Long-Term Debt and Revolving Lines of Credit - Narrative (Details)		1 Months Ended	12 Months Ended
	Dec. 18, 2015 USD ($) facility	Jun. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Debt Instrument [Line Items]
Number of credit facilities | facility	3
Total debt, net of unamortized loan fees			$ 829,265,000	$ 199,661,000
Unamortized loan fees			$ 18,610,000	1,589,000
Weighted average interest rate			3.83%
Variable swap rate	50.00%
Total leverage ratio through December 30, 2019	3.25
Total leverage ratio thereafter	3.00
Debt service coverage ratio, actual			0.0423
Minimum liquidity balance	$ 25,000,000		$ 25,000,000
Derivative asset, fair value			11,200,000	$ 688,000
Accrued in anticipation of early distribution of patronage credit			$ 2,200,000
Percentage of patronage credit paid in cash			75.00%
Percentage of patronage credit paid in shares			25.00%
London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Fixed interest rate	1.16%
Maximum [Member]
Debt Instrument [Line Items]
Total leverage ratio from closing date through December 30, 2018	3.75
Minimum [Member]
Debt Instrument [Line Items]
Debt service coverage ratio, actual	2.00
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Term of credit facility	5 years
Maximum borrowing capacity	$ 75,000,000
Proceeds from line of credit			$ 0
Incremental Term Loan Facility [Member]
Debt Instrument [Line Items]
Number of credit facilities | facility	1
Maximum borrowing capacity	$ 150,000,000
Term loan A-1 [Member]
Debt Instrument [Line Items]
Term of credit facility	5 years
Maximum borrowing capacity	$ 485,000,000
Quarterly principal payment period one			6,100,000
Quarterly principal payment period two			12,100,000
Quarterly principal payment period three			18,200,000
Remaining principal payment due			260,700,000
Term loan A-1 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	2.75%
Term loan A-1 [Member] | Ntelos Holding, Corp [Member]
Debt Instrument [Line Items]
Line of credit facility amount borrowed	$ 485,000,000
Term loan A-2 [Member]
Debt Instrument [Line Items]
Term of credit facility	7 years
Maximum borrowing capacity	$ 400,000,000
Proceeds from line of credit		$ 50,000,000
Quarterly principal payment period one			10,000,000
Remaining principal payment due			$ 185,000,000
Term loan A-2 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	3.00%
Term loan A-2 [Member] | Ntelos Holding, Corp [Member]
Debt Instrument [Line Items]
Line of credit facility amount borrowed	$ 325,000,000
Term loan A-2 [Member] | Delayed Draw Term Loan [Member]
Debt Instrument [Line Items]
Line of credit facility remaining borrowing capacity	$ 75,000,000