Description of Business and Summary of Significant Accounting Policies - Changes in the Carrying Amount of Goodwill (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 10
Ending balance	145,256
Wireless [Member]
Goodwill [Roll Forward]
Beginning balance	10
Colane acquisition [Member] | Cable [Member]
Goodwill [Roll Forward]
Acquired	104
Ntelos Holding, Corp [Member]
Goodwill [Roll Forward]
Ending balance	145,142
Ntelos Holding, Corp [Member] | Wireless [Member]
Goodwill [Roll Forward]
Acquired	$ 145,142