Goodwill and Acquired Intangible Assets

9 Months Ended

Sep. 30, 2021

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill and Acquired Intangible Assets

Note D - Goodwill and Acquired Intangible Assets

The following table sets forth the changes in the carrying amount of goodwill for the nine months ended September 30, 2021 (in thousands):

Balance, December 31, 2020	$	25,452
Foreign currency translation adjustment		(924	)
Balance, September 30, 2021	$	24,528

Acquired intangible assets consisted of the following as of September 30, 2021 and December 31, 2020 (in thousands):

	As of September 30, 2021
	Amortization period (years)	Gross carrying amount		Accumulated amortization			Net carrying amount
Intellectual property	7-15 years	$	16,745	$	(11,402	)	$	5,343
Trademarks	4-4.5 years		1,269		(1,007	)		262
Other	2-7 years		2,299		(926	)		1,373
In-process research and development	Indefinite		2,015		—			2,015
Total		$	22,328	$	(13,335	)	$	8,993

	As of December 31, 2020
	Amortization period (years)	Gross carrying amount		Accumulated amortization			Net carrying amount
Intellectual property	7-15 years	$	17,013	$	(10,112	)	$	6,901
Trademarks	4-4.5 years		1,310		(980	)		330
Other	2-6 years		2,272		(749	)		1,523
In-process research and development	Indefinite		2,132		—			2,132
Total		$	22,727	$	(11,841	)	$	10,886

The weighted average amortization period of our finite-lived intangible assets is 9 years. Amortization expense related to acquired intangibles is estimated at $0.6 million for the remainder of 2021, $2.2 million for the year ending December 31, 2022, $1.7 million for the year ending December 31, 2023 and $0.6 million for the each of the years ending December 31, 2024 and 2025.