Annual report pursuant to Section 13 and 15(d)

Note 2 - Securities - Schedule of Securities with Unrealized Losses (Details)

v3.24.0.1
Note 2 - Securities - Schedule of Securities with Unrealized Losses (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Available-for-sale, fair value, less than 12 months $ 37,328 $ 322,393
Available-for-sale, accumulated loss, less than 12 months (161) (15,211)
Available-for-sale, fair value, more than 12 months 417,623 142,056
Available-for-sale, accumulated loss, more than 12 months (29,272) (24,932)
Available-for-sale, fair value 454,951 464,449
Available-for-sale, accumulated loss (29,433) (40,143)
Held-to-maturity, fair value, less than 12 months 673 295,301
Held-to-maturity, accumulated loss, less than 12 months (2) (15,991)
Held-to-maturity, fair value, more than 12 months 288,222 21,721
Held-to-maturity, accumulated loss, more than 12 months (9,707) (539)
Held-for-maturity, fair value 288,895 317,022
Held-for-sale, accumulated loss (9,709) (16,530)
US Treasury and Government [Member]    
Available-for-sale, fair value, less than 12 months 15,615 144,796
Available-for-sale, accumulated loss, less than 12 months (41) (6,230)
Available-for-sale, fair value, more than 12 months 215,712 66,008
Available-for-sale, accumulated loss, more than 12 months (10,726) (10,080)
Available-for-sale, fair value 231,327 210,804
Available-for-sale, accumulated loss (10,767) (16,310)
US Government Agencies Debt Securities [Member]    
Available-for-sale, fair value, less than 12 months 8,574 64,427
Available-for-sale, accumulated loss, less than 12 months (52) (4,789)
Available-for-sale, fair value, more than 12 months 83,893 41,340
Available-for-sale, accumulated loss, more than 12 months (12,552) (9,558)
Available-for-sale, fair value 92,467 105,767
Available-for-sale, accumulated loss (12,604) (14,347)
Nontaxable Municipal Bonds [Member]    
Available-for-sale, fair value, less than 12 months 8,472 31,337
Available-for-sale, accumulated loss, less than 12 months (50) (498)
Available-for-sale, fair value, more than 12 months 13,296 0
Available-for-sale, accumulated loss, more than 12 months (234) 0
Available-for-sale, fair value 21,768 31,337
Available-for-sale, accumulated loss (284) (498)
Held-to-maturity, fair value, less than 12 months 673 57,671
Held-to-maturity, accumulated loss, less than 12 months (2) (2,314)
Held-to-maturity, fair value, more than 12 months 45,513 21,721
Held-to-maturity, accumulated loss, more than 12 months (1,187) (539)
Held-for-maturity, fair value 46,186 79,392
Held-for-sale, accumulated loss (1,189) (2,853)
Taxable Municipal Bonds [Member]    
Available-for-sale, fair value, less than 12 months 4,667 71,165
Available-for-sale, accumulated loss, less than 12 months (18) (3,337)
Available-for-sale, fair value, more than 12 months 93,900 33,452
Available-for-sale, accumulated loss, more than 12 months (5,527) (5,188)
Available-for-sale, fair value 98,567 104,617
Available-for-sale, accumulated loss (5,545) (8,525)
Corporate Bonds And Other Debt Securities [Member]    
Available-for-sale, fair value, less than 12 months 0 10,668
Available-for-sale, accumulated loss, less than 12 months 0 (357)
Available-for-sale, fair value, more than 12 months 10,822 1,256
Available-for-sale, accumulated loss, more than 12 months (233) (106)
Available-for-sale, fair value 10,822 11,924
Available-for-sale, accumulated loss (233) (463)
US Treasury Securities [Member]    
Held-to-maturity, fair value, less than 12 months 0 237,630
Held-to-maturity, accumulated loss, less than 12 months 0 (13,677)
Held-to-maturity, fair value, more than 12 months 242,709 0
Held-to-maturity, accumulated loss, more than 12 months (8,520) 0
Held-for-maturity, fair value 242,709 237,630
Held-for-sale, accumulated loss $ (8,520) $ (13,677)