Intangible Assets, Net (Tables)

12 Months Ended

Dec. 31, 2013

Intangible Assets, Net [Abstract]

Gross And Net Carrying Amounts For Each Major Class Of Intangible Assets

	As of December 31, 2013						As of December 31, 2012
	Gross carrying		Accumulated		Net book		Gross carrying		Accumulated		Net book
	amount		amortization		value		amount		amortization		value
	(in thousands)
Current contract intangibles	$	3,154,616	$	(649,861)	$	2,504,755	$	2,744,968	$	(462,016)	$	2,282,952
Network location intangibles		1,209,142		(326,699)		882,443		1,101,566		(250,385)		851,181
Intangible assets, net	$	4,363,758	$	(976,560)	$	3,387,198	$	3,846,534	$	(712,401)	$	3,134,133

Estimated Future Amortization Expense

For the year ended December 31,	(in thousands)
2014	$	290,716
2015		290,716
2016		290,716
2017		290,716
2018		290,716
Thereafter		1,933,618
Total	$	3,387,198