Note 10 - Debt - Short-term Debt (Details) - Notes Payable to Banks [Member] $ in Thousands	Dec. 31, 2019 USD ($)
Outstanding Balance	$ 2,349
Five Point Three Percent Short Term Loan [Member] | Santander Bank [Member]
Interest Rate	5.30%
Outstanding Balance	$ 157
Four Point Two Seven Percent Short Term Loan [Member] | Bradesco Bank [Member]
Interest Rate	4.27%
Outstanding Balance	$ 124
Four Point Zero Percent Short Term Loan [Member] | Bradesco Bank [Member]
Interest Rate	4.00%
Outstanding Balance	$ 783
Three Point One One Percent Short Term Loan Member | Brazil Bank Member
Interest Rate	3.11%
Outstanding Balance	$ 500
Ten Point Seven Six Percent Short Term Loan [Member] | Santander Bank [Member]
Interest Rate	10.76%
Outstanding Balance	$ 785