Note 10 - Debt - Short-term Debt (Details) - Notes Payable to Banks [Member] - USD ($) $ in Thousands	Sep. 01, 2020	Apr. 01, 2020	Mar. 01, 2020	Feb. 01, 2020	Sep. 30, 2019
Santander					$ 2,194
Five Point Three Percent Short Term Loan [Member] | Santander Bank [Member]
Santander				5.30%
Santander					432
Four Point Two Seven Percent Short Term Loan [Member] | Bradesco Bank [Member]
Santander			4.27%
Santander					262
Four Point Zero Percent Short Term Loan [Member] | Bradesco Bank [Member]
Santander		4.00%
Santander					1,000
Three Point One One Percent Short Term Loan Member | Brazil Bank Member
Santander	3.11%
Santander					$ 500