Geographic Information - Summary of Long-Lived Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets, net	$ 732	$ 479
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets, net	715	456
International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets, net	$ 17	$ 23