Intangible Assets, Net

9 Months Ended

Sep. 30, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets, Net

Intangible Assets, Net

The following table provides the components of identifiable intangible assets, all of which are finite lived:

	September 30, 2021		December 31, 2020
Purchased technology-based intangible	$	2,358	$	2,358
Purchased patent	509		509
	2,867		2,867
Less: accumulated amortization	(2,803)		(2,765)
Intangible assets, net	64		102

Amortization expense was $13 and $13 for each of the three-month periods ended September 30, 2021 and 2020. For the corresponding nine-month periods, these expenses totaled $38 and $38, respectively. During the remaining life of the purchased patent, estimated annual amortization expense is $50 for each of the years from 2021 to 2022.