Note 10 - Segment Reporting

12 Months Ended

Dec. 31, 2022

Notes to Financial Statements

Segment Reporting Disclosure [Text Block]

10. Segment Reporting

The Company operates and manages the business as one reportable and operating segment. The Company’s Chief Executive Officer acts as the chief operating decision maker ("CODM") of the Company. The CODM reviews the results of the Company on a consolidated basis, however in making certain operating decisions and assessing performance, the CODM will additionally review the disaggregated revenue results by product and geography. All of the Company’s long-lived assets are based in the United States.

Revenue by product consisted of the following (in thousands):

	Year Ended December 31,
	2022		2021		2020
Systems	$	560	$	1,189	$	—
Cycle units		140		229		—
Total consolidated revenue	$	700	$	1,418	$	—

Revenue by geography consisted of the following (in thousands):

	Year Ended December 31,
	2022		2021		2020
North America	$	517	$	1,182	$	—
Rest of World		183		236		—
Total consolidated revenue	$	700	$	1,418	$	—