Note 22 - Concentration of Risk - Company's Concentration of Customers and Suppliers (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Cost Of Sales Total [Member] | Supplier Concentration Risk [Member] | Supplier A [Member]
Revenues, customer concentration risk	85.00%	64.00%
Cost Of Sales Total [Member] | Supplier Concentration Risk [Member] | Supplier B [Member]
Revenues, customer concentration risk	11.00%	26.00%
Customer A [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk [Member]
Revenues, customer concentration risk	17.00%	12.00%
Customer A [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]
Revenues, customer concentration risk	74.00%	30.00%
Customer B [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk [Member]
Revenues, customer concentration risk		12.00%
Customer B [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]
Revenues, customer concentration risk	12.00%
Customer C [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk [Member]
Revenues, customer concentration risk		10.00%
Customer C [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]
Revenues, customer concentration risk		20.00%
Customer D [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]
Revenues, customer concentration risk		16.00%