v3.26.1
Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares
Jun. 30, 2023
Dec. 31, 2022
Preferred Stock, Par or Stated Value Per Share (in dollars per share) $ 0.01  
Preferred Stock, Shares Authorized (in shares) 50,000,000  
Common Stock, Par or Stated Value Per Share (in dollars per share) $ 0.01 $ 0.01
Common Stock, Shares Authorized (in shares) 400,000,000 400,000,000
Common stock, shares issued (in shares) 695,214 695,214
Common stock, shares outstanding (in shares) 657,084 657,084
Treasury stock, shares (in shares) 38,130 38,130
Series A Preferred Stock [Member]    
Preferred Stock, Par or Stated Value Per Share (in dollars per share) $ 0.01 $ 0.01
Preferred Stock, Shares Authorized (in shares) 1,518,000 1,518,000
Preferred Stock, Shares Issued (in shares) 256,636 256,636
Preferred Stock, Shares Outstanding, Ending Balance (in shares) 256,636 256,636
Preferred Stock, Liquidation Preference Per Share (in dollars per share) $ 10 $ 10
Series C Preferred Stock [Member]    
Preferred Stock, Par or Stated Value Per Share (in dollars per share) $ 0.01 $ 0.01
Preferred Stock, Shares Authorized (in shares) 300,000 300,000
Preferred Stock, Shares Issued (in shares) 231,944 231,944
Preferred Stock, Shares Outstanding, Ending Balance (in shares) 231,944 231,944
Preferred Stock, Liquidation Preference Per Share (in dollars per share) $ 10 $ 10