Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2015

Intangible Assets, Net (Excluding Goodwill) [Abstract]

Schedule of intangible assets

Intangible assets consisted of the following at September 30, 2015 and December 31, 2014 (in thousands):

	At September 30, 2015
	Gross Carrying Value		Accumulated Amortization			Net Carrying Value
Acquired technology and domain name	$	31,090	$	(13,073	)	$	18,017
Customer relationships	6,300		(3,062		)	3,238
Tradenames	4,900		(1,307		)	3,593
Total	$	42,290	$	(17,442	)	$	24,848

	At December 31, 2014
	Gross Carrying Value		Accumulated Amortization			Net Carrying Value
Acquired technology and domain name	$	31,090	$	(10,788	)	$	20,302
Customer relationships	6,300		(2,491		)	3,809
Tradenames	4,900		(1,062		)	3,838
Total	$	42,290	$	(14,341	)	$	27,949

Amortization expense with respect to intangible assets

Amortization expense with respect to intangible assets at September 30, 2015 for each of the five years through December 31, 2019 and thereafter is as follows (in thousands):

Three months ending December 31, 2015	$	1,033
2016	4,041
2017	3,862
2018	3,861
2019	3,791
Thereafter	8,260
Total amortization expense	$	24,848