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Note 4 - Investment Securities (Tables) | 3 Months Ended
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Mar. 31, 2024
Notes Tables |
Schedule of Available-for-Sale Securities Reconciliation [Table Text Block] |
|  |  |  |  |  | Gross |  |  | Gross |  |  |  |  |
|  | Amortized |  |  | unrealized |  |  | unrealized |  |  | Fair |
(dollars in thousands) |  | cost |  |  | gains |  |  | losses |  |  | value |
March 31, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Held-to-maturity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency - GSE |  | $ | 81,656 |  |  | $ | - |  |  | $ | (8,682 | ) |  | $ | 72,974 |
Obligations of states and political subdivisions |  |  | 142,956 |  |  |  | - |  |  |  | (21,957 | ) |  |  | 120,999 |
Total held-to-maturity securities |  | $ | 224,612 |  |  | $ | - |  |  | $ | (30,639 | ) |  | $ | 193,973 |
Available-for-sale debt securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency - GSE |  | $ | 31,201 |  |  | $ | - |  |  | $ | (3,770 | ) |  | $ | 27,431 |
Obligations of states and political subdivisions |  |  | 137,025 |  |  |  | - |  |  |  | (15,953 | ) |  |  | 121,072 |
MBS - GSE residential |  |  | 220,189 |  |  |  | - |  |  |  | (34,288 | ) |  |  | 185,901 |
Total available-for-sale debt securities |  | $ | 388,415 |  |  | $ | - |  |  | $ | (54,011 | ) |  | $ | 334,404 |
|  |  |  |  |  | Gross |  |  | Gross |  |  |  |  |
|  | Amortized |  |  | unrealized |  |  | unrealized |  |  | Fair |
(dollars in thousands) |  | cost |  |  | gains |  |  | losses |  |  | value |
December 31, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Held-to-maturity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency - GSE |  | $ | 81,382 |  |  | $ | - |  |  | $ | (7,561 | ) |  | $ | 73,821 |
Obligations of states and political subdivisions |  |  | 142,851 |  |  |  | - |  |  |  | (19,496 | ) |  |  | 123,355 |
Total held-to-maturity securities |  | $ | 224,233 |  |  | $ | - |  |  | $ | (27,057 | ) |  | $ | 197,176 |
Available-for-sale debt securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency - GSE |  | $ | 31,178 |  |  | $ | - |  |  | $ | (3,633 | ) |  | $ | 27,545 |
Obligations of states and political subdivisions |  |  | 138,217 |  |  |  | 1 |  |  |  | (15,421 | ) |  |  | 122,797 |
MBS - GSE residential |  |  | 226,240 |  |  |  | - |  |  |  | (32,542 | ) |  |  | 193,698 |
Total available-for-sale debt securities |  | $ | 395,635 |  |  | $ | 1 |  |  | $ | (51,596 | ) |  | $ | 344,040 |
Investments Classified by Contractual Maturity Date [Table Text Block] |
|  | Amortized |  |  | Fair |
(dollars in thousands) |  | cost |  |  | value |
Held-to-maturity securities: |  |  |  |  |  |  |  |
Due in one year or less |  | $ | - |  |  | $ | - |
Due after one year through five years |  |  | 29,242 |  |  |  | 27,031 |
Due after five years through ten years |  |  | 72,477 |  |  |  | 63,523 |
Due after ten years |  |  | 122,893 |  |  |  | 103,419 |
Total held-to-maturity securities |  | $ | 224,612 |  |  | $ | 193,973 |
Available-for-sale securities: |  |  |  |  |  |  |  |
Debt securities: |  |  |  |  |  |  |  |
Due in one year or less |  | $ | 2,748 |  |  | $ | 2,666 |
Due after one year through five years |  |  | 30,408 |  |  |  | 27,307 |
Due after five years through ten years |  |  | 24,939 |  |  |  | 21,109 |
Due after ten years |  |  | 109,807 |  |  |  | 97,421 |
MBS - GSE residential |  |  | 220,189 |  |  |  | 185,901 |
Total available-for-sale debt securities |  | $ | 388,091 |  |  | $ | 334,404 |
Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] |
|  | Less than 12 months |  |  | More than 12 months |  |  | Total |
|  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
(dollars in thousands) |  | value |  |  | losses |  |  | value |  |  | losses |  |  | value |  |  | losses |
March 31, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency - GSE |  | $ | - |  |  | $ | - |  |  | $ | 100,405 |  |  | $ | (12,452 | ) |  | $ | 100,405 |  |  | $ | (12,452 | )
Obligations of states and political subdivisions |  |  | 1,611 |  |  |  | (35 | ) |  |  | 240,460 |  |  |  | (37,551 | ) |  |  | 242,071 |  |  |  | (37,586 | )
MBS - GSE residential |  |  | - |  |  |  | - |  |  |  | 185,901 |  |  |  | (33,964 | ) |  |  | 185,901 |  |  |  | (33,964 | )
Total |  | $ | 1,611 |  |  | $ | (35 | ) |  | $ | 526,766 |  |  | $ | (83,967 | ) |  | $ | 528,377 |  |  | $ | (84,002 | )
Number of securities |  |  | 3 |  |  |  |  |  |  |  | 415 |  |  |  |  |  |  |  | 418 |  |  |  |  |
December 31, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency - GSE |  | $ | - |  |  | $ | - |  |  | $ | 101,366 |  |  | $ | (11,194 | ) |  | $ | 101,366 |  |  | $ | (11,194 | )
Obligations of states and political subdivisions |  |  | 781 |  |  |  | (22 | ) |  |  | 244,224 |  |  |  | (33,814 | ) |  |  | 245,005 |  |  |  | (33,836 | )
MBS - GSE residential |  |  | - |  |  |  | - |  |  |  | 193,698 |  |  |  | (31,462 | ) |  |  | 193,698 |  |  |  | (31,462 | )
Total |  | $ | 781 |  |  | $ | (22 | ) |  | $ | 539,288 |  |  | $ | (76,470 | ) |  | $ | 540,069 |  |  | $ | (76,492 | )
Number of securities |  |  | 2 |  |  |  |  |  |  |  | 414 |  |  |  |  |  |  |  | 416 |  |  |  |  |

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