Note 2 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Schedule of Property Plant and Equipment Useful Life [Table Text Block]

	Years
Operating lease assets – Senhance System leasing			5
Machinery, manufacturing, and demonstration equipment		3	-	5
Computer equipment			3
Furniture			5
Leasehold improvements	Lesser of lease term or 3 to 10