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Note 6 - Investments and Equity Securities- Amortized Cost and Fair Values of Securities Available for Sale (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Amortized cost $ 190,752 [1] $ 191,146 [2]
Gross unrealized gains 225 223
Gross unrealized losses (21,082) (20,590)
Investment securities available for sale, at fair value 169,895 170,779
Subordinated Debt Securities [Member]    
Amortized cost 34,300 [1] 34,300 [2]
Gross unrealized gains 116 70
Gross unrealized losses (1,883) (2,451)
Investment securities available for sale, at fair value 32,533 31,919
Nontaxable Municipal Bonds [Member]    
Amortized cost 148,122 [1] 149,881 [2]
Gross unrealized gains 49 153
Gross unrealized losses (18,704) (17,492)
Investment securities available for sale, at fair value 129,467 132,542
Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member]    
Amortized cost 8,330 [1] 6,965 [2]
Gross unrealized gains 60 0
Gross unrealized losses (495) (647)
Investment securities available for sale, at fair value $ 7,895 $ 6,318
[1] Amortized cost excludes accrued interest receivable of $1.7 million for the period ending June 30, 2024.
[2] Amortized cost excludes accrued interest receivable of $1.7 million for the period ending December 31, 2023.