Intangible assets, net (Tables)

12 Months Ended

Dec. 31, 2016

Intangible assets, net [Abstract]

Intangible assets

At December 31, 2016 and 2015, intangible assets, primarily consisting of acquired patents and accumulated amortization were as follows (in thousands):

	December 31,
	2016(1)			2015
Intangible assets	$	25,703		$	52,563
Accumulated amortization		(15,497	)		(18,971	)
Intangible assets, net	$	10,206		$	33,592

(1) Reflects the effect of the Asterias Deconsolidation.

Intangible assets future amortization expense

Amortization of intangible assets for periods subsequent to December 31, 2016 is as follows (in thousands):

Year Ended December 31,	Amortization Expense
2017	$	2,570
2018		2,570
2019		2,571
2020		1,794
2021		537
Thereafter		164
Total	$	10,206