Goodwill and Other Intangible Assets

9 Months Ended

Sep. 30, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

Goodwill and Other Intangible Assets

Goodwill

The change in the carrying amounts of goodwill for the nine months ended September 30, 2021 was as follows (in thousands):

	Amount
Balance at December 31, 2020	$	135,379
Currency translation adjustments	(3,390)
Balance at September 30, 2021	$	131,989

Identifiable Intangible Assets

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

	September 30, 2021						December 31, 2020
	Gross Carrying Amount		Accumulated  Amortization		Intangible Assets, Net		Gross Carrying Amount		Accumulated  Amortization		Intangible Assets, Net
Finite-lived intangible assets:
Proprietary adjuvant technology	$	8,496	$	(3,469)	$	5,027	$	9,099	$	(3,374)	$	5,725
Collaboration agreements	3,836		(3,836)		—		4,109		(4,109)		—
Total identifiable intangible assets	$	12,332	$	(7,305)	$	5,027	$	13,208	$	(7,483)	$	5,725

Amortization expense for the nine months ended September 30, 2021 and 2020 was $0.3 million and $0.5 million, respectively.

Estimated amortization expense for existing intangible assets for the remainder of 2021 and for each of the five succeeding years ending December 31 will be as follows (in thousands):

Year	Amount
2021 (remainder)	$	106
2022	425
2023	425
2024	425
2025	425
2026	425