ASSETS, NET	0	0	'	'	'
DEFERRED TAX ASSETS, NET NON-CURRENT	-4,470	-4,861	'	'	'
INVESTMENT IN SUBSIDIARIES	-2,282,653	-2,242,198	'	'	'
INTERCOMPANY RECEIVABLES	-571,013	-618,524	'	'	'
OTHER	0	0	'	'	'
TOTAL NON-CURRENT ASSETS	-2,858,136	-2,865,583	'	'	'
TOTAL ASSETS	-2,859,521	-2,867,009	'	'	'
CURRENT LIABILITIES:	'	'	'	'	'
Accounts payable	0	0	'	'	'
Current portion of debt	0	0	'	'	'
Billings in excess of costs and estimated earnings	0	0	'	'	'
Accrued insurance claims	0	0	'	'	'
Deferred Tax Liabilities, Net, Current	-1,385	-1,426	'	'	'
Other accrued liabilities	0	0	'	'	'
Total current liabilities	-1,385	-1,426	'	'	'
Long-term debt	0	0	'	'	'
ACCRUED INSURANCE CLAIMS	0	0	'	'	'
DEFERRED TAX LIABILITIES, NET NON-CURRENT	-4,470	-4,861	'	'	'
INTERCOMPANY PAYABLES	-571,013	-618,524	'	'	'
OTHER LIABILITIES	0	0	'	'	'
Total liabilities	-576,868	-624,811	'	'	'
Total stockholders' equity	-2,282,653	-2,242,198	'	'	'
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	($2,859,521)	($2,867,009)	'	'	'

Supplemental_Consolidating_Fin4

Supplemental Consolidating Financial Statements - Income Statement (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012
Revenues [Abstract]	'	'
Contract revenues	$512,720	$323,286
EXPENSES:	'	'
Cost of earned revenues, excluding depreciation and amortization	410,119	257,066
General and administrative	43,075	28,824
Depreciation and amortization	23,552	15,311
Intercompany charges (income), net	0	0
Total	476,746	301,201
Interest income (expense), net	-6,886	-4,197
Other income, net	2,012	1,614
INCOME BEFORE INCOME TAXES	31,100	19,502
PROVISION (BENEFIT) FOR INCOME TAXES	12,440	7,641
NET INCOME (LOSS) BEFORE EQUITY IN EARNINGS OF SUBSIDIARIES	18,660	11,861
EQUITY IN EARNINGS OF SUBSIDIARIES	0	0
NET INCOME	18,660	11,861
Foreign currency translation gain	-60	2
COMPREHENSIVE INCOME (LOSS)	18,600	11,863
Parent	'	'
Revenues [Abstract]	'	'
Contract revenues	0	0
EXPENSES:	'	'
Cost of earned revenues, excluding depreciation and amortization	0	0
General and administrative	11,237	8,409
Depreciation and amortization	854	740
Intercompany charges (income), net	-13,976	-9,925
Total	-1,885	-776
Interest income (expense), net	-1,888	-776
Other income, net	3	0
INCOME BEFORE INCOME TAXES	0	0
PROVISION (BENEFIT) FOR INCOME TAXES	0	0
NET INCOME (LOSS) BEFORE EQUITY IN EARNINGS OF SUBSIDIARIES	0	0
EQUITY IN EARNINGS OF SUBSIDIARIES	18,660	11,861
NET INCOME	18,660	11,861
Foreign currency translation gain	-60	2
COMPREHENSIVE INCOME (LOSS)	18,600	11,863
Issuer	'	'
Revenues [Abstract]	'	'
Contract revenues	0	0
EXPENSES:	'	'
Cost of earned revenues, excluding depreciation and amortization	0	0
General and administrative	226	146
Depreciation and amortization	0	0
Intercompany charges (income), net	0	0
Total	226	146
Interest income (expense), net	-4,994	-3,420
Other income, net	0	0
INCOME BEFORE INCOME TAXES	-5,220	-3,566
PROVISION (BENEFIT) FOR INCOME TAXES	-2,087	-1,397
NET INCOME (LOSS) BEFORE EQUITY IN EARNINGS OF SUBSIDIARIES	-3,133	-2,169
EQUITY IN EARNINGS OF SUBSIDIARIES	21,793	14,030
NET INCOME	18,660	11,861
Foreign currency translation gain	-60	2
COMPREHENSIVE INCOME (LOSS)	18,600	11,863
Subsidiary Guarantors	'	'
Revenues [Abstract]	'	'
Contract revenues	509,430	319,025
EXPENSES:	'	'
Cost of earned revenues, excluding depreciation and amortization	407,695	253,544
General and administrative	28,945	17,616
Depreciation and amortization	21,621	13,286
Intercompany charges (income), net	14,110	10,272
Total	472,371	294,718
Interest income (expense), net	-4	-1
Other income, net	1,945	1,565
INCOME BEFORE INCOME TAXES	39,000	25,871
PROVISION (BENEFIT) FOR INCOME TAXES	15,600	10,136
NET INCOME (LOSS) BEFORE EQUITY IN EARNINGS OF SUBSIDIARIES	23,400	15,735
EQUITY IN EARNINGS OF SUBSIDIARIES	0	0
NET INCOME	23,400	15,735
