Intangible and Other Assets (Tables)

12 Months Ended

Dec. 31, 2019

Intangible And Other Assets [Abstract]

Summary of Intangible Assets

Following is a summary of intangible assets as of December 31:

		2019				2018
	Weighted Average Life	Gross Amount		Accumulated Amortization		Gross Amount		Accumulated Amortization
Intangibles:
Patents and licenses, software and hardware designs	6 years	$	3,432	$	1,731	$	5,177	$	3,430
Developed technology	10 years		2,782		2,782		2,782		2,573
Customer relationships and non-compete	9 years		—		—		2,838		2,838
		$	6,214	$	4,513	$	10,797	$	8,841

Other Assets

Following is a summary of other assets as of December 31:

	2019		2018
Other assets:
Inventories - bauxite raw materials	$	4,012	$	4,160
Investment in PicOnyx		128		—
PicOnyx promissory note		500		—
Other		784		1,034
	$	5,424	$	5,194