Property and Equipment (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 4,351	$ 3,837
Accumulated depreciation and amortization	(2,758)	(2,008)
Property and equipment, net	1,593	1,829
Depreciation	750	664
Software - internally development
Property, Plant and Equipment [Line Items]
Useful Lives (years)	5 years
Property and equipment, gross	2,582	2,177
Amortization of capitalized software	437	330
Software - purchased
Property, Plant and Equipment [Line Items]
Property and equipment, gross	614	592
Computer equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	594	507
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Useful Lives (years)	5 years
Property and equipment, gross	356	356
Leasehold improvements
Property, Plant and Equipment [Line Items]
Useful Lives (years)	7 years
Property and equipment, gross	$ 205	$ 205
Minimum | Software - purchased
Property, Plant and Equipment [Line Items]
Useful Lives (years)	3 years
Minimum | Computer equipment
Property, Plant and Equipment [Line Items]
Useful Lives (years)	3 years
Maximum | Software - purchased
Property, Plant and Equipment [Line Items]
Useful Lives (years)	5 years
Maximum | Computer equipment
Property, Plant and Equipment [Line Items]
Useful Lives (years)	5 years