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Note 9 - Term Loans and Line of Credit Agreements (Details Textual)
3 Months Ended 9 Months Ended 12 Months Ended
Dec. 20, 2019
USD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2021
Jun. 30, 2020
USD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2021
USD ($)
Dec. 31, 2021
USD ($)
May 31, 2018
USD ($)
Long-Term Debt, Gross   $ 30,955,000     $ 30,955,000      
Payments of Debt Issuance Costs         277,000 $ (0)    
Proceeds from Lines of Credit, Total         950,000 0    
Proceeds from Issuance of Long-Term Debt, Total         $ 31,000,000 $ 0    
Long-Term Debt, Weighted Average Interest Rate, over Time   5.69% 5.00%   527.00% 491.00%    
New Term Loan Agreement [Member] | Laurel Capital Corporation [Member]                
Long-Term Debt, Gross $ 31,000,000.0              
Payments of Debt Issuance Costs 400,000              
Proceeds from Issuance of Debt $ 10,400,000              
Restricted Cash, Total   $ 10,400,000     $ 10,400,000      
Debt Instrument, Periodic Payment, Number of Payments 119              
Debt Instrument, Maturity Schedule 15 years              
Debt Instrument, Interest Rate, Stated Percentage, First Five Years 6.00%              
Debt Instrument, Prepayment Penalty, Percentage, First Five Years 5.00%              
Debt Instrument, Prepayment Penalty, Percentage, Years Six and Seven 4.00%              
Debt Instrument, Prepayment Penalty, Percentage, Years Eight and Nine 3.00%              
Debt Instrument, Prepayment Penalty, Percentage, Year Ten 2.00%              
Debt Instrument, Covenant, Fixed Charge Coverage Ratio 1.20              
Debt Issuance Costs, Net, Total $ 600,000              
New Castle Country Club Commercial Mortgage [Member] | Mercer County State Bank [Member]                
Repayments of Debt $ 20,200,000              
The Line of Credit Agreement [Member] | Home Savings Bank [Member]                
Debt Instrument, Covenant, Fixed Charge Coverage Ratio         1.20      
Line of Credit Facility, Maximum Borrowing Capacity               $ 5,000,000.0
Line of Credit Facility, Amounts in Excess of, Subject to Borrowing Base               $ 1,000,000.0
Proceeds from Lines of Credit, Total         $ 1,000,000.0   $ 0  
Line of Credit Facility, Interest Rate at Period End   6.50%     6.50%      
The Line of Credit Agreement [Member] | Home Savings Bank [Member] | Prime Rate [Member]                
Debt Instrument, Basis Spread on Variable Rate         0.25%   0.25%  
Paycheck Protection Program CARES Act [Member]                
Proceeds from Issuance of Long-Term Debt, Total       $ 2,800,000        
Debt Instrument, Decrease, Forgiveness           $ 2,000,000.0    
Interest Forgiven         $ 0 $ 17,000