Acquisition of NTELOS Holdings Corp. and Exchange with Sprint - Schedule of Goodwill Activity (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 144,001
Ending balance	145,256
Ntelos Holding, Corp
Goodwill [Roll Forward]
Beginning balance	144,001
Purchase Accounting Adjustments	(1,255)
Ending balance	145,256
Wireline | Ntelos Holding, Corp
Goodwill [Roll Forward]
Beginning balance	10
Purchase Accounting Adjustments	0
Ending balance	10
Cable | Ntelos Holding, Corp
Goodwill [Roll Forward]
Beginning balance	104
Purchase Accounting Adjustments	0
Ending balance	104
Wireless | Ntelos Holding, Corp
Goodwill [Roll Forward]
Beginning balance	143,887
Purchase Accounting Adjustments	(1,255)
Ending balance	$ 145,142