Patents and Other Intangible Assets - Summary (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Patents	$ 1,145	$ 1,122
Trademarks	102	101
Other	8	8
Patents and other intangible assets	1,255	1,231
Accumulated amortization	(473)	(433)
Finite-Lived Intangible Assets, Net	782	798
Patents pending
Patents	330	307
Issued patents
Patents	815	815
Trademarks pending
Trademarks	7	6
Registered trademarks
Trademarks	$ 95	$ 95

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
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