Foreign currency translation gain	0	0
COMPREHENSIVE INCOME (LOSS)	23,400	15,735
Non-Guarantor Subsidiaries	'	'
Revenues [Abstract]	'	'
Contract revenues	3,290	4,261
EXPENSES:	'	'
Cost of earned revenues, excluding depreciation and amortization	2,424	3,522
General and administrative	2,667	2,653
Depreciation and amortization	1,077	1,285
Intercompany charges (income), net	-134	-347
Total	6,034	7,113
Interest income (expense), net	0	0
Other income, net	64	49
INCOME BEFORE INCOME TAXES	-2,680	-2,803
PROVISION (BENEFIT) FOR INCOME TAXES	-1,073	-1,098
NET INCOME (LOSS) BEFORE EQUITY IN EARNINGS OF SUBSIDIARIES	-1,607	-1,705
EQUITY IN EARNINGS OF SUBSIDIARIES	0	0
NET INCOME	-1,607	-1,705
Foreign currency translation gain	-60	2
COMPREHENSIVE INCOME (LOSS)	-1,667	-1,703
Eliminations and Reclassifications	'	'
Revenues [Abstract]	'	'
Contract revenues	0	0
EXPENSES:	'	'
Cost of earned revenues, excluding depreciation and amortization	0	0
General and administrative	0	0
Depreciation and amortization	0	0
Intercompany charges (income), net	0	0
Total	0	0
Interest income (expense), net	0	0
Other income, net	0	0
INCOME BEFORE INCOME TAXES	0	0
PROVISION (BENEFIT) FOR INCOME TAXES	0	0
NET INCOME (LOSS) BEFORE EQUITY IN EARNINGS OF SUBSIDIARIES	0	0
EQUITY IN EARNINGS OF SUBSIDIARIES	-40,453	-25,891
NET INCOME	-40,453	-25,891
Foreign currency translation gain	120	-4
COMPREHENSIVE INCOME (LOSS)	($40,333)	($25,895)

Supplemental_Consolidating_Fin5

Supplemental Consolidating Financial Statements - Cash Flows (Details) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Oct. 26, 2013	Oct. 27, 2012	Jul. 27, 2013	Jul. 28, 2012
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net cash provided by operating activities	($18,693)	$27,716	'	'
INVESTING ACTIVITIES:	'	'	'	'
Capital expenditures	-30,288	-12,523	'	'
Proceeds from sale of assets	2,465	2,006	'	'
Changes in restricted cash	-305	0	'	'
Net cash used in investing activities	-28,128	-10,517	'	'
FINANCING ACTIVITIES:	'	'	'	'
Proceeds from borrowings on senior Credit Agreement	164,000	0	'	'
Principal payments on Senior Credit Agreement	-131,563	0	'	'
Repurchases of common stock	0	-15,203	-15,203	-12,960
Exercise of stock options and other	10,124	166	'	'
Restricted stock tax withholdings	-609	-62	'	'
Excess tax benefit from share-based awards	656	64	'	'
Principal payments on capital lease obligations	0	-19	'	'
Intercompany funding	0	0	'	'
Net cash provided by financing activities	42,608	-15,054	'	'
Net (decrease) increase in cash and equivalents	-4,213	2,145	'	'
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	18,607	52,581	52,581	'
CASH AND EQUIVALENTS AT END OF PERIOD	14,394	54,726	18,607	52,581
Parent	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net cash provided by operating activities	-2,905	-2,961	'	'
INVESTING ACTIVITIES:	'	'	'	'
Capital expenditures	-1,680	-2,026	'	'
Proceeds from sale of assets	0	0	'	'
Changes in restricted cash	-305	'	'	'
Net cash used in investing activities	-1,985	-2,026	'	'
FINANCING ACTIVITIES:	'	'	'	'
Proceeds from borrowings on senior Credit Agreement	164,000	'	'	'
Principal payments on Senior Credit Agreement	-131,563	'	'	'
Repurchases of common stock	'	-15,203	'	'
Exercise of stock options and other	10,124	166	'	'
Restricted stock tax withholdings	-609	-62	'	'
Excess tax benefit from share-based awards	656	64	'	'
Principal payments on capital lease obligations	'	0	'	'
Intercompany funding	-37,718	20,022	'	'
Net cash provided by financing activities	4,890	4,987	'	'
Net (decrease) increase in cash and equivalents	0	0	'	'
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	0	0	0	'
CASH AND EQUIVALENTS AT END OF PERIOD	0	0	'	'
Issuer	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net cash provided by operating activities	1,835	1,260	'	'
