Acquisition of NTELOS Holdings Corp. and Exchange with Sprint - Narrative (Details) - Ntelos Holding, Corp - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	May 06, 2016
Business Acquisition [Line Items]
Consideration transferred, net of cash		$ 667,800
Purchase Accounting Adjustments	$ (1,255)
Integration related costs	7,100
Cost of Sales
Business Acquisition [Line Items]
Integration related costs	100
Selling, General and Administrative Expenses
Business Acquisition [Line Items]
Integration related costs	$ 2,500

Business Combination, Consideration Transferred, Net of Cash Acquired

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- Definition

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.

+ References

No definition available.

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- Definition

Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs.

+ References

No definition available.

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=73531572&loc=d3e961-128460

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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