Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Finite-Lived Intangible Assets [Line Items]
Capitalized Computer Software, Additions	$ 77	$ 72	$ 161	$ 197
Capitalized Computer Software, Amortization	(139)	(66)	(279)	(127)
taxes billed to customers in revenues	393	415	796	846
taxes remitted to taxing authorities in our operating costs, network and infrastructure	$ 372	$ 392	$ 764	$ 801
Minimum [Member] | Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			12 months
Maximum [Member] | Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			24 months