v3.26.3
Note 3 - Investment Securities Available for Sale - Amortized Cost and Estimated Fair Value of Investment Securities (Details) - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Investment securities available for sale, amortized cost $ 519,540 $ 491,490
Investment securities available for sale, gross unrealized gains 5 4,992
Investment securities available for sale, gross unrealized losses (44,377) (19,887)
Investment securities available for sale, Estimated fair value 475,168 476,595
Residential Mortgage Backed Securities Issued by US Government Sponsored Enterprises [Member]    
Investment securities available for sale, amortized cost 264,595 257,520
Investment securities available for sale, gross unrealized gains 3 2,709
Investment securities available for sale, gross unrealized losses (17,946) (7,064)
Investment securities available for sale, Estimated fair value 246,652 253,165
Commercial Mortgage Backed Securities Issued by US Government Agencies [Member]    
Investment securities available for sale, amortized cost 163,072 141,861
Investment securities available for sale, gross unrealized gains 0 1,245
Investment securities available for sale, gross unrealized losses (15,865) (8,342)
Investment securities available for sale, Estimated fair value 147,207 134,764
US States and Political Subdivisions Debt Securities [Member]    
Investment securities available for sale, amortized cost 91,873 92,109
Investment securities available for sale, gross unrealized gains 2 1,038
Investment securities available for sale, gross unrealized losses (10,566) (4,481)
Investment securities available for sale, Estimated fair value $ 81,309 $ 88,666