Basis of Presentation (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of revenue	$ (5,320)	$ (5,389)	$ (11,425)	$ (9,845)
Sales and marketing	$ 2,384	2,532	$ 6,001	5,026
Reclassification of certain sales taxes
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of revenue		520		466
Sales and marketing		$ 520		$ 466