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Note 20 - Fair Value of Financial Instruments - Assets and Liabilities Measured at Fair Value (Details) - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Total, estimated fair value $ 36,956 $ 36,963
Subordinated debt, at fair value 13,375 13,409
Fair Value, Recurring [Member]    
Total, estimated fair value 36,956 36,963
Limited liability investment, at fair value 2,860 2,859
Total assets 39,816 39,822
Subordinated debt, at fair value 13,375 13,409
Total liabilities 13,375 16,134
Contingent consideration   2,725
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Total, estimated fair value 0 0
Limited liability investment, at fair value 0 0
Total assets 0 0
Subordinated debt, at fair value 0 0
Total liabilities 0 0
Contingent consideration   0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Total, estimated fair value 36,956 36,963
Limited liability investment, at fair value 0 0
Total assets 36,956 36,963
Subordinated debt, at fair value 13,375 13,409
Total liabilities 13,375 13,409
Contingent consideration   0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Total, estimated fair value 0 0
Limited liability investment, at fair value 2,860 2,859
Total assets 2,860 2,859
Subordinated debt, at fair value 0 0
Total liabilities 0 2,725
Contingent consideration   2,725
US Government Agencies Debt Securities [Member]    
Total, estimated fair value 13,506 13,354
US Government Agencies Debt Securities [Member] | Fair Value, Recurring [Member]    
Total, estimated fair value 13,506 13,354
US Government Agencies Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Total, estimated fair value 0 0
US Government Agencies Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Total, estimated fair value 13,506 13,354
US Government Agencies Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Total, estimated fair value 0 0
US States and Political Subdivisions Debt Securities [Member]    
Total, estimated fair value 2,549 2,775
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Recurring [Member]    
Total, estimated fair value 2,549 2,775
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Total, estimated fair value 0 0
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Total, estimated fair value 2,549 2,775
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Total, estimated fair value 0 0
Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member]    
Total, estimated fair value 9,560 9,886
Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] | Fair Value, Recurring [Member]    
Total, estimated fair value 9,560 9,886
Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Total, estimated fair value 0 0
Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Total, estimated fair value 9,560 9,886
Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Total, estimated fair value 0 0
Asset-Backed Securities [Member]    
Total, estimated fair value 1,323 1,326
Asset-Backed Securities [Member] | Fair Value, Recurring [Member]    
Total, estimated fair value 1,323 1,326
Asset-Backed Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Total, estimated fair value 0 0
Asset-Backed Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Total, estimated fair value 1,323 1,326
Asset-Backed Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Total, estimated fair value 0 0
Corporate Debt Securities [Member]    
Total, estimated fair value 10,018 9,622
Corporate Debt Securities [Member] | Fair Value, Recurring [Member]    
Total, estimated fair value 10,018 9,622
Corporate Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Total, estimated fair value 0 0
Corporate Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Total, estimated fair value 10,018 9,622
Corporate Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Total, estimated fair value $ 0 $ 0