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Intangible Assets, net (Tables)
 12 Months Ended
Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Finite-Lived Intangible Assets
The following table summarizes our major classes of intangible assets (in thousands):
 
 
December 31,
 
 
2019
 
2018
Patents
 
$
465

 
$
721

Accumulated amortization - Patents
 
(199
)
 
(221
)
Intangibles, net
 
$
266

 
$
500