Intangible Assets, Net

12 Months Ended

Dec. 31, 2017

Goodwill And Intangible Assets Disclosure [Abstract]

Intangible Assets, Net

Note 5. Intangible Assets, net

Intangible assets, net, consisted of the following (in thousands):

	December 31, 2016
	Gross		Accumulated Amortization			Net
Patents	$	873	$	(807	)	$	66
	December 31, 2017
	Gross		Accumulated Amortization			Net
Patents	$	949	$	(854	)	$	95

Amortization expense during the years ended December 31, 2015, 2016 and 2017 was $86,000, $37,000 and $47,000, respectively.