Intangible Assets (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2015 USD ($)
Licenses
Total winning bid	$ 338,300
Licenses
Licenses
Balance, beginning of period	1,453,574
Acquisitions	345,656	[1]
Exchanges	43,485	[2]
Other	1,482
Balance, end of period	$ 1,844,197

[1] Amount includes payments totaling $338.3 million made by Advantage Spectrum to the FCC for licenses in which it was the provisional winning bidder in Auction 97. See Note 6 — Acquisitions, Divestitures and Exchanges, and Note 10 — Variable Interest Entities for further information.

[2] Amount represents licenses received in the March 2015 PCS license exchange. See Note 6 — Acquisitions, Divestitures and Exchanges for further information. Licenses disposed of in this exchange and the exchange that closed in July 2015 were previously removed from the Licenses balance and reflected in Assets held for sale in the Consolidated Balance Sheet as of December 31, 2014.