Subsequent Events (Details) (USD $)					6 Months Ended
	Jun. 30, 2011		Jun. 30, 2010		Jun. 30, 2011 TDS Telecom ILEC Acquisition
Subsequent Event [Line Items]
Purchase price	$ 27,372,000	[1]	$ 28,692,000	[1]
Date of acquisition					7/1/2011
Voting stock acquired					100.00%
Acquired entity					OneNeck IT Services Corporation
Cash paid to acquire					$ 95,000,000
Description of acquired entity					OneNeck is a provider of hosted application management and managed IT hosting services to middle market businesses.

[1] Cash amounts paid for acquisitions may differ from the purchase price due to cash acquired in the transactions and the timing of cash payments related to the respective transactions.