Note 4 - Loans and Allowance for Credit Losses (Tables)
|
6 Months Ended |
Jun. 30, 2026 |
| Notes Tables |
|
| Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] |
| | | June 30, | | | December 31, | |
| (dollars in thousands) | | 2026 | | | 2025 | |
| Commercial | | | | | | | | |
| Commercial and business lending | | | | | | | | |
| Commercial and industrial | | $ | 759,959 | | | $ | 736,833 | |
| Commercial real estate − Owner occupied | | | 622,241 | | | | 427,260 | |
| Total commercial and business lending | | | 1,382,200 | | | | 1,164,093 | |
| Investor commercial real estate | | | | | | | | |
| Construction, land and development | | | 79,850 | | | | 246,238 | |
| Multifamily | | | 361,875 | | | | 383,505 | |
| Non-owner occupied | | | 893,367 | | | | 875,862 | |
| Total investor commercial real estate | | | 1,335,092 | | | | 1,505,605 | |
| Agricultural | | | | | | | | |
| Land | | | 54,202 | | | | 64,799 | |
| Production | | | 53,367 | | | | 62,500 | |
| Total agricultural | | | 107,569 | | | | 127,299 | |
| Total commercial | | | 2,824,861 | | | | 2,796,997 | |
| Consumer | | | | | | | | |
| Residential real estate | | | | | | | | |
| First lien | | | 828,936 | | | | 874,737 | |
| Construction | | | 31,202 | | | | 33,703 | |
| HELOC | | | 273,124 | | | | 260,883 | |
| Junior lien | | | 31,941 | | | | 36,844 | |
| Total residential real estate | | | 1,165,203 | | | | 1,206,167 | |
| Other consumer | | | 44,180 | | | | 44,858 | |
| Total consumer | | | 1,209,383 | | | | 1,251,025 | |
| Total loans | | $ | 4,034,244 | | | $ | 4,048,022 | |
|
| Financing Receivable, Allowance for Credit Loss [Table Text Block] |
| | | Three months ended June 30, 2026 | |
| Beginning | | Provision for (Recovery | | | Loan | | | Loan | | | Ending | | | | |
| (dollars in thousands) | | Balance | | | of) Credit Losses(1) | | | Charge-offs | | | Recoveries | | | Balance | |
| Commercial | | | | | | | | | | | | | | | | | | | | |
| Commercial and business lending | | | | | | | | | | | | | | | | | | | | |
| Commercial and industrial | | $ | 11,628 | | | $ | 162 | | | $ | (2,188 | ) | | $ | 875 | | | $ | 10,477 | |
| Commercial real estate − Owner occupied | | | 3,604 | | | | 2,272 | | | | — | | | | 11 | | | | 5,887 | |
| Total commercial and business lending | | | 15,232 | | | | 2,434 | | | | (2,188 | ) | | | 886 | | | | 16,364 | |
| Investor commercial real estate | | | | | | | | | | | | | | | | | | | | |
| Construction, land and development | | | 6,741 | | | | (3,763 | ) | | | — | | | | — | | | | 2,978 | |
| Multifamily | | | 3,699 | | | | 720 | | | | (500 | ) | | | — | | | | 3,919 | |
| Non-owner occupied | | | 10,929 | | | | (349 | ) | | | — | | | | — | | | | 10,580 | |
| Total investor commercial real estate | | | 21,369 | | | | (3,392 | ) | | | (500 | ) | | | — | | | | 17,477 | |
| Agricultural | | | | | | | | | | | | | | | | | | | | |
| Land | | | 852 | | | | 31 | | | | — | | | | — | | | | 883 | |
| Production | | | 518 | | | | 100 | | | | (50 | ) | | | — | | | | 568 | |
| Total agricultural | | | 1,370 | | | | 131 | | | | (50 | ) | | | — | | | | 1,451 | |
| Total commercial | | | 37,971 | | | | (827 | ) | | | (2,738 | ) | | | 886 | | | | 35,292 | |
| Consumer | | | | | | | | | | | | | | | | | | | | |
| Residential real estate | | | | | | | | | | | | | | | | | | | | |
| First lien | | | 9,122 | | | | 244 | | | | — | | | | — | | | | 9,366 | |
| Construction | | | 297 | | | | 69 | | | | — | | | | — | | | | 366 | |
| HELOC | | | 2,130 | | | | 202 | | | | — | | | | — | | | | 2,332 | |
| Junior lien | | | 407 | | | | 708 | | | | (719 | ) | | | 1 | | | | 397 | |
| Total residential real estate | | | 11,956 | | | | 1,223 | | | | (719 | ) | | | 1 | | | | 12,461 | |
| Other consumer | | | 578 | | | | 35 | | | | (33 | ) | | | 28 | | | | 608 | |
| Total consumer | | | 12,534 | | | | 1,258 | | | | (752 | ) | | | 29 | | | | 13,069 | |
