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Note 16 - Subsequent Events (Details Textual)
2 Months Ended 12 Months Ended
Jan. 28, 2026
USD ($)
$ / shares
Jan. 14, 2026
USD ($)
Mar. 26, 2026
USD ($)
Dec. 31, 2025
USD ($)
$ / shares
Dec. 31, 2024
USD ($)
Dec. 24, 2015
USD ($)
Discontinued Operations, Disposed of by Sale [Member]            
Number of Real Estate Properties       20 51  
Real Estate Property, Consideration Transferred, Total       $ 9,800,000 $ 24,800,000  
Gain (Loss) on Sale of Properties       $ 1,000,000 $ 3,400,000  
Promissory Note [Member] | Bancorp Bank [Member]            
Debt Instrument, Face Amount           $ 17,727,500
Subsequent Event [Member] | Discontinued Operations, Disposed of by Sale [Member]            
Number of Real Estate Properties     5      
Real Estate Property, Consideration Transferred, Total     $ 2,500,000      
Gain (Loss) on Sale of Properties     $ 100,000      
Subsequent Event [Member] | Dakota Center [Member]            
Proceeds from Sale of Real Estate   $ 5,125,000        
Series D Preferred Stock [Member]            
Preferred Stock, Dividend Rate, Percentage       9.375%    
Preferred Stock, Dividend Rate, Per-Dollar-Amount (in dollars per share) | $ / shares       $ 2.34375    
Series D Preferred Stock [Member] | Subsequent Event [Member]            
Preferred Stock, Dividend Rate, Percentage 9.375%          
Preferred Stock, Dividend Rate, Per-Dollar-Amount (in dollars per share) | $ / shares $ 0.19531          
Preferred Stock, Yearly Cash Savings From Dividends Suspension $ 2,300,000