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Note 3 - Debt - Summary of Credit and Other Debt Facilities (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Interest Rate
Balance	$ 18,585	$ 17,980
Balance outstanding	$ 1,204	$ 1,376
Investec Bank Ltd. [Member]
Interest Rate	11.25%	10.50%
Balance	$ 2,224	$ 1,700
Balance outstanding	$ 1,204	$ 1,376
National Australia Bank [Member]
Interest Rate	11.10%	10.60%
Balance	$ 123	$ 156
Construction Bank [Member]
Interest Rate	4.15%	4.15%
Balance	$ 290	$ 290
Industrial Bank [Member]
Interest Rate	4.00%	4.00%
Balance	$ 435	$ 435
North Mill Capital [Member]
Interest Rate	9.90%	5.25%
Balance	$ 14,813	$ 14,399
Resouces Plus Seller Notes [Member]
Interest Rate	1.85%	1.85%
Balance	$ 700	$ 1,000

X

- Definition

Amount of debt and lease obligation, classified as current.

+ 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(21))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- 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

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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
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-Section 50
-Paragraph 6
-Subparagraph (a)
-Publisher FASB
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X

- 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
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