Goodwill and Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Finite Lived Intangible Assets [Line Items]
Accumulated amortization	$ (1,243)	$ (959)
Total	$ 471	444
Domain names
Finite Lived Intangible Assets [Line Items]
Intangible assets, Average Remaining Useful Life	17 months
Intangible assets, gross	$ 1,268	1,268
Tradenames and trademarks
Finite Lived Intangible Assets [Line Items]
Intangible assets, Average Remaining Useful Life	7 months
Intangible assets, gross	$ 109	109
Non-compete agreements
Finite Lived Intangible Assets [Line Items]
Intangible assets, Average Remaining Useful Life	6 months
Intangible assets, gross	$ 26	$ 26
Software
Finite Lived Intangible Assets [Line Items]
Intangible assets, Average Remaining Useful Life	32 months
Intangible assets, gross	$ 311