Acquisition of NTELOS Holdings Corp. and Exchange with Sprint - Intangible Assets Resulting from Acquisition (Details) - NTELOS Holdings Corp. [Member] - USD ($) $ in Thousands		3 Months Ended
	May 06, 2016	Sep. 30, 2016
Affiliate Contract Agreement [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill [Abstract]
Useful Life	14 years	14 years
Basis	$ 287,800
Additional Customer Based Contract Rights [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill [Abstract]
Basis	$ 113,761
Additional Customer Based Contract Rights [Member] | Minimum [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill [Abstract]
Useful Life	4 years
Additional Customer Based Contract Rights [Member] | Maximum [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill [Abstract]
Useful Life	10 years
Contract Based Intangible Assets [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill [Abstract]
Basis	$ 11,000	$ 11,000
Contract Based Intangible Assets [Member] | Minimum [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill [Abstract]
Useful Life	3 years
Contract Based Intangible Assets [Member] | Maximum [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill [Abstract]
Useful Life	19 years