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Acquisitions (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Jul. 30, 2016	Oct. 29, 2016	Oct. 24, 2015
Business Acquisition [Line Items]
Amortization of intangible assets		$ 6,200	$ 4,800
Purchase price allocation adjustments		(1,488)
TelCom Construction, Inc.
Business Acquisition [Line Items]
Payment to acquire business, net of cash acquired			48,800
Goodman Networks, Inc. Wireline Operations
Business Acquisition [Line Items]
Escrow Deposit		22,500
Payment to acquire business, net of cash acquired	$ 107,500
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred	4,700
NextGen Telecom Services Group, Inc.
Business Acquisition [Line Items]
Payment to acquire business, net of cash acquired	$ 5,600
Businesses Acquired, Fiscal 2016
Business Acquisition [Line Items]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual		56,600	29,900
Amortization of intangible assets		2,100	$ 300
Working Capital Adjustment [Member] | Goodman Networks, Inc. Wireline Operations
Business Acquisition [Line Items]
Escrow Deposit		2,500
Indemnification Agreement [Member] | Goodman Networks, Inc. Wireline Operations
Business Acquisition [Line Items]
Escrow Deposit		20,000
Indemnification Portion Subject to Certain Conditions, Not Less Than Twelve Months | Goodman Networks, Inc. Wireline Operations
Business Acquisition [Line Items]
Escrow Deposit		10,000
Indemnification Portion Subject to Seller Satisfaction of Certain Liabilities | Goodman Networks, Inc. Wireline Operations
Business Acquisition [Line Items]
Escrow Deposit		10,000
Seller Liability, Satisfaction Required for Contingent Consideration		$ 31,700

X

- Definition

The amount of liabilities the seller must satisfy to receive the stated amount of contingent consideration.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy.

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- Definition

Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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