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Note 12 - Long-term Debt (Details Textual)
3 Months Ended
Mar. 31, 2023
USD ($)
Dec. 31, 2023
Dec. 31, 2022
USD ($)
Jun. 30, 2022
USD ($)
Dec. 31, 2021
Dec. 06, 2021
USD ($)
Aug. 12, 2019
USD ($)
Long-Term Debt $ 28,114,900            
Long-Term Debt, Current Maturities 1,557,625   $ 1,545,090        
First National Bank of Omaha [Member]              
Line of Credit Facility, Maximum Borrowing Capacity             $ 40,000,000
Credit Agreement, Maximum Dividend Amount       $ 8,125,000      
Long-term Line of Credit, Total $ 0            
Minimum Consolidated Leverage Ratio Requirement     3.25   3.50    
First National Bank of Omaha [Member] | Forecast [Member]              
Minimum Consolidated Leverage Ratio Requirement   3.00          
Consolidated Fixed Charge Ratio Requirement   1.15          
First National Bank of Omaha [Member] | Revolving Credit Facility [Member]              
Line of Credit Facility, Maximum Borrowing Capacity             5,000,000
First National Bank of Omaha [Member] | Revolving Credit Facility [Member] | Prime Rate [Member] | Minimum [Member]              
Debt Instrument, Basis Spread on Variable Rate 0.65%            
First National Bank of Omaha [Member] | Revolving Credit Facility [Member] | Prime Rate [Member] | Maximum [Member]              
Debt Instrument, Basis Spread on Variable Rate 1.15%            
First National Bank of Omaha [Member] | Term Loan 1 [Member]              
Debt Instrument, Face Amount           $ 30,000,000 18,000,000
Debt Instrument, Interest Rate, Stated Percentage           4.00%  
Long-Term Debt, Gross $ 30,000,000            
Debt Instrument, Term (Year) 15 years            
Long-Term Debt $ 28,114,900            
Long-Term Debt, Current Maturities $ 1,557,625            
First National Bank of Omaha [Member] | Term Loan 2 [Member]              
Debt Instrument, Face Amount             $ 5,500,000