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Intangible Assets, Net

12 Months Ended

Dec. 31, 2018

Goodwill And Intangible Assets Disclosure [Abstract]

6.	Intangible Assets, net

Intangible assets are related to certain capitalized milestone and sublicense payments. The following table presents intangible assets (in thousands):

	December 31,
	2018			2017
Intangible assets	$	19,773		$	2,500
Less accumulated amortization		(8,056	)		(1,194	)
Total	$	11,717		$	1,306

For the year ended December 31, 2018, we recorded $10.9 million in cost of sales - amortization of intangible assets which included amortization of $8.1 million, $1.5 million and $1.3 million related to capitalized milestone and sublicense payments to Merck, GlaxoSmithKline Biologicals SA (“GSK”) and Coley Pharmaceutical Group, Inc. (“Coley”), respectively. For the year ended December 31, 2017, we recorded $1.2 million in cost of sales - amortization of intangible assets related to a capitalized milestone payment to Coley. See Note 10. At December 31, 2018, the remaining intangible asset has an estimated remaining useful life of 16 months and will be fully amortized by April 2020. No impairment of intangible assets has been identified during the years presented.