Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2020

Goodwill and Other Intangible Assets

Schedule of goodwill

The change in the carrying amounts of goodwill for the six months ended June 30, 2020 was as follows (in thousands):

	Amount
Balance at December 31, 2019	$	51,154
Goodwill resulting from the acquisition of Praha Vaccines		70,468
Currency translation adjustments		(2,773)
Balance at June 30, 2020	$	118,849

Schedule of identifiable intangible assets

Purchased intangible assets consisted of the following as of June 30, 2020 and December 31, 2019 (in thousands):

	June 30, 2020						December 31, 2019
	Gross						Gross
	Carrying		Accumulated		Intangible		Carrying		Accumulated		Intangible
	Amount		Amortization		Assets, Net		Amount		Amortization		Assets, Net
Finite-lived intangible assets:
Proprietary adjuvant technology	$	7,991	$	(2,764)	$	5,227	$	7,985	$	(2,562)	$	5,423
Collaboration agreements		3,608		(3,585)		23		3,606		(3,448)		158
Total identifiable intangible assets	$	11,599	$	(6,349)	$	5,250	$	11,591	$	(6,010)	$	5,581

Schedule of estimated amortization expense

Estimated amortization expense for existing intangible assets for the remainder of 2020 and for each of the five succeeding years ending December 31 will be as follows (in thousands):

Year	Amount
2020 (remainder)	$	222
2021		400
2022		400
2023		400
2024		400
2025		400