Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2021

Goodwill And Intangible Assets Disclosure [Abstract]

Summary of Intangible Assets

Intangible Assets consists of the following (in thousands):

	As of December 31,
	2021			2020
Patents	$	1,277		$	2,286
Less: accumulated amortization		(403	)		(1,099	)
		874			1,187
Indefinite life logos and trademarks		75			75
Intangible assets, net	$	949		$	1,262

Summary of Future Amortization Expense Related to Intangible Assets Subject to Amortization

The timing of approval of pending patent applications is uncertain and, therefore, are included in the thereafter period below until issued. Pending patents as of December 31, 2021 was $108 thousand. As of December 31, 2021, future amortization expense related to intangible assets subject to amortization is expected to be as follows (in thousands):

Years ending December 31,
2022		78
2023		78
2024		78
2025		75
2026		72
Thereafter		493
Total	$	874