Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

The change in the carrying amounts of goodwill for the three months ended March 31, 2018 was as follows (in thousands):

	Amount
Balance at December 31, 2017	$	53,563
Currency translation adjustments		(277)
Balance at March 31, 2018	$	53,286

Schedule of Identifiable Intangible Assets

Purchased intangible assets consisted of the following as of March 31, 2018 and December 31, 2017 (in thousands):

	March 31, 2018						December 31, 2017
	Gross Carrying Amount		Accumulated Amortization		Intangible Assets, Net		Gross Carrying Amount		Accumulated Amortization		Intangible Assets, Net
Finite-lived intangible assets:
Proprietary adjuvant technology	$	8,959	$	(2,090)	$	6,869	$	9,086	$	(2,006)	$	7,080
Collaboration agreements		4,045		(3,339)		706		4,103		(3,310)		793
Total identifiable intangible assets	$	13,004	$	(5,429)	$	7,575	$	13,189	$	(5,316)	$	7,873

Schedule of Estimated Amortization Expense

Estimated amortization expense for existing intangible assets for the remainder of 2018 and for each of the five succeeding years ending December 31 will be as follows (in thousands):

Year	Amount
2018 (remainder)	$	563
2019		751
2020		625
2021		448
2022		448
2023		448