INVESTING ACTIVITIES:	'	'	'	'
Capital expenditures	0	0	'	'
Proceeds from sale of assets	0	0	'	'
Changes in restricted cash	0	'	'	'
Net cash used in investing activities	0	0	'	'
FINANCING ACTIVITIES:	'	'	'	'
Proceeds from borrowings on senior Credit Agreement	0	'	'	'
Principal payments on Senior Credit Agreement	0	'	'	'
Repurchases of common stock	'	0	'	'
Exercise of stock options and other	0	0	'	'
Restricted stock tax withholdings	0	0	'	'
Excess tax benefit from share-based awards	0	0	'	'
Principal payments on capital lease obligations	'	0	'	'
Intercompany funding	-1,835	-1,260	'	'
Net cash provided by financing activities	-1,835	-1,260	'	'
Net (decrease) increase in cash and equivalents	0	0	'	'
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	0	0	0	'
CASH AND EQUIVALENTS AT END OF PERIOD	0	0	'	'
Subsidiary Guarantors	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net cash provided by operating activities	-17,351	30,527	'	'
INVESTING ACTIVITIES:	'	'	'	'
Capital expenditures	-27,042	-9,196	'	'
Proceeds from sale of assets	2,422	1,958	'	'
Changes in restricted cash	0	'	'	'
Net cash used in investing activities	-24,620	-7,238	'	'
FINANCING ACTIVITIES:	'	'	'	'
Proceeds from borrowings on senior Credit Agreement	0	'	'	'
Principal payments on Senior Credit Agreement	0	'	'	'
Repurchases of common stock	'	0	'	'
Exercise of stock options and other	0	0	'	'
Restricted stock tax withholdings	0	0	'	'
Excess tax benefit from share-based awards	0	0	'	'
Principal payments on capital lease obligations	'	-19	'	'
Intercompany funding	37,436	-20,737	'	'
Net cash provided by financing activities	37,436	-20,756	'	'
Net (decrease) increase in cash and equivalents	-4,535	2,533	'	'
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	18,166	51,563	51,563	'
CASH AND EQUIVALENTS AT END OF PERIOD	13,631	54,096	'	'
Non-Guarantor Subsidiaries	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net cash provided by operating activities	-272	-1,110	'	'
INVESTING ACTIVITIES:	'	'	'	'
Capital expenditures	-1,566	-1,301	'	'
Proceeds from sale of assets	43	48	'	'
Changes in restricted cash	0	'	'	'
Net cash used in investing activities	-1,523	-1,253	'	'
FINANCING ACTIVITIES:	'	'	'	'
Proceeds from borrowings on senior Credit Agreement	0	'	'	'
Principal payments on Senior Credit Agreement	0	'	'	'
Repurchases of common stock	'	0	'	'
Exercise of stock options and other	0	0	'	'
Restricted stock tax withholdings	0	0	'	'
Excess tax benefit from share-based awards	0	0	'	'
Principal payments on capital lease obligations	'	0	'	'
Intercompany funding	2,117	1,975	'	'
Net cash provided by financing activities	2,117	1,975	'	'
Net (decrease) increase in cash and equivalents	322	-388	'	'
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	441	1,018	1,018	'
CASH AND EQUIVALENTS AT END OF PERIOD	763	630	'	'
Eliminations and Reclassifications	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Net cash provided by operating activities	0	0	'	'
INVESTING ACTIVITIES:	'	'	'	'
Capital expenditures	0	0	'	'
Proceeds from sale of assets	0	0	'	'
Changes in restricted cash	0	'	'	'
Net cash used in investing activities	0	0	'	'
FINANCING ACTIVITIES:	'	'	'	'
Proceeds from borrowings on senior Credit Agreement	0	'	'	'
Principal payments on Senior Credit Agreement	0	'	'	'
Repurchases of common stock	'	0	'	'
Exercise of stock options and other	0	0	'	'
Restricted stock tax withholdings	0	0	'	'
Excess tax benefit from share-based awards	0	0	'	'
Principal payments on capital lease obligations	'	0	'	'
Intercompany funding	0	0	'	'
Net cash provided by financing activities	0	0	'	'
Net (decrease) increase in cash and equivalents	0	0	'	'
CASH AND EQUIVALENTS AT BEGINNING OF PERIOD	0	0	0	'
CASH AND EQUIVALENTS AT END OF PERIOD	$0	$0	'	'