Note 4 - Credit Facilities and Other Debt - Summary of Credit and Other Debt Facilities (Details) $ in Thousands	Jun. 30, 2021 USD ($)
Repayments of Principal, 2021	$ 11,386
Repayments of Principal, 2022	300
Repayments of Principal, 2023	700
Repayments of Principal, 2024	0
Repayments of Principal, 2025	0
Repayments of Principal, 2026	$ 0
National Australia Bank [Member]
Interest Rate	6.56%
Repayments of Principal, 2021	$ 45
Repayments of Principal, 2022	0
Repayments of Principal, 2023	0
Repayments of Principal, 2024	0
Repayments of Principal, 2025	0
Repayments of Principal, 2026	$ 0
China Construction Bank [Member]
Interest Rate	4.25%
Repayments of Principal, 2021	$ 156
Repayments of Principal, 2022	0
Repayments of Principal, 2023	0
Repayments of Principal, 2024	0
Repayments of Principal, 2025	0
Repayments of Principal, 2026	$ 0
People's Bank of China [Member]
Interest Rate	3.65%
Repayments of Principal, 2021	$ 156
Repayments of Principal, 2022	0
Repayments of Principal, 2023	0
Repayments of Principal, 2024	0
Repayments of Principal, 2025	0
Repayments of Principal, 2026	$ 0
Industrial Bank [Member]
Interest Rate	6.00%
Repayments of Principal, 2021	$ 467
Repayments of Principal, 2022	0
Repayments of Principal, 2023	0
Repayments of Principal, 2024	0
Repayments of Principal, 2025	0
Repayments of Principal, 2026	$ 0
Bancomer Bank [Member]
Interest Rate	9.50%
Repayments of Principal, 2021	$ 250
Repayments of Principal, 2022	0
Repayments of Principal, 2023	0
Repayments of Principal, 2024	0
Repayments of Principal, 2025	0
Repayments of Principal, 2026	$ 0
North Mill, LLC [Member]
Interest Rate	5.25%
Repayments of Principal, 2021	$ 10,012
Repayments of Principal, 2022	0
Repayments of Principal, 2023	0
Repayments of Principal, 2024	0
Repayments of Principal, 2025	0
Repayments of Principal, 2026	$ 0
Resource Plus Acquisition Note [Member]
Interest Rate	1.85%
Repayments of Principal, 2021	$ 300
Repayments of Principal, 2022	300
Repayments of Principal, 2023	700
Repayments of Principal, 2024	0
Repayments of Principal, 2025	0
Repayments of Principal, 2026	$ 0

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

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