Goodwill and Other Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Non-amortizing intangibles:	$ 64,431	$ 64,431
Gross Carrying Amount	455,601	449,384
Accumulated Amortization	(83,376)	(59,283)
Net	372,225	390,101
Total intangible assets, gross	520,032	513,815
Intangible assets, net	436,656	454,532
Affiliate contract expansion
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	287,102	284,102
Accumulated Amortization	(24,351)	(14,030)
Net	262,751	270,072
Acquired subscribers – wireless
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	123,055	120,855
Accumulated Amortization	(31,258)	(18,738)
Net	91,797	102,117
Favorable leases - wireless
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	16,950	16,950
Accumulated Amortization	(1,955)	(1,130)
Net	14,995	15,820
Acquired subscribers – cable
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	25,265	25,265
Accumulated Amortization	(24,974)	(24,631)
Net	291	634
Other intangibles
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,229	2,212
Accumulated Amortization	(838)	(754)
Net	2,391	1,458
Cable franchise rights
Finite-Lived Intangible Assets [Line Items]
Non-amortizing intangibles:	64,334	64,334
Railroad crossing rights
Finite-Lived Intangible Assets [Line Items]
Non-amortizing intangibles:	$ 97	$ 97