Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill

The changes in the carrying amount of goodwill for the nine months endedSeptember 30, 2013 are as follows (amounts in thousands):

	Total		Business		Consumer
Balance as of December 31, 2012	$	32,645	$	24,621	$	8,024
Adjustments to goodwill:
Engage acquisition (see Note 8)	79		79		—
Balance as of September 30, 2013	$	32,724	$	24,700	$	8,024

The changes in the carrying amount of goodwill for the year ended December 31, 2012 are as follows (amounts in thousands):

	Total		Business		Consumer
Balance as of December 31, 2011	$	24,090	$	16,066	$	8,024
Adjustments to goodwill:
Engage acquisition	6,073		6,073		—
LookIO acquisition	2,405		2,405		—
Contingent earnout payments (see Note 8)	77		77		—
Balance as of December 31, 2012	$	32,645	$	24,621	$	8,024

Summary of Intangible Assets

Intangible assets are summarized as follows (see Note 8) (amounts in thousands):

Acquired Intangible Assets

	As of September 30, 2013
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted Average Amortization Period
Amortizing intangible assets:
Technology	$	18,533	$	(6,808	)	$	11,725	3.8 years
Customer relationships	5,061		(2,982		)	2,079		3.5 years
Trade names	725		(716		)	9		2.7 years
Non-compete agreements	486		(478		)	8		1.2 years
Patents	475		(178		)	297		11.0 years
Other	285		(247		)	38		3.0 years
Total	$	25,565	$	(11,409	)	$	14,156

	As of December 31, 2012
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Weighted Average Amortization Period
Amortizing intangible assets:
Technology	$	18,533	$	(5,904	)	$	12,629	3.8 years
Customer relationships	5,061		(2,485		)	2,576		3.5 years
Trade names	725		(644		)	81		2.7 years
Non-compete agreements	486		(421		)	65		1.2 years
Patents	475		(145		)	330		11.0 years
Other	235		(235		)	—		3.0 years
Total	$	25,515	$	(9,834	)	$	15,681

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

Estimated amortization expense for the next five years are as follows (amounts in thousands):  

	Estimated Amortization Expense
2013	$	1,078
2014	4,133
2015	3,771
2016	3,316
2017	1,746
Thereafter	112
Total	$	14,156