Note 19 - Concentration of Risk (Tables)

3 Months Ended

Mar. 31, 2019

Notes Tables

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

	Customer A	Customer B	Customer C
Three Months Ended March 31, 2019
Revenues, customer concentration risk	17%	-	*
Three Months Ended March 31, 2018
Revenues, customer concentration risk	-	36%	*
As of March 31, 2019
Accounts receivable, customer concentration risk	72%	-	11%
As of December 31, 2018
Accounts receivable, customer concentration risk	74%	-	12%

	Supplier A	Supplier B
Three Months Ended March 31, 2019
Cost of revenues, supplier concentration risk	89%	*
Three Months Ended March 31, 2018
Cost of revenues, supplier concentration risk	73%	21%