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Note 1 - Organization and Nature of Business (Details Textual)
$ in Thousands
6 Months Ended 12 Months Ended
Jul. 20, 2023
USD ($)
May 26, 2023
USD ($)
Jun. 30, 2023
USD ($)
MortgageLoan
Property
Dec. 31, 2022
Dec. 31, 2019
USD ($)
Real Estate Properties [Line Items]          
Total real estate properties held for investment, net     $ 392,000    
Number of real estate properties | Property     16    
Maturity date description     the Basis Term Loan (as defined below) had an outstanding principal balance of $66.9 million as of June 30, 2023 and matures on January 1, 2024, subject to the remaining one-year extension option that is subject to certain conditions, including a material adverse change clause, and approval by the lender.    
Mortgages with principal balances outstanding     $ 11,300    
Long-term debt outstanding     $ 254,396    
Minimum [Member]          
Real Estate Properties [Line Items]          
Short-term mortgages maturity period     3 years    
Maximum [Member]          
Real Estate Properties [Line Items]          
Short-term mortgages maturity period     5 years    
Mortgage Loans Due Within Twelve Months | Mortgage Loan [Member]          
Real Estate Properties [Line Items]          
Number of mortgage loan | MortgageLoan     1    
Basis Term Loan [Member]          
Real Estate Properties [Line Items]          
Maturity date description     The Basis Term Loan initial maturity was January 1, 2023, subject to two one-year extension options, subject to certain conditions.    
Mortgage loans     $ 66,900    
Proceeds from sale of property   $ 23,100      
Long-term debt outstanding     $ 66,900    
Basis Term Loan [Member] | Subsequent Event [Member]          
Real Estate Properties [Line Items]          
Repayments of secured debt $ 17,400        
Basis Term Loan [Member] | Maximum [Member]          
Real Estate Properties [Line Items]          
Mortgage loans         $ 66,900
Operating Partnership [Member]          
Real Estate Properties [Line Items]          
Operating partnership percentage     85.60% 85.30%