Annual report pursuant to Section 13 and 15(d)

Note 2 - Securities - Amortized Cost and Fair Value of Securities (Details)

v3.24.0.1
Note 2 - Securities - Amortized Cost and Fair Value of Securities (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Sep. 30, 2023
Dec. 31, 2022
Amortized cost $ 537,894 $ 539,318  
Gross unrealized gains 337 82  
Gross unrealized losses (29,433) (40,143)  
Securities available for sale, at fair value 508,798 499,257 $ 499,257
Amortized cost 331,523 348,765 348,765
Gross unrealized gains 284 415  
Gross unrealized losses (9,709) (16,530)  
Fair value 322,098 332,650 332,650
Held-to-maturity, amortized cost, due in one year or less 153,581    
Held-to-maturity, fair value, due in one year or less 151,849    
Available-for-sale, amortized cost, due in one year or less 126,515    
Available-for-sale, fair value, due in one year or less 124,986    
Held-to-maturity, amortized cost, due from one to five years 165,867    
Held-to-maturity, fair value, due from one to five years 158,034    
Available-for-sale, amortized cost, due from one to five years 281,413    
Available-for-sale, fair value, due from one to five years 266,356    
Held-to-maturity, amortized cost, due from five to ten years 12,075    
Held-to-maturity, fair value, due from five to ten years 12,215    
Available-for-sale, amortized cost, due from five to ten years 6,199    
Available-for-sale, fair value, due from five to ten years 6,120    
Held-to-maturity, amortized cost, due after ten years 0    
Held-to-maturity, fair value, due after ten years 0    
Available-for-sale, amortized cost, due after ten years 0    
Available-for-sale, fair value, due after ten years 0    
Securities held to maturity (fair value 2023 - $322,098 and 2022 - $332,650) 331,523 348,765 348,765
Debt securities, held to maturity, fair value 322,098 332,650 332,650
Held-to-maturity, amortized cost 331,523 348,765 348,765
Held-to-maturity, fair value 322,098 332,650 332,650
Available-for-sale, amortized cost 537,894 539,318  
Available-for-sale, fair value 508,798 $ 499,257 499,257
US Treasury and Government [Member]      
Amortized cost 256,234   240,921
Gross unrealized gains 25   23
Gross unrealized losses (10,767)   (16,310)
Securities available for sale, at fair value 245,492   224,634
Available-for-sale, amortized cost 256,234   240,921
Available-for-sale, fair value 245,492   224,634
US Government Agencies Debt Securities [Member]      
Amortized cost 123,767   128,165
Gross unrealized gains 173   0
Gross unrealized losses (12,604)   (14,347)
Securities available for sale, at fair value 111,336   113,818
Amortized cost 0    
Fair value 0    
Securities held to maturity (fair value 2023 - $322,098 and 2022 - $332,650) 0    
Debt securities, held to maturity, fair value 0    
Held-to-maturity, amortized cost 0    
Held-to-maturity, fair value 0    
Available-for-sale, amortized cost 123,767   128,165
Available-for-sale, fair value 111,336   113,818
Nontaxable Municipal Bonds [Member]      
Amortized cost 30,850   37,198
Gross unrealized gains 31   10
Gross unrealized losses (284)   (498)
Securities available for sale, at fair value 30,597   36,710
Amortized cost 80,294   97,458
Gross unrealized gains 284   415
Gross unrealized losses (1,189)   (2,853)
Fair value 79,389   95,020
Securities held to maturity (fair value 2023 - $322,098 and 2022 - $332,650) 80,294   97,458
Debt securities, held to maturity, fair value 79,389   95,020
Held-to-maturity, amortized cost 80,294   97,458
Held-to-maturity, fair value 79,389   95,020
Available-for-sale, amortized cost 30,850   37,198
Available-for-sale, fair value 30,597   36,710
Taxable Municipal Bonds [Member]      
Amortized cost 115,516   120,647
Gross unrealized gains 105   49
Gross unrealized losses (5,545)   (8,525)
Securities available for sale, at fair value 110,076   112,171
Available-for-sale, amortized cost 115,516   120,647
Available-for-sale, fair value 110,076   112,171
Corporate Bonds And Other Debt Securities [Member]      
Amortized cost 11,527   12,387
Gross unrealized gains 3   0
Gross unrealized losses (233)   (463)
Securities available for sale, at fair value 11,297   11,924
Available-for-sale, amortized cost 11,527   12,387
Available-for-sale, fair value 11,297   11,924
US Treasury Securities [Member]      
Amortized cost 251,229   251,307
Gross unrealized gains 0   0
Gross unrealized losses (8,520)   (13,677)
Fair value 242,709   237,630
Securities held to maturity (fair value 2023 - $322,098 and 2022 - $332,650) 251,229   251,307
Debt securities, held to maturity, fair value 242,709   237,630
Held-to-maturity, amortized cost 251,229   251,307
Held-to-maturity, fair value $ 242,709   $ 237,630