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Note 4 - Debt - Summary of Credit and Other Debt Facilities (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Balance | $ 17,530 | $ 17,980
Balance outstanding | $ 310 | $ 1,376
Investec Bank Ltd. [Member] |  |
Interest Rate | 11.75% | 10.50%
Balance | $ 3,369 | $ 1,700
Balance outstanding | $ 310 | $ 1,376
North Mill Capital [Member] |  |
Interest Rate | 10.40% | 5.25%
Balance | $ 12,475 | $ 14,399
USA - Resource Plus Sellers, Short-term [Member] |  |
Interest Rate | 1.85% | 1.85%
Balance | $ 1,120 | $ 1,000
National Australia Bank [Member] |  |
Interest Rate |  | 10.60%
Balance | $ 0 | $ 156
Industrial Bank [Member] |  |
Interest Rate | 3.56% | 4.00%
Balance | $ 283 | $ 435
Industrial Bank and Commercial Bank of China [Member] |  |
Interest Rate | 4.00% | 4.15%
Balance | $ 283 | $ 290

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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 835 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482900/835-30-50-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482925/835-30-45-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-6 + Details
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- Definition Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt classified as noncurrent. Excludes lease obligation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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