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Note 19 - Subsequent Events (Details Textual) - Subsequent Event [Member] $ in Millions		1 Months Ended
	Apr. 18, 2023	Apr. 30, 2023 USD ($)
Jingoli Power, LLC [Member]
Litigation Settlement, Amount Awarded to Other Party		$ 34
Reverse Stock Split [Member] \| Minimum [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	10
Reverse Stock Split [Member] \| Maximum [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	40