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Note 13 - Subsequent Events (Details Textual) - Subsequent Event [Member]	Jul. 25, 2023
Common Class A [Member] \| Stock Split To [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	3
Common Class A [Member] \| Stock Split From [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	2
Common Class B [Member] \| Stock Split To [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	3
Common Class B [Member] \| Stock Split From [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	2