Note 3 - Investment Securities - Scheduled Maturities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Due in one year or less, amortized cost	$ 2,284
Due in one year or less, fair value	2,279
Due after one year through five years, amortized cost	6,300
Due after one year through five years, fair value	6,248
Due after five years through ten years, amortized cost	2,223
Due after five years through ten years, fair value	2,161
Due after ten years, amortized cost	233,867
Due after ten years, fair value	202,335
Total investment securities available-for-sale, amortized cost	716,566	$ 698,362
Investment securities	620,579	617,162
Residential Mortgage-Backed Securities [Member]
Securities available-for-sale, without single maturity date, amortized cost	446,631
Securities available-for-sale, without single maturity date, fair value	385,992
Total investment securities available-for-sale, amortized cost	446,631	462,004
Investment securities	385,992	411,191
Commercial Mortgage-Backed Securities [Member]
Securities available-for-sale, without single maturity date, amortized cost	25,115
Securities available-for-sale, without single maturity date, fair value	21,418
Total investment securities available-for-sale, amortized cost	25,115	25,240
Investment securities	21,418	21,564
Other Debt Obligations [Member]
Securities available-for-sale, without single maturity date, amortized cost	146
Securities available-for-sale, without single maturity date, fair value	146
Total investment securities available-for-sale, amortized cost	146	165
Investment securities	$ 146	$ 165

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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