Commitments and Contingencies (Details) (USD $)			6 Months Ended
	Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2011 DOJ Inquiry [Member]	Jun. 30, 2011 Wholesale Agreement With Sprint [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value			$ 2,700,000
Loss Contingency Damages Sought Amount Per Mailing			11,000
Extension Periods of Agreement (years)				1
Advance Notice Required For Contract Termination (days)				180
Initial Term of Agreement (years)				5
Total Minimum Revenue Under Agreement				300,000,000
Amount of Service Revenue Which Can be Credited Against Minimum Revenue Requirement				100,000,000
Total Minimum Revenue Under Agreement in 2011				20,000,000
Total Minimum Revenue Under Agreement in 2012				75,000,000
Total Minimum Revenue Under Agreement in 2013				80,000,000
Total Minimum Revenue Under Agreement in 2014				75,000,000
Total Minimum Revenue Under Agreement in 2015				50,000,000
Minimum Revenues of Service Provider in Change of Control Transaction				500,000,000
Percentage of Minimum Revenue Requirement to be Paid After Change of Control in 2011				40.00%
Percentage of Minimum Revenue Requirement to be Paid After Change of Control in 2012				30.00%
Percentage of Minimum Revenue Requirement to be Paid After Change of Control in 2013				20.00%
Percentage of Minimum Revenue Requirement to be Paid After Change of Control in 2014				10.00%
Percentage of Minimum Revenue Requirement to be Paid After Change of Control in 2015				10.00%
Time Period for Contract Termination With Metro PCS (days)				60
Total Minimum Revenue Upon Change of Control With Metro PCS				350,000,000
Purchase Commitment, Remaining Minimum Amount Committed	$ 222,800,000	$ 218,200,000