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Note 19 - Statutory Financial Information (Details Textual) - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Statutory Accounting Practices [Line Items]        
Equity, Attributable to Parent $ 942,667,000 $ 729,030,000 $ 471,252,000 $ 384,754,000
BERMUDA        
Statutory Accounting Practices [Line Items]        
Minimum Statutory Solvency Margin 1,200,000      
Statutory Accounting Practices, Statutory Capital and Surplus, Balance 17,800,000 17,000,000    
Statutory Accounting Practices, Statutory Net Income Amount 400,000 400,000 $ 300,000  
Equity, Attributable to Parent 18,100,000 16,900,000    
Dividends Received from Subsidiary $ 0 $ 0    
BERMUDA | Minimum [Member]        
Statutory Accounting Practices [Line Items]        
Liquidity Ratio 75.00%