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Note 6 - Investments and Equity Securities- Amortized Cost and Fair Values of Securities Available for Sale (Details) - USD ($)
$ in Thousands
Jun. 30, 2024
Dec. 31, 2023
Amortized cost $ 191,067 [1] $ 191,146 [2]
Gross unrealized gains 76 223
Gross unrealized losses (24,719) (20,590)
Investment securities available for sale, at fair value 166,424 170,779
Subordinated Debt Securities [Member]    
Amortized cost 34,300 [1] 34,300 [2]
Gross unrealized gains 57 70
Gross unrealized losses (2,427) (2,451)
Investment securities available for sale, at fair value 31,930 31,919
Nontaxable Municipal Bonds [Member]    
Amortized cost 148,254 [1] 149,881 [2]
Gross unrealized gains 7 153
Gross unrealized losses (21,573) (17,492)
Investment securities available for sale, at fair value 126,688 132,542
Mortgage-Backed Security, Issued by US Government-Sponsored Enterprise [Member]    
Amortized cost 8,513 [1] 6,965 [2]
Gross unrealized gains 12 0
Gross unrealized losses (719) (647)
Investment securities available for sale, at fair value $ 7,806 $ 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.