Note 20 - Concentration of Risk - Company's Concentration of Customers and Suppliers (Details)	12 Months Ended
	Dec. 31, 2020		Dec. 31, 2019
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer A [Member]
Concentration risk	28.00%		57.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer B [Member]
Concentration risk		[1]	13.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer C [Member]
Concentration risk		[1]	12.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer D [Member]
Concentration risk	27.00%			[1]
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer E [Member]
Concentration risk	21.00%			[1]
Cost Of Sales Total [Member] | Supplier Concentration Risk [Member] | Supplier A [Member]
Concentration risk	78.00%		89.00%

[1] Less than 10%.