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Note 6 - Loans and the Allowance for Credit Losses (Tables) | 6 Months Ended
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Jun. 30, 2025
Notes Tables |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] |
|  | June 30, 2025 |  |  | December 31, 2024 |
|  | (dollars in thousands) |
Commercial |  | $ | 1,607,528 |  |  | $ | 1,532,730 |
Commercial real estate |  |  | 7,624,033 |  |  |  | 5,880,679 |
Commercial construction |  |  | 681,222 |  |  |  | 616,246 |
Residential real estate |  |  | 1,254,646 |  |  |  | 249,691 |
Consumer |  |  | 1,709 |  |  |  | 1,136 |
Gross loans |  |  | 11,169,138 |  |  |  | 8,280,482 |
Net deferred loan fees |  |  | (4,661 | ) |  |  | (5,672 | )
Total loans receivable |  | $ | 11,164,477 |  |  | $ | 8,274,810 |
Schedule of Loans Held-for-sale [Table Text Block] |
|  | June 30, 2025 |  |  | December 31, 2024 |
|  | (dollars in thousands) |
Residential real estate |  | $ | 1,027 |  |  | $ | 743 |
Financing Receivable, Nonaccrual [Table Text Block] |
|  | June 30, 2025 |
|  | Nonaccrual loans with ACL |  |  | Nonaccrual loans without ACL |  |  | Total nonaccrual loans |
|  | (dollars in thousands) |
Commercial |  | $ | 2,175 |  |  | $ | 11,295 |  |  | $ | 13,470 |
Commercial real estate |  |  | 666 |  |  |  | 20,653 |  |  |  | 21,319 |
Commercial construction |  |  | - |  |  |  | 2,204 |  |  |  | 2,204 |
Residential real estate |  |  | 440 |  |  |  | 1,795 |  |  |  | 2,235 |
Total |  | $ | 3,281 |  |  | $ | 35,947 |  |  | $ | 39,228 |
|  | December 31, 2024 |
|  | Nonaccrual loans with ACL |  |  | Nonaccrual loans without ACL |  |  | Total nonaccrual loans |
|  | (dollars in thousands) |
Commercial |  | $ | 1,744 |  |  | $ | 14,487 |  |  | $ | 16,231 |
Commercial real estate |  |  | 3,822 |  |  |  | 32,664 |  |  |  | 36,486 |
Commercial construction |  |  | - |  |  |  | 2,204 |  |  |  | 2,204 |
Residential real estate |  |  | 333 |  |  |  | 2,056 |  |  |  | 2,389 |
Total |  | $ | 5,899 |  |  | $ | 51,411 |  |  | $ | 57,310 |
Schedule of Loans Purchase With Credit Deterioration [Table Text Block] |
(dollars in thousands) |  | June 30, 2025 |
Commercial |  | $ | 7,443 |
Commercial real estate |  |  | 228,576 |
Commercial construction |  |  | — |
Residential real estate |  |  | 1,822 |
Consumer |  |  | — |
Total purchased credit-deteriorated loans |  |  | 237,841 |
Financing Receivable Origination And Risk Designation [Table Text Block] |
|  | Term loans amortized cost basis by origination year |  |  |  |  |  |  |
|  | 2025 |  |  | 2024 |  |  | 2023 |  |  | 2022 |  |  | 2021 |  |  | Prior |  |  | Revolving Loans |  |  | Total Gross Loans |
Commercial |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass |  | $ | 61,680 |  |  | $ | 87,123 |  |  | $ | 142,634 |  |  | $ | 196,011 |  |  | $ | 228,357 |  |  | $ | 123,836 |  |  | $ | 712,620 |  |  | $ | 1,552,261 |
Special mention |  |  | - |  |  |  | 1,896 |  |  |  | - |  |  |  | 314 |  |  |  | - |  |  |  | 4,999 |  |  |  | 596 |  |  |  | 7,805 |
Substandard |  |  | - |  |  |  | - |  |  |  | 3,857 |  |  |  | 4,576 |  |  |  | 2,603 |  |  |  | 18,771 |  |  |  | 17,655 |  |  |  | 47,462 |
