Goodwill and Intangible Assets

12 Months Ended

Dec. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill

The changes in the carrying amount of goodwill for the year ended December 31, 2020 are as follows (amounts in thousands):


	Business		Consumer		Total
Balance as of December 31, 2019	$	86,963	$	8,024	$	94,987
Adjustments to goodwill:
Foreign exchange adjustments	205		—		205
Balance as of December 31, 2020	$	87,168	$	8,024	$	95,192

The changes in the carrying amount of goodwill for the year ended December 31, 2019 are as follows (amounts in thousands):


	Business		Consumer		Total
Balance as of December 31, 2018	$	87,007	$	8,024	$	95,031
Adjustments to goodwill:
Acquisitions	—		—		—
Foreign exchange adjustments	(44)		—		(44)
Balance as of December 31, 2019	$	86,963	$	8,024	$	94,987

The total accumulated goodwill impairment charges are $23.5 million through December 31, 2020. No impairment was recognized for the years ended December 31, 2020, 2019, and 2018.

Intangible Assets

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


	December 31, 2020
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Weighted Average Amortization Period
Amortizing intangible assets:
Technology	$	30,499	$	(26,818)	$	3,681	5.4 years
Customer relationships	16,981		(13,982)		2,999		8.4 years
Patents	5,076		(908)		4,168		12.5 years
Other	314		(235)		79		2.2 years
Total	$	52,870	$	(41,943)	$	10,927


	December 31, 2019
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Weighted Average Amortization Period
Amortizing intangible assets:
Technology	$	30,413	$	(25,187)	$	5,226	5.3 years
Customer relationships	16,964		(12,958)		4,006		8.4 years
Patents	3,267		(714)		2,553		12.8 years
Other	262		(235)		27		2.7 years
Total	$	50,906	$	(39,094)	$	11,812

Amortization expense is calculated over the estimated useful life of the asset. Aggregate amortization expense for intangible assets was $2.8 million, $2.9 million and $2.8 million for the years ended December 31, 2020, 2019 and 2018, respectively. For the years ended December 31, 2020, 2019 and 2018, a portion of this amortization is included in cost of revenue. Estimated amortization expense for the next five years is as follows (amounts in thousands):


	Estimated Amortization Expense
2021	$	2,611
2022	2,240
2023	959
2024	756
2025	334
Thereafter	4,027
Total	$	10,927