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Note 4 - Credit Facilities - Summary of Credit and Other Debt Facilities (Details) $ in Thousands	Dec. 31, 2020 USD ($)
Interest Rate
Repayments of Principal, 2021	$ 9,329
Repayments of Principal, 2022	300
Repayments of Principal, 2023	700
Repayments of Principal, 2024
Repayments of Principal, 2025
North Mill, LLC [Member]
Interest Rate	6.75%
Repayments of Principal, 2021	$ 8,262
Repayments of Principal, 2022
Repayments of Principal, 2023
Repayments of Principal, 2024
Repayments of Principal, 2025
Fifth Third Bank [Member]
Interest Rate	3.60%
Repayments of Principal, 2021
Repayments of Principal, 2022
Repayments of Principal, 2023
Repayments of Principal, 2024
Repayments of Principal, 2025
USA - Resource Plus Sellers [Member]
Interest Rate	1.85%
Repayments of Principal, 2021	$ 300
Repayments of Principal, 2022	300
Repayments of Principal, 2023	700
Repayments of Principal, 2024
Repayments of Principal, 2025
National Australia Bank [Member]
Interest Rate	6.56%
Repayments of Principal, 2021	$ 154
Repayments of Principal, 2022
Repayments of Principal, 2023
Repayments of Principal, 2024
Repayments of Principal, 2025
Industrial Bank [Member]
Interest Rate	4.65%
Repayments of Principal, 2021	$ 460
Repayments of Principal, 2022
Repayments of Principal, 2023
Repayments of Principal, 2024
Repayments of Principal, 2025
CCB Bank [Member]
Interest Rate	4.25%
Repayments of Principal, 2021	$ 153
Repayments of Principal, 2022
Repayments of Principal, 2023
Repayments of Principal, 2024
Repayments of Principal, 2025
Ve Por Mas [Member]
Interest Rate	8.00%
Repayments of Principal, 2021
Repayments of Principal, 2022
Repayments of Principal, 2023
Repayments of Principal, 2024
Repayments of Principal, 2025

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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