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Note 12 - Credit Agreements (Details Textual) - USD ($)
1 Months Ended 12 Months Ended
Dec. 31, 2021
Dec. 31, 2025
Dec. 31, 2024
Jan. 27, 2026
Line of Credit Facility [Line Items]        
Interest Expense, Debt   $ 400    
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available as Percentage of Statutory Admitted Assets   10.00%    
Federal Home Loan Bank, Advance, Branch of FHLBank, Amount   $ 0    
Interest Expense, Loans from Other Federal Home Loan Banks   0 $ 800,000  
Revolving Credit Facility [Member]        
Line of Credit Facility [Line Items]        
Line of Credit Facility, Maximum Borrowing Capacity $ 100,000,000      
Maturity Date Dec. 08, 2026      
Line of Credit Facility, Commitment Fee Amount $ 300,000      
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage 0.25%      
Debt Instrument, Basis Spread on Variable Rate, Additional Spread for Default 2.00%      
Long-Term Line of Credit   $ 0 0 $ 150,000,000
Interest Expense, Debt     $ 300,000  
Revolving Credit Facility [Member] | Secured Overnight Financing Rate (SOFR) [Member]        
Line of Credit Facility [Line Items]        
Debt Instrument, Basis Spread on Variable Rate 1.75%      
Revolving Credit Facility [Member] | Alternate Base Rate [Member]        
Line of Credit Facility [Line Items]        
Debt Instrument, Basis Spread on Variable Rate 0.75%