Note 1 - Organization and Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2022

Notes Tables

Schedules of Concentration of Risk, by Risk Factor [Table Text Block]

	Accounts Receivable						Revenue
	March 31,			December 31,			March 31,
	2022			2021			2022			2021
Customer A		16	%		10	%		*			*
Customer B		14	%		*			20	%		*
Customer C		*			*			11	%		*

Revenue from External Customers by Products and Services [Table Text Block]

	Three Months Ended
	March 31,
Revenue by customers’ geographic locations	2022			2021
United States		79	%		75	%
Canada		1	%		10	%
Europe, Middle East, Africa (EMEA)		16	%		12	%
Other		4	%		3	%
Total revenue		100	%		100	%