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Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Finite-Lived Intangible Assets [Line Items]
Capitalized Computer Software, Additions	$ 126	$ 87	$ 287	$ 284
Capitalized Computer Software, Amortization	(142)	(79)	(421)	(206)
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
Revenues [Member]
Finite-Lived Intangible Assets [Line Items]
Excise and Sales Taxes	347	391	1,143	1,237
Network and Infrastructure Costs [Member]
Finite-Lived Intangible Assets [Line Items]
Excise and Sales Taxes	$ 357	$ 328	$ 1,122	$ 1,129
Software and Software Development Costs [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			3 years
Software and Software Development Costs [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			4 years

For each income statement presented, the amount charged to expense for amortization of capitalized computer software costs.

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- Definition

The amount of excise and sales taxes included in sales and revenues, which are then deducted as a cost of sales. Includes excise taxes, which are applied to specific types of transactions or items (such as gasoline or alcohol); and sales, use and value added taxes, which are applied to a broad class of revenue-producing transactions involving a wide range of goods and services.

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