Property and Equipment, Net - Narrative (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense	$ 911	[1]	$ 1,248	[1]	$ 2,888	[1]	$ 2,517	[1]
Leasehold Improvements [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of property and equipment					5 years
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of property and equipment					5 years
Office and Computer Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of property and equipment					3 years
Office and Computer Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of property and equipment					5 years
Software [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life of property and equipment					3 years

[1] Amounts related to continuing operations are included in the cost of services and selling, general and administrative expense line items of the condensed consolidated statements of operations, while amounts related to discontinued operations are included in the (loss) income from discontinued operations, net of income taxes.