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Note 14 - ATM Program (Details Textual) - Series B Preferred Stock [Member] - Public Offering [Member] - USD ($)
$ in Millions
2 Months Ended 3 Months Ended
Jul. 31, 2021
Sep. 30, 2022
Stock Issued During Period, Shares, New Issues (in shares) 3,188,533 8,229
Proceeds from Issuance of Preferred Stock and Preference Stock $ 76.5 $ 0.2