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Note 15 - Commitments and Contingencies (Details Textual) - USD ($) | May 03, 2023 | Aug. 01, 2022 | Mar. 31, 2023 | Dec. 31, 2022 | Oct. 07, 2022
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Amount Financed by Dealers |  |  | $ 179,800 | $ 212,200 |
Power Home Solar, LLC [Member] | Collectibility of Receivables [Member] |  |  |  |  |
Accounts Receivable, before Allowance for Credit Loss |  |  |  |  | $ 17,700
Consumer Product Safety Commission [Member] | Subsequent Event [Member] |  |  |  |  |
Settlement Agreement, Civil Fine Payments | $ 15,800 |  |  |  |
Power Home Solar, LLC Against Generac Power Systems, Inc. [Member] | Minimum [Member] |  |  |  |  |
Loss Contingency, Damages Sought, Value |  | $ 25,000.0 |  |  |

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- Definition Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(5)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)(a)(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481990/310-10-45-2 + Details
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