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Consolidated Balance Sheets (Parentheticals) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Statement of Financial Position [Abstract]    
Preferred shares, par value (in dollars per share) $ 0 $ 0
Preferred shares, authorized (in shares) 50,000,000 50,000,000
Preferred shares, issued (in shares) 9,042 9,042
Preferred shares, outstanding (in shares) 9,042 9,042
Preferred shares, liquidation preference $ 98,907,587 $ 97,438,687
Common stock, par value (in dollars per share) $ 0 $ 0
Common stock, shares authorized (in shares) 46,000,000 46,000,000
Common stock, shares issued (in shares) 14,079,336 14,431,819
Common stock, shares outstanding (in shares) 13,712,661 14,111,221
Treasury shares (in shares) 366,675 320,598