Note 20 - Concentration of Risk (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

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

	Customer A		Customer B		Customer C		Customer D
Year Ended December 31, 2019
Revenues, customer concentration risk		*		*		*		*
Year Ended December 31, 2018
Revenues, customer concentration risk		17%		*		*		-
As of December 31, 2019
Accounts receivable, customer concentration risk		57%		-		13%		12%
As of December 31, 2018
Accounts receivable, customer concentration risk		74%		12%		*		-

	Supplier A		Supplier B
Year Ended December 31, 2019
Cost of revenues, supplier concentration risk		89%		*
Year Ended December 31, 2018
Cost of revenues, supplier concentration risk		85%		11%