Intangible Assets

3 Months Ended

Mar. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

Intangible Assets

Intangible assets consisted of the following:

(in thousands)	March 31, 2023		December 31, 2022
Patents	$	405	$	404
Less accumulated amortization	(255)		(244)
Total intangible assets	$	150	$	160

The weighted average remaining useful life of the patents was 4.20 years. For the three months ended March 31, 2023 and 2022, amortization expense was $0.0 million