Note 20 - Concentration of Risk (Tables)

6 Months Ended

Jun. 30, 2019

Notes Tables

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

	Customer A			Customer B			Customer C
Six Months Ended June 30, 2019
Revenues, customer concentration risk		13	%		-			*
Three Months Ended June 30, 2019
Revenues, customer concentration risk		11	%		-			-
Six Months Ended June 30, 2018
Revenues, customer concentration risk		14	%		14	%		*
Three Months Ended June 30, 2018
Revenues, customer concentration risk		19	%		*			11	%
As of June 30, 2019
Accounts receivable, customer concentration risk		66	%		-			*
As of December 31, 2018
Accounts receivable, customer concentration risk		74	%		-			12	%

	Supplier A			Supplier B
Six Months Ended June 30, 2019
Cost of revenues, supplier concentration risk		90	%		*
Three Months Ended June 30, 2019
Cost of revenues, supplier concentration risk		91	%		*
Six Months Ended June 30, 2018
Cost of revenues, supplier concentration risk		83	%		13	%
Three Months Ended June 30, 2018
Cost of revenues, supplier concentration risk		87	%		10	%