Property and Equipment, Net - Schedule of Property and Equipment (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 10,645	$ 9,433
Less: Accumulated depreciation and amortization	(4,204)	(3,801)
Property and equipment, net	6,441	5,632
Furniture, Fixtures and Office Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	760	756
Hardware and Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	3,839	3,388
Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	5,141	4,384
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 905	$ 905