Note 21 - Concentration of Risk (Tables)

9 Months Ended

Sep. 30, 2019

Notes Tables

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

	Customer A			Customer B		Customer C			Customer D
Nine Months Ended September 30, 2019
Revenues, customer concentration risk		11	%		-		*			*
Three Months Ended September 30, 2019										10	%
Revenues, customer concentration risk		*			-		-
Nine Months Ended September 30, 2018
Revenues, customer concentration risk		17	%		*		*			*
Three Months Ended September 30, 2018
Revenues, customer concentration risk		22	%		-		*			*
As of September 30, 2019
Accounts receivable, customer concentration risk		68	%		-		*			-
As of December 31, 2018
Accounts receivable, customer concentration risk		74	%		-		12	%		-

	Supplier A			Supplier B
Nine Months Ended September 30, 2019
Cost of revenues, supplier concentration risk		90	%		*
Three Months Ended September 30, 2019
Cost of revenues, supplier concentration risk		88	%		*
Nine Months Ended September 30, 2018
Cost of revenues, supplier concentration risk		84	%		12	%
Three Months Ended September 30, 2018
Cost of revenues, supplier concentration risk		86	%		10	%