Note 19 - Concentration of Risk - Company's Concentration of Customers and Suppliers (Details)		3 Months Ended			6 Months Ended		12 Months Ended
		Jun. 30, 2021		Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Customer A [Member]
Concentration risk		14.00%	[1]		11.00%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Customer B [Member]
Concentration risk		12.00%			14.00%
Cost Of Sales Total [Member] | Supplier Concentration Risk [Member] | Supplier A [Member]
Concentration risk		86.00%			73.00%
Cost Of Sales Total [Member] | Supplier Concentration Risk [Member] | Supplier B [Member]
Concentration risk				81.00%	12.00%	78.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer A [Member]
Concentration risk					62.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer C [Member]
Concentration risk					17.00%		28.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer F [Member]
Concentration risk					10.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer D [Member]
Concentration risk							27.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer E [Member]
Concentration risk	[1]						21.00%

[1] Less than 10%.