Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

The change in the carrying amounts of goodwill for the three months ended March 31, 2019 was as follows (in thousands):

	Amount
Balance at December 31, 2018	$	51,967
Currency translation adjustments		(722	)
Balance at March 31, 2019	$	51,245

Schedule of Identifiable Intangible Assets

Purchased intangible assets consisted of the following as of March 31, 2019 and December 31, 2018 (in thousands):

	March 31, 2019							December 31, 2018
	Gross Carrying Amount		Accumulated Amortization			Intangible Assets, Net		Gross Carrying Amount		Accumulated Amortization			Intangible Assets, Net
Finite-lived intangible assets:
Proprietary adjuvant technology	$	8,026	$	(2,274	)	$	5,752	$	8,357	$	(2,263	)	$	6,094
Collaboration agreements		3,624		(3,262	)		362		3,773		(3,326	)		447
Total identifiable intangible assets	$	11,650	$	(5,536	)	$	6,114	$	12,130	$	(5,589	)	$	6,541

Schedule of Estimated Amortization Expense

Estimated amortization expense for existing intangible assets for the remainder of 2019 and for each of the five succeeding years ending December 31 will be as follows (in thousands):

Year	Amount
2019 (remainder)	$	505
2020		560
2021		401
2022		401
2023		401
2024		401