Note 20 - Concentration of Risk (Tables)

3 Months Ended

Mar. 31, 2020

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
Three Months Ended March 31, 2020
Revenues, customer concentration risk		*			*			*			*			15	%		11	%
Three Months Ended March 31, 2019
Revenues, customer concentration risk		17	%		*			-			-			-			-
As of March 31, 2020
Accounts receivable, customer concentration risk		27	%		12	%		24	%		11	%		-			-
As of December 31, 2019
Accounts receivable, customer concentration risk		57	%		13	%		12	%		-			-			-

	Supplier A			Supplier B
Three Months Ended March 31, 2020
Cost of revenues, supplier concentration risk		71	%		11	%
Three Months Ended March 31, 2019
Cost of revenues, supplier concentration risk		89	%		-