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Note 19 - Commitments and Contingencies (Details Textual) - USD ($) $ in Millions | 12 Months Ended | 252 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2022 | Dec. 31, 1994
Purchase Commitment, Remaining Minimum Amount Committed | $ 82.2 | $ 57.7 |  |  |  |
Arezzo Revenue Agency [Member] |  |  |  |  |  |
Loss Contingency, Estimate of Possible Loss |  |  |  |  | $ 12.0 |
EOS Claim From Principal Commissioner of Customs [Member] | EOS Power Panama Inc. [Member] |  |  |  |  |  |
Customs Duties and Imposed Fines |  |  | $ 0.9 |  |  | $ 1.4
Payment for Customs Duties and Imposed Fines and Penalties |  |  |  | $ 0.5 |  |
Indemnification Period (Year) |  |  | 7 years |  |  |
Capital Addition Purchase Commitments [Member] |  |  |  |  |  |
Long-Term Purchase Commitment, Amount | $ 4.6 | $ 5.8 |  |  |  |

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- Definition Reflects the estimated amount of loss from the specified contingency as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 720 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483359/720-20-50-1 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 27 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482395/460-10-55-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 9 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-9 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-4 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482425/460-10-50-3 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482425/460-10-50-2 + Details
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