Commitments And Contingencies (Tables)

12 Months Ended

Dec. 31, 2011

Commitments And Contingencies [Abstract]

Capital Leases For Vehicles Included In Property And Equipment

	As of December 31, 2011			As of December 31, 2010
	(in thousands)
Vehicles	$	5,546		$	3,110
Less: accumulated depreciation		(1,932	)		(1,241	)
Vehicles, net	$	3,614		$	1,869

Annual Minimum Lease Payments

For the year ended December 31,	Capital Leases			Operating Leases
2012	$	1,124		$	70,052
2013		989			69,917
2014		808			70,588
2015		440			70,866
2016		—			70,371
Thereafter		—			1,319,419
Total minimum lease payments		3,361		$	1,671,213
Less: amount representing interest		(252	)
Present value of future payments		3,109
Less: current obligations		(994	)
Long-term obligations	$	2,115

Annual Minimum Tower Lease Income

For the year ended December 31,	(in thousands)
2012	$	601,623
2013		533,969
2014		466,340
2015		379,738
2016		281,718
Thereafter		1,205,482
Total	$	3,468,870