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v3.23.1

Note 3 - Investment Securities (Tables) | 3 Months Ended
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Mar. 31, 2023
Notes Tables |
Debt Securities, Available-for-Sale [Table Text Block] |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Allowance |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | for |
|  |  |  |  |  | Gross |  |  | Gross |  |  |  |  |  |  | Investment |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |  |  | Credit |
|  | Cost |  |  | Gains |  |  | Losses |  |  | Value |  |  | Losses |
|  | (dollars in thousands) |
March 31, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment securities available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Federal agency obligations |  | $ | 53,301 |  |  | $ | 1 |  |  | $ | (9,787 | ) |  | $ | 43,515 |  |  | $ | - |
Residential mortgage pass-through securities |  |  | 469,925 |  |  |  | 322 |  |  |  | (50,580 | ) |  |  | 419,667 |  |  |  | - |
Commercial mortgage pass-through securities |  |  | 25,424 |  |  |  | - |  |  |  | (3,464 | ) |  |  | 21,960 |  |  |  | - |
Obligations of U.S. states and political subdivisions |  |  | 155,101 |  |  |  | 255 |  |  |  | (17,060 | ) |  |  | 138,296 |  |  |  | - |
Corporate bonds and notes |  |  | 4,000 |  |  |  | - |  |  |  | (23 | ) |  |  | 3,977 |  |  |  | - |
Asset-backed securities |  |  | 1,505 |  |  |  | - |  |  |  | (51 | ) |  |  | 1,454 |  |  |  | - |
Other securities |  |  | 132 |  |  |  | - |  |  |  | - |  |  |  | 132 |  |  |  | - |
Total securities available-for-sale |  | $ | 709,388 |  |  | $ | 578 |  |  | $ | (80,965 | ) |  | $ | 629,001 |  |  | $ | - |
December 31, 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment securities available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Federal agency obligations |  | $ | 54,889 |  |  | $ | - |  |  | $ | (10,439 | ) |  | $ | 44,450 |  |  | $ | - |
Residential mortgage pass-through securities |  |  | 475,263 |  |  |  | 178 |  |  |  | (57,863 | ) |  |  | 417,578 |  |  |  | - |
Commercial mortgage pass-through securities |  |  | 25,485 |  |  |  | - |  |  |  | (4,381 | ) |  |  | 21,104 |  |  |  | - |
Obligations of U.S. states and political subdivisions |  |  | 157,247 |  |  |  | 111 |  |  |  | (14,462 | ) |  |  | 142,896 |  |  |  | - |
Corporate bonds and notes |  |  | 7,000 |  |  |  | - |  |  |  | (26 | ) |  |  | 6,974 |  |  |  | - |
Asset-backed securities |  |  | 1,673 |  |  |  | - |  |  |  | (33 | ) |  |  | 1,640 |  |  |  | - |
Other securities |  |  | 242 |  |  |  | - |  |  |  | - |  |  |  | 242 |  |  |  | - |
Total securities available-for-sale |  | $ | 721,799 |  |  | $ | 289 |  |  | $ | (87,204 | ) |  | $ | 634,884 |  |  | $ | - |
Investments Classified by Contractual Maturity Date [Table Text Block] |
|  | March 31, 2023 |
|  | Amortized |  |  | Fair |
|  | Cost |  |  | Value |
|  | (dollars in thousands) |
Investment securities available-for-sale: |  |  |  |  |  |  |  |
Due in one year or less |  | $ | 2,453 |  |  | $ | 2,453 |
Due after one year through five years |  |  | 4,079 |  |  |  | 4,057 |
Due after five years through ten years |  |  | 2,626 |  |  |  | 2,620 |
Due after ten years |  |  | 204,749 |  |  |  | 178,112 |
Residential mortgage pass-through securities |  |  | 469,925 |  |  |  | 419,667 |
Commercial mortgage pass-through securities |  |  | 25,424 |  |  |  | 21,960 |
Other securities |  |  | 132 |  |  |  | 132 |
Total securities available-for-sale |  | $ | 709,388 |  |  | $ | 629,001 |
Schedule of Unrealized Loss on Investments [Table Text Block] |
|  | March 31, 2023 |
|  | Total |  |  | Less than 12 Months |  |  | 12 Months or Longer |
|  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
|  | Value |  |  | Losses |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |
|  | (dollars in thousands) |
Investment securities available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Federal agency obligations |  | $ | 43,301 |  |  | $ | (9,787 | ) |  | $ | 2,798 |  |  | $ | (209 | ) |  | $ | 40,503 |  |  | $ | (9,578 | )
Residential mortgage pass-through securities |  |  | 404,073 |  |  |  | (50,580 | ) |  |  | 153,706 |  |  |  | (4,627 | ) |  |  | 250,367 |  |  |  | (45,953 | )
Commercial mortgage pass-through securities |  |  | 21,960 |  |  |  | (3,464 | ) |  |  | 6,540 |  |  |  | (460 | ) |  |  | 15,420 |  |  |  | (3,004 | )
Obligations of U.S. states and political subdivisions |  |  | 118,428 |  |  |  | (17,060 | ) |  |  | 26,397 |  |  |  | (1,194 | ) |  |  | 92,031 |  |  |  | (15,866 | )
Corporate bonds and notes |  |  | 1,977 |  |  |  | (23 | ) |  |  | 1,977 |  |  |  | (23 | ) |  |  | - |  |  |  | - |
Asset-backed securities |  |  | 1,454 |  |  |  | (51 | ) |  |  | 390 |  |  |  | (21 | ) |  |  | 1,064 |  |  |  | (30 | )
Total temporarily impaired securities |  | $ | 591,193 |  |  | $ | (80,965 | ) |  | $ | 191,808 |  |  | $ | (6,534 | ) |  | $ | 399,385 |  |  | $ | (74,431 | )
|  | December 31, 2022 |
|  | Total |  |  | Less than 12 Months |  |  | 12 Months or Longer |
|  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
|  | Value |  |  | Losses |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |
|  | (dollars in thousands) |
Investment securities available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Federal agency obligations |  | $ | 44,451 |  |  | $ | (10,439 | ) |  | $ | 20,517 |  |  | $ | (1,831 | ) |  | $ | 23,934 |  |  | $ | (8,608 | )
Residential mortgage pass-through securities |  |  | 403,039 |  |  |  | (57,863 | ) |  |  | 218,918 |  |  |  | (13,869 | ) |  |  | 184,121 |  |  |  | (43,994 | )
Commercial mortgage pass-through securities |  |  | 21,105 |  |  |  | (4,381 | ) |  |  | 14,523 |  |  |  | (2,304 | ) |  |  | 6,582 |  |  |  | (2,077 | )
Obligations of U.S. states and political subdivisions |  |  | 133,265 |  |  |  | (14,462 | ) |  |  | 47,446 |  |  |  | (3,404 | ) |  |  | 85,819 |  |  |  | (11,058 | )
Corporate bonds and notes |  |  | 4,973 |  |  |  | (26 | ) |  |  | 4,973 |  |  |  | (26 | ) |  |  | - |  |  |  | - |
Asset-backed securities |  |  | 1,640 |  |  |  | (33 | ) |  |  | 1,048 |  |  |  | (16 | ) |  |  | 592 |  |  |  | (17 | )
Total temporarily impaired securities |  | $ | 608,473 |  |  | $ | (87,204 | ) |  | $ | 307,425 |  |  | $ | (21,450 | ) |  | $ | 301,048 |  |  | $ | (65,754 | )

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