Doubtful |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Total commercial |  | $ | 61,680 |  |  | $ | 89,019 |  |  | $ | 146,491 |  |  | $ | 200,901 |  |  | $ | 230,960 |  |  | $ | 147,606 |  |  | $ | 730,871 |  |  | $ | 1,607,528 |
YTD gross charge-offs |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | 1,669 |  |  | $ | - |  |  | $ | 467 |  |  | $ | 875 |  |  | $ | 3,011 |
Commercial real estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass |  | $ | 291,020 |  |  | $ | 471,351 |  |  | $ | 376,511 |  |  | $ | 1,779,950 |  |  | $ | 1,864,697 |  |  | $ | 2,210,694 |  |  | $ | 422,045 |  |  | $ | 7,416,268 |
Special mention |  |  | - |  |  |  | 4,051 |  |  |  | - |  |  |  | 47,290 |  |  |  | 841 |  |  |  | 77,477 |  |  |  | - |  |  |  | 129,659 |
Substandard |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 15,069 |  |  |  | 8,265 |  |  |  | 54,772 |  |  |  | - |  |  |  | 78,106 |
Doubtful |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Total commercial real estate |  | $ | 291,020 |  |  | $ | 475,402 |  |  | $ | 376,511 |  |  | $ | 1,842,309 |  |  | $ | 1,873,803 |  |  | $ | 2,342,943 |  |  | $ | 422,045 |  |  | $ | 7,624,033 |
YTD gross charge-offs |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | 5,582 |  |  | $ | - |  |  | $ | 5,582 |
Commercial construction |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass |  | $ | 487 |  |  | $ | 25,440 |  |  | $ | - |  |  | $ | 3,663 |  |  | $ | - |  |  | $ | 4,362 |  |  | $ | 645,066 |  |  | $ | 679,018 |
Special mention |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Substandard |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 2,204 |  |  |  | 2,204 |
Doubtful |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Total commercial construction |  | $ | 487 |  |  | $ | 25,440 |  |  | $ | - |  |  | $ | 3,663 |  |  | $ | - |  |  | $ | 4,362 |  |  | $ | 647,270 |  |  | $ | 681,222 |
YTD gross charge-offs |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |
Residential real estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass |  | $ | 28,589 |  |  | $ | 26,696 |  |  | $ | 39,426 |  |  | $ | 261,820 |  |  | $ | 167,204 |  |  | $ | 663,073 |  |  | $ | 60,522 |  |  | $ | 1,247,330 |
Special mention |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 627 |  |  |  | 2,750 |  |  |  | 3,377 |
Substandard |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 632 |  |  |  | - |  |  |  | 3,174 |  |  |  | 133 |  |  |  | 3,939 |
Doubtful |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Total residential real estate |  | $ | 28,589 |  |  | $ | 26,696 |  |  | $ | 39,426 |  |  | $ | 262,452 |  |  | $ | 167,204 |  |  | $ | 666,874 |  |  | $ | 63,405 |  |  | $ | 1,254,646 |
YTD gross charge-offs |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |
Consumer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass |  | $ | 1,554 |  |  | $ | 19 |  |  | $ | 21 |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | 115 |  |  | $ | 1,709 |
Special mention |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Substandard |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Doubtful |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Total consumer |  | $ | 1,554 |  |  | $ | 19 |  |  | $ | 21 |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | 115 |  |  | $ | 1,709 |
YTD gross charge-offs |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | 1 |  |  | $ | 1 |
Total |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass |  | $ | 383,330 |  |  | $ | 610,629 |  |  | $ | 558,592 |  |  | $ | 2,241,444 |  |  | $ | 2,260,258 |  |  | $ | 3,001,965 |  |  | $ | 1,840,368 |  |  | $ | 10,896,586 |
Special mention |  |  | - |  |  |  | 5,947 |  |  |  | - |  |  |  | 47,604 |  |  |  | 841 |  |  |  | 83,103 |  |  |  | 3,346 |  |  |  | 140,841 |
Substandard |  |  | - |  |  |  | - |  |  |  | 3,857 |  |  |  | 20,277 |  |  |  | 10,868 |  |  |  | 76,717 |  |  |  | 19,992 |  |  |  | 131,711 |
Doubtful |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Grand total |  | $ | 383,330 |  |  | $ | 616,576 |  |  | $ | 562,449 |  |  | $ | 2,309,325 |  |  | $ | 2,271,967 |  |  | $ | 3,161,785 |  |  | $ | 1,863,706 |  |  | $ | 11,169,138 |
YTD gross charge-offs |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | 1,669 |  |  | $ | - |  |  | $ | 6,049 |  |  | $ | 876 |  |  | $ | 8,594 |
|  | Term loans amortized cost basis by origination year |  |  |  |  |  |  |
|  | 2024 |  |  | 2023 |  |  | 2022 |  |  | 2021 |  |  | 2020 |  |  | Prior |  |  | Revolving Loans |  |  | Total Gross Loans |
Commercial |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass |  | $ | 67,298 |  |  | $ | 157,067 |  |  | $ | 194,602 |  |  | $ | 237,065 |  |  | $ | 29,717 |  |  | $ | 111,841 |  |  | $ | 678,206 |  |  | $ | 1,475,796 |
Special mention |  |  | 1,908 |  |  |  | - |  |  |  | 2,817 |  |  |  | 2,538 |  |  |  | 1,643 |  |  |  | 6,209 |  |  |  | 17,491 |  |  |  | 32,606 |
Substandard |  |  | - |  |  |  | 3,019 |  |  |  | 3,705 |  |  |  | 217 |  |  |  | - |  |  |  | 15,844 |  |  |  | 1,543 |  |  |  | 24,328 |
Doubtful |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Total commercial |  | $ | 69,206 |  |  | $ | 160,086 |  |  | $ | 201,124 |  |  | $ | 239,820 |  |  | $ | 31,360 |  |  | $ | 133,894 |  |  | $ | 697,240 |  |  | $ | 1,532,730 |
YTD gross charge-offs |  | $ | - |  |  | $ | - |  |  | $ | 1,003 |  |  | $ | 49 |  |  | $ | - |  |  | $ | 316 |  |  | $ | 1,918 |  |  | $ | 3,286 |
Commercial real estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass |  | $ | 408,314 |  |  | $ | 268,533 |  |  | $ | 1,424,209 |  |  | $ | 1,510,087 |  |  | $ | 339,553 |  |  | $ | 1,357,858 |  |  | $ | 415,286 |  |  | $ | 5,723,840 |
Special mention |  |  | - |  |  |  | - |  |  |  | 53,642 |  |  |  | - |  |  |  | - |  |  |  | 59,719 |  |  |  | - |  |  |  | 113,361 |
Substandard |  |  | - |  |  |  | - |  |  |  | 3,822 |  |  |  | 1,846 |  |  |  | 1,752 |  |  |  | 36,058 |  |  |  | - |  |  |  | 43,478 |
Doubtful |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Total commercial real estate |  | $ | 408,314 |  |  | $ | 268,533 |  |  | $ | 1,481,673 |  |  | $ | 1,511,933 |  |  | $ | 341,305 |  |  | $ | 1,453,635 |  |  | $ | 415,286 |  |  | $ | 5,880,679 |
YTD gross charge-offs |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | 10,416 |  |  | $ | - |  |  | $ | 10,416 |
Commercial construction |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass |  | $ | 15,390 |  |  | $ | - |  |  | $ | 2,137 |  |  | $ | 8,995 |  |  | $ | 6,518 |  |  | $ | - |  |  | $ | 581,002 |  |  | $ | 614,042 |
Special mention |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Substandard |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 2,204 |  |  |  | 2,204 |
Doubtful |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Total commercial construction |  | $ | 15,390 |  |  | $ | - |  |  | $ | 2,137 |  |  | $ | 8,995 |  |  | $ | 6,518 |  |  | $ | - |  |  | $ | 583,206 |  |  | $ | 616,246 |
YTD gross charge-offs |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |
Residential real estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass |  | $ | 17,763 |  |  | $ | 14,542 |  |  | $ | 39,197 |  |  | $ | 21,925 |  |  | $ | 17,339 |  |  | $ | 96,657 |  |  | $ | 36,471 |  |  | $ | 243,894 |
Special mention |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 635 |  |  |  | 2,773 |  |  |  | 3,408 |
Substandard |  |  | - |  |  |  | - |  |  |  | 633 |  |  |  | - |  |  |  | 1,157 |  |  |  | 364 |  |  |  | 235 |  |  |  | 2,389 |
Doubtful |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Total residential real estate |  | $ | 17,763 |  |  | $ | 14,542 |  |  | $ | 39,830 |  |  | $ | 21,925 |  |  | $ | 18,496 |  |  | $ | 97,656 |  |  | $ | 39,479 |  |  | $ | 249,691 |
YTD gross charge-offs |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |
Consumer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass |  | $ | 1,015 |  |  | $ | 24 |  |  | $ | 1 |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | 96 |  |  | $ | 1,136 |
Special mention |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Substandard |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Doubtful |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Total consumer |  | $ | 1,015 |  |  | $ | 24 |  |  | $ | 1 |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | 96 |  |  | $ | 1,136 |
YTD gross charge-offs |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | - |
Total |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pass |  | $ | 509,780 |  |  | $ | 440,166 |  |  | $ | 1,660,146 |  |  | $ | 1,778,072 |  |  | $ | 393,127 |  |  | $ | 1,566,356 |  |  | $ | 1,711,061 |  |  | $ | 8,058,708 |
Special mention |  |  | 1,908 |  |  |  | - |  |  |  | 56,459 |  |  |  | 2,538 |  |  |  | 1,643 |  |  |  | 66,563 |  |  |  | 20,264 |  |  |  | 149,375 |
Substandard |  |  | - |  |  |  | 3,019 |  |  |  | 8,160 |  |  |  | 2,063 |  |  |  | 2,909 |  |  |  | 52,266 |  |  |  | 3,982 |  |  |  | 72,399 |
Doubtful |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Grand total |  | $ | 511,688 |  |  | $ | 443,185 |  |  | $ | 1,724,765 |  |  | $ | 1,782,673 |  |  | $ | 397,679 |  |  | $ | 1,685,185 |  |  | $ | 1,735,307 |  |  | $ | 8,280,482 |
YTD gross charge-offs |  | $ | - |  |  | $ | - |  |  | $ | 1,003 |  |  | $ | 49 |  |  | $ | - |  |  | $ | 10,732 |  |  | $ | 1,918 |  |  | $ | 13,702 |
Financing Receivable, Collateral Dependent [Table Text Block] |
|  | June 30, 2025 |
|  | Real Estate |  |  | Other |  |  | Total |
|  | (dollars in thousands) |
Commercial |  | $ | 9,023 |  |  | $ | 9,246 |  |  | $ | 18,269 |
Commercial real estate |  |  | 249,896 |  |  |  | - |  |  |  | 249,896 |
Commercial construction |  |  | 2,204 |  |  |  | - |  |  |  | 2,204 |
Residential real estate |  |  | 3,858 |  |  |  | - |  |  |  | 3,858 |
Total |  | $ | 264,981 |  |  | $ | 9,246 |  |  | $ | 274,227 |
|  | December 31, 2024 |
|  | Real Estate |  |  | Other |  |  | Total |
|  | (dollars in thousands) |
Commercial |  | $ | 2,308 |  |  | $ | 9,222 |  |  | $ | 11,530 |
Commercial real estate |  |  | 36,486 |  |  |  | - |  |  |  | 36,486 |
Commercial construction |  |  | 2,204 |  |  |  | - |  |  |  | 2,204 |
Residential real estate |  |  | 2,056 |  |  |  | - |  |  |  | 2,056 |
Total |  | $ | 43,054 |  |  | $ | 9,222 |  |  | $ | 52,276 |
Financing Receivable, Past Due [Table Text Block] |
|  | June 30, 2025 |
|  | 30-59 Days Past Due |  |  | 60-89 Days Past Due |  |  | 90 Days or Greater Past Due and Still Accruing |  |  | Nonaccrual |  |  | Total Past Due and Nonaccrual |  |  | Current |  |  | Gross Loans |
|  | (dollars in thousands) |
Commercial |  | $ | 151 |  |  | $ | 409 |  |  | $ | - |  |  | $ | 13,470 |  |  | $ | 14,030 |  |  | $ | 1,593,498 |  |  | $ | 1,607,528 |
Commercial real estate |  |  | - |  |  |  | 12,800 |  |  |  | - |  |  |  | 21,319 |  |  |  | 34,119 |  |  |  | 7,589,914 |  |  |  | 7,624,033 |
Commercial construction |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 2,204 |  |  |  | 2,204 |  |  |  | 679,018 |  |  |  | 681,222 |
Residential real estate |  |  | 227 |  |  |  | 930 |  |  |  | - |  |  |  | 2,235 |  |  |  | 3,392 |  |  |  | 1,251,254 |  |  |  | 1,254,646 |
Consumer |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 1,709 |  |  |  | 1,709 |
Total |  | $ | 378 |  |  | $ | 14,139 |  |  | $ | - |  |  | $ | 39,228 |  |  | $ | 53,745 |  |  | $ | 11,115,393 |  |  | $ | 11,169,138 |
|  | December 31, 2024 |
|  | 30-59 Days Past Due |  |  | 60-89 Days Past Due |  |  | 90 Days or Greater Past Due and Still Accruing |  |  | Nonaccrual |  |  | Total Past Due and Nonaccrual |  |  | Current |  |  | Gross Loans |
|  | (dollars in thousands) |
Commercial |  | $ | 1,340 |  |  | $ | - |  |  | $ | - |  |  | $ | 16,231 |  |  | $ | 17,571 |  |  | $ | 1,515,159 |  |  | $ | 1,532,730 |
Commercial real estate |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 36,486 |  |  |  | 36,486 |  |  |  | 5,844,193 |  |  |  | 5,880,679 |
Commercial construction |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 2,204 |  |  |  | 2,204 |  |  |  | 614,042 |  |  |  | 616,246 |
Residential real estate |  |  | 1,991 |  |  |  | - |  |  |  | - |  |  |  | 2,389 |  |  |  | 4,380 |  |  |  | 245,311 |  |  |  | 249,691 |
Consumer |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 1,136 |  |  |  | 1,136 |
Total |  | $ | 3,331 |  |  | $ | - |  |  | $ | - |  |  | $ | 57,310 |  |  | $ | 60,641 |  |  | $ | 8,219,841 |  |  | $ | 8,280,482 |
Schedule of Evaluation of Impairment on Financing Receivables [Table Text Block] |
|  | June 30, 2025 |
|  | Commercial |  |  | Commercial real estate |  |  | Commercial construction |  |  | Residential real estate |  |  | Consumer |  |  | Total |
|  | (dollars in thousands) |
Allowance for credit losses – loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually analyzed |  | $ | 641 |  |  | $ | 33 |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | 674 |
Collectively evaluated |  |  | 19,358 |  |  |  | 72,914 |  |  |  | 5,422 |  |  |  | 14,461 |  |  |  | 29 |  |  |  | 112,184 |
Acquired with deteriorated credit quality |  |  | 962 |  |  |  | 42,256 |  |  |  | - |  |  |  | 114 |  |  |  | - |  |  |  | 43,332 |
Total |  | $ | 20,961 |  |  | $ | 115,203 |  |  | $ | 5,422 |  |  | $ | 14,575 |  |  | $ | 29 |  |  | $ | 156,190 |
Gross loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually analyzed |  | $ | 12,908 |  |  | $ | 21,320 |  |  | $ | 2,204 |  |  | $ | 2,036 |  |  | $ | - |  |  | $ | 38,468 |
Collectively evaluated |  |  | 1,587,178 |  |  |  | 7,374,137 |  |  |  | 679,018 |  |  |  | 1,250,788 |  |  |  | 1,709 |  |  |  | 10,892,830 |
Acquired with deteriorated credit quality |  |  | 7,442 |  |  |  | 228,576 |  |  |  | - |  |  |  | 1,822 |  |  |  | - |  |  |  | 237,840 |
Total |  | $ | 1,607,528 |  |  | $ | 7,624,033 |  |  | $ | 681,222 |  |  | $ | 1,254,646 |  |  | $ | 1,709 |  |  | $ | 11,169,138 |
|  | December 31, 2024 |
|  | Commercial |  |  | Commercial real estate |  |  | Commercial construction |  |  | Residential real estate |  |  | Consumer |  |  | Total |
|  | (dollars in thousands) |
Allowance for credit losses – loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually analyzed |  | $ | 326 |  |  | $ | 909 |  |  | $ | - |  |  | $ | - |  |  | $ | - |  |  | $ | 1,235 |
Collectively evaluated |  |  | 17,740 |  |  |  | 53,868 |  |  |  | 5,064 |  |  |  | 4,561 |  |  |  | 5 |  |  |  | 81,238 |
Acquired with deteriorated credit quality |  |  | 212 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 212 |
Total |  | $ | 18,278 |  |  | $ | 54,777 |  |  | $ | 5,064 |  |  | $ | 4,561 |  |  | $ | 5 |  |  | $ | 82,685 |
Gross loans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Individually analyzed |  | $ | 15,751 |  |  | $ | 36,486 |  |  | $ | 2,204 |  |  | $ | 2,056 |  |  | $ | - |  |  | $ | 56,497 |
Collectively evaluated |  |  | 1,516,557 |  |  |  | 5,844,193 |  |  |  | 614,042 |  |  |  | 247,635 |  |  |  | 1,136 |  |  |  | 8,223,563 |
Acquired with deteriorated credit quality |  |  | 422 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 422 |
Total |  | $ | 1,532,730 |  |  | $ | 5,880,679 |  |  | $ | 616,246 |  |  | $ | 249,691 |  |  | $ | 1,136 |  |  | $ | 8,280,482 |
Financing Receivable, Allowance for Credit Loss [Table Text Block] |
|  | Three Months Ended June 30, 2025 |
|  | Commercial |  |  | Commercial real estate |  |  | Commercial construction |  |  | Residential real estate |  |  | Consumer |  |  | Total |
|  | (dollars in thousands) |
Balance as of March 31, 2025 |  | $ | 18,031 |  |  | $ | 54,586 |  |  | $ | 5,030 |  |  | $ | 4,752 |  |  | $ | 4 |  |  | $ | 82,403 |
Charge-offs |  |  | (3,011 | ) |  |  | (2,027 | ) |  |  | - |  |  |  | - |  |  |  | (1 | ) |  |  | (5,039 | )
Recoveries |  |  | 23 |  |  |  | 90 |  |  |  | - |  |  |  | 5 |  |  |  | - |  |  |  | 118 |
Provision for credit losses - loans: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Initial provision related to acquisition |  |  | 985 |  |  |  | 16,017 |  |  |  | 78 |  |  |  | 10,217 |  |  |  | 10 |  |  |  | 27,307 |
Operating provision for credit losses |  |  | 3,968 |  |  |  | 4,281 |  |  |  | 314 |  |  |  | (514 | ) |  |  | 16 |  |  |  | 8,065 |
Nonaccretable credit marks on PCD loans |  |  | 965 |  |  |  | 42,256 |  |  |  | - |  |  |  | 115 |  |  |  | - |  |  |  | 43,336 |
Balance as of June 30, 2025 |  | $ | 20,961 |  |  | $ | 115,203 |  |  | $ | 5,422 |  |  | $ | 14,575 |  |  | $ | 29 |  |  | $ | 156,190 |
|  | Six Months Ended June 30, 2025 |
|  | Commercial |  |  | Commercial real estate |  |  | Commercial construction |  |  | Residential real estate |  |  | Consumer |  |  | Total |
|  | (dollars in thousands) |
Balance as of December 31, 2024 |  | $ | 18,278 |  |  | $ | 54,777 |  |  | $ | 5,064 |  |  | $ | 4,561 |  |  | $ | 5 |  |  | $ | 82,685 |
Charge-offs |  |  | (3,011 | ) |  |  | (5,582 | ) |  |  | - |  |  |  | - |  |  |  | (1 | ) |  |  | (8,594 | )
Recoveries |  |  | 178 |  |  |  | 90 |  |  |  | - |  |  |  | 5 |  |  |  | - |  |  |  | 273 |
Provision for credit losses - loans: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Initial provision related to acquisition - loans |  |  | 985 |  |  |  | 16,017 |  |  |  | 78 |  |  |  | 10,217 |  |  |  | 10 |  |  |  | 27,307 |
Operating provision for credit losses |  |  | 3,566 |  |  |  | 7,645 |  |  |  | 280 |  |  |  | (323 | ) |  |  | 15 |  |  |  | 11,183 |
Nonaccretable credit marks on PCD loans |  |  | 965 |  |  |  | 42,256 |  |  |  | - |  |  |  | 115 |  |  |  | - |  |  |  | 43,336 |
Balance as of June 30, 2025 |  | $ | 20,961 |  |  | $ | 115,203 |  |  | $ | 5,422 |  |  | $ | 14,575 |  |  | $ | 29 |  |  | $ | 156,190 |
|  | Three Months Ended June 30, 2024 |
|  | Commercial |  |  | Commercial real estate |  |  | Commercial construction |  |  | Residential real estate |  |  | Consumer |  |  | Total |
|  | (dollars in thousands) |
Balance as of March 31, 2024 |  | $ | 20,735 |  |  | $ | 52,794 |  |  | $ | 5,011 |  |  | $ | 4,326 |  |  | $ | 3 |  |  | $ | 82,869 |
Charge-offs |  |  | - |  |  |  | (3,595 | ) |  |  | - |  |  |  | - |  |  |  | - |  |  |  | (3,595 | )
Recoveries |  |  | 324 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 324 |
(Reversal of) provision for credit losses – loans |  |  | (1,039 | ) |  |  | 3,899 |  |  |  | (539 | ) |  |  | 158 |  |  |  | - |  |  |  | 2,479 |
Balance as of June 30, 2024 |  | $ | 20,020 |  |  | $ | 53,098 |  |  | $ | 4,472 |  |  | $ | 4,484 |  |  | $ | 3 |  |  | $ | 82,077 |
|  | Six Months Ended June 30, 2024 |
|  | Commercial |  |  | Commercial real estate |  |  | Commercial construction |  |  | Residential real estate |  |  | Consumer |  |  | Total |
|  | (dollars in thousands) |
Balance as of December 31, 2023 |  | $ | 20,632 |  |  | $ | 52,278 |  |  | $ | 4,739 |  |  | $ | 4,320 |  |  | $ | 5 |  |  | $ | 81,974 |
Charge-offs |  |  | (300 | ) |  |  | (6,480 | ) |  |  | - |  |  |  | - |  |  |  | - |  |  |  | (6,780 | )
Recoveries |  |  | 347 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 347 |
(Reversal of) provision for credit losses – loans |  |  | (659 | ) |  |  | 7,300 |  |  |  | (267 | ) |  |  | 164 |  |  |  | (2 | ) |  |  | 6,536 |
Balance as of June 30, 2024 |  | $ | 20,020 |  |  | $ | 53,098 |  |  | $ | 4,472 |  |  | $ | 4,484 |  |  | $ | 3 |  |  | $ | 82,077 |
Financing Receivable, Modified [Table Text Block] |
|  | Amortized Cost Basis at Time of Modification |  |  |  |  |  |  |  |  |
|  | Term Extension |  |  | Payment Deferral |  |  | Total |  |  | Gross Loans at June 30, 2025 |  |  | Modification % (Modified Loans/ Gross Loans) |
June 30, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
(dollars in thousands) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial |  | $ | 6,491 |  |  | $ | 19,461 |  |  | $ | 25,952 |  |  | $ | 1,607,528 |  |  |  | 1.61 | %
Commercial real estate |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 7,624,033 |  |  |  | - |
Commercial construction |  |  | 8,419 |  |  |  | - |  |  |  | 8,419 |  |  |  | 681,222 |  |  |  | 1.24 |
Residential real estate |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 1,254,646 |  |  |  | - |
Consumer |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 1,709 |  |  |  | - |
Total |  | $ | 14,910 |  |  | $ | 19,461 |  |  | $ | 34,371 |  |  | $ | 11,169,138 |  |  |  | 0.31 | %
|  | Weighted Average Term Extension (Months) |  |  | Weighted Average Payment Deferral (Months) |
June 30, 2025 |  |  |  |  |  |  |  |
Commercial |  |  | 3 |  |  |  | 3 |
Commercial real estate |  |  | - |  |  |  | - |
Commercial construction |  |  | 6 |  |  |  | - |
Residential real estate |  |  | - |  |  |  | - |
Consumer |  |  | - |  |  |  | - |
Financing Receivable, Modified, Past Due [Table Text Block] |
|  | Current |  |  | 30-89 Days Past Due |  |  | 90 Days or Greater Past Due |
June 30, 2025 |  |  |  |  |  |  |  |  |  |  |  |
(dollars in thousands) |  |  |  |  |  |  |  |  |  |  |  |
Commercial |  | $ | 26,285 |  |  | $ | - |  |  | $ | - |
Commercial real estate |  |  | 63,804 |  |  |  | - |  |  |  | - |
Commercial construction |  |  | 8,419 |  |  |  | - |  |  |  | - |
Residential real estate |  |  | - |  |  |  | - |  |  |  | - |
Consumer |  |  | - |  |  |  | - |  |  |  | - |
Total |  | $ | 98,508 |  |  | $ | - |  |  | $ | - |
Schedule of Allowance for Credit Losses on Unfunded Commitments [Table Text Block] |
|  | Three Months Ended |  |  | Three Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2025 |  |  | 2024 |
|  | (dollars in thousands) |
Balance at beginning of period |  | $ | 3,009 |  |  | $ | 2,754 |
Provision for credit losses – unfunded commitments |  |  | 328 |  |  |  | 21 |
Balance at end of period |  | $ | 3,337 |  |  | $ | 2,775 |
|  | Six Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2025 |  |  | 2024 |
|  | (dollars in thousands) |
Balance at beginning of period |  | $ | 2,627 |  |  | $ | 2,811 |
Provision for (reversal of) allowance for credit losses – unfunded commitments |  |  | 710 |  |  |  | (36 | )
Balance at end of period |  | $ | 3,337 |  |  | $ | 2,775 |
Schedule of Provision for (Reversal of) Credit Losses [Table Text Block] |
|  | Three Months Ended |  |  | Three Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2025 |  |  | 2024 |
|  | (dollars in thousands) |
Provision for credit losses – loans |  | $ | 8,065 |  |  | $ | 2,479 |
Initial provision related to acquisition - loans |  |  | 27,307 |  |  |  | - |
Provision for credit losses - unfunded commitments |  |  | 328 |  |  |  | 21 |
Provision for credit losses |  | $ | 35,700 |  |  | $ | 2,500 |
|  | Six Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2025 |  |  | 2024 |
|  | (dollars in thousands) |
Provision for credit losses – loans |  | $ | 11,183 |  |  | $ | 6,536 |
Initial provision related to acquisition - loans |  |  | 27,307 |  |  |  | - |
Provision for (reversal of) credit losses - unfunded commitments |  |  | 710 |  |  |  | (36 | )
Provision for credit losses |  | $ | 39,200 |  |  | $ | 6,500 |

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Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration