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Note 2 - Significant Accounting Policies (Details Textual) - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]      
Allowance for uncollectible premiums $ 1,100,000 $ 100,000  
Premium Deficiency $ 0 0  
Property, Plant and Equipment, Useful Life (Year) 39 years    
Impairment of Intangible Assets (Excluding Goodwill) $ 0 0 $ 0
Impairment, Long-Lived Asset, Held-for-Use 0 0 0
Unrecognized Tax Benefits 0 0  
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense $ 0 $ 0 $ 0
Customer Relationships [Member]      
Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Asset, Useful Life (Year) 8 years    
Minimum [Member]      
Finite-Lived Intangible Assets [Line Items]      
Property, Plant and Equipment, Useful Life (Year) 3 years    
Maximum [Member]      
Finite-Lived Intangible Assets [Line Items]      
Property, Plant and Equipment, Useful Life (Year) 5 years