| Total | | $ | 50,505 | | | $ | 431 | | | $ | (3,490 | ) | | $ | 915 | | | $ | 48,361 | |
| | | Six months ended June 30, 2026 | |
| | | Beginning | | | Provision for (Recovery | | | Loan | | | Loan | | | Ending | |
| (dollars in thousands) | | Balance | | | of) Credit Losses(1) | | | Charge-offs | | | Recoveries | | | Balance | |
| Commercial | | | | | | | | | | | | | | | | | | | | |
| Commercial and business lending | | | | | | | | | | | | | | | | | | | | |
| Commercial and industrial | | $ | 16,216 | | | $ | 1,954 | | | $ | (8,753 | ) | | $ | 1,060 | | | $ | 10,477 | |
| Commercial real estate − Owner occupied | | | 3,097 | | | | 2,768 | | | | — | | | | 22 | | | | 5,887 | |
| Total commercial and business lending | | | 19,313 | | | | 4,722 | | | | (8,753 | ) | | | 1,082 | | | | 16,364 | |
| Investor commercial real estate | | | | | | | | | | | | | | | | | | | | |
| Construction, land and development | | | 13,210 | | | | (10,232 | ) | | | — | | | | — | | | | 2,978 | |
| Multifamily | | | 4,380 | | | | 595 | | | | (1,056 | ) | | | — | | | | 3,919 | |
| Non-owner occupied | | | 11,006 | | | | (426 | ) | | | — | | | | — | | | | 10,580 | |
| Total investor commercial real estate | | | 28,596 | | | | (10,063 | ) | | | (1,056 | ) | | | — | | | | 17,477 | |
| Agricultural | | | | | | | | | | | | | | | | | | | | |
| Land | | | 959 | | | | (76 | ) | | | — | | | | — | | | | 883 | |
| Production | | | 623 | | | | (199 | ) | | | (50 | ) | | | 194 | | | | 568 | |
| Total agricultural | | | 1,582 | | | | (275 | ) | | | (50 | ) | | | 194 | | | | 1,451 | |
| Total commercial | | | 49,491 | | | | (5,616 | ) | | | (9,859 | ) | | | 1,276 | | | | 35,292 | |
| Consumer | | | | | | | | | | | | | | | | | | | | |
| Residential real estate | | | | | | | | | | | | | | | | | | | | |
| First lien | | | 9,358 | | | | 8 | | | | — | | | | — | | | | 9,366 | |
| Construction | | | 274 | | | | 92 | | | | — | | | | — | | | | 366 | |
| HELOC | | | 1,787 | | | | 545 | | | | — | | | | — | | | | 2,332 | |
| Junior lien | | | 395 | | | | 932 | | | | (931 | ) | | | 1 | | | | 397 | |
| Total residential real estate | | | 11,814 | | | | 1,577 | | | | (931 | ) | | | 1 | | | | 12,461 | |
| Other consumer | | | 610 | | | | 85 | | | | (146 | ) | | | 59 | | | | 608 | |
| Total consumer | | | 12,424 | | | | 1,662 | | | | (1,077 | ) | | | 60 | | | | 13,069 | |
| Total | | $ | 61,915 | | | $ | (3,954 | ) | | $ | (10,936 | ) | | $ | 1,336 | | | $ | 48,361 | |
| | | Three months ended June 30, 2025 | |
| | | Beginning | | | Provision for (Recovery | | | Loan | | | Loan | | | Ending | |
| (dollars in thousands) | | Balance | | | of) Credit Losses(1) | | | Charge-offs | | | Recoveries | | | Balance | |
| Commercial | | | | | | | | | | | | | | | | | | | | |
| Commercial and business lending | | | | | | | | | | | | | | | | | | | | |
| Commercial and industrial | | $ | 7,960 | | | $ | 317 | | | $ | (79 | ) | | $ | 128 | | | $ | 8,326 | |
| Commercial real estate − Owner occupied | | | 3,512 | | | | 301 | | | | (6 | ) | | | 11 | | | | 3,818 | |
| Total commercial and business lending | | | 11,472 | | | | 618 | | | | (85 | ) | | | 139 | | | | 12,144 | |
| Investor commercial real estate | | | | | | | | | | | | | | | | | | | | |
| Construction, land and development | | | 18,369 | | | | 160 | | | | — | | | | — | | | | 18,529 | |
| Multifamily | | | 4,749 | | | | 127 | | | | — | | | | — | | | | 4,876 | |
| Non-owner occupied | | | 16,342 | | | | (22 | ) | | | (3,401 | ) | | | — | | | | 12,919 | |
| Total investor commercial real estate | | | 39,460 | | | | 265 | | | | (3,401 | ) | | | — | | | | 36,324 | |
| Agricultural | | | | | | | | | | | | | | | | | | | | |
| Land | | | 603 | | | | 12 | | | | — | | | | — | | | | 615 | |
| Production | | | 913 | | | | 94 | | | | (384 | ) | | | — | | | | 623 | |
| