Note 19 - Concentration of Risk (Tables)

3 Months Ended

Mar. 31, 2021

Notes Tables

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

	Customer A			Customer B			Customer C			Customer D			Customer E			Customer F			Customer G
Three Months Ended March 31, 2021														18	%		-			-
Revenues, customer concentration risk		*			*			-			-
Three Months Ended March 31, 2020
Revenues, customer concentration risk		*			-			*			*			-			15	%		11	%
As of March 31, 2021
Accounts receivable, customer concentration risk		38	%		34	%		-			-			-			-			-
As of December 31, 2020
Accounts receivable, customer concentration risk		28	%		-			27	%		21	%		-			-			-

	Supplier A			Supplier B			Supplier C
Three Months Ended March 31, 2021
Cost of revenues, supplier concentration risk		52	%		30	%		*
Three Months Ended March 31, 2020
Cost of revenues, supplier concentration risk		-			71	%		11	%