Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2015

Goodwill And Intangible Assets Disclosure [Abstract]

Changes in Carrying Value of Goodwill

The change in the carrying value of goodwill is as follows (in thousands):

	Goodwill
Balance as of December 31, 2014	$	29,277
Foreign currency translation		(15	)
Balance as of September 30, 2015	$	29,262

Intangible Assets

Intangible assets consist of the following (in thousands):

	September 30, 2015 Gross		Accumulated Amortization			Foreign Currency Translation		September 30, 2015 Net		Weighted Average Amortization Period (Years)
Customer relationships	$	7,164	$	(2,959	)	$	13	$	4,218	4
Domain names		5,252		(3,264	)		—		1,988	4
Developed technologies		4,117		(1,405	)		—		2,712	4
Patents		1,050		(657	)		—		393	6
Vendor relationships		890		(389	)		—		501	2
Trade names		167		(142	)		2		27	1
	$	18,640	$	(8,816	)	$	15	$	9,839	4

	December 31, 2014 Gross		Accumulated Amortization			Foreign Currency Translation		December 31, 2014 Net		Weighted Average Amortization Period (Years)
Customer relationships	$	7,164	$	(1,978	)	$	21	$	5,207	4
Domain names		4,968		(2,836	)		—		2,132	4
Developed technologies		4,117		(834	)		—		3,283	5
Patents		1,050		(570	)		—		480	6
Vendor relationships		890		(223	)		—		667	3
Trade names		167		(121	)		3		49	2
	$	18,356	$	(6,562	)	$	24	$	11,818	4

Estimated Amortization of Intangible Assets

Estimated future amortization expense of intangible assets as of September 30, 2015 is as follows (in thousands):

	Total
2015, remaining three months	$	756
2016		2,889
2017		2,576
2018		2,299
2019		1,213
2020 and beyond		106
Total estimated amortization expense	$	9,839