Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The change in the carrying amounts of goodwill for the six months ended June 30, 2018 was as follows (in thousands):

	Amount
Balance at December 31, 2017	$	53,563
Currency translation adjustments		(1,580	)
Balance at June 30, 2018	$	51,983

Schedule of Identifiable Intangible Assets

Purchased intangible assets consisted of the following as of June 30, 2018 and December 31, 2017 (in thousands):

	June 30, 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	$	8,364	$	(2,056	)	$	6,308	$	9,086	$	(2,006	)	$	7,080
Collaboration agreements		3,777		(3,188	)		589		4,103		(3,310	)		793
Total identifiable intangible assets	$	12,141	$	(5,244	)	$	6,897	$	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)	$	351
2019		701
2020		583
2021		418
2022		418
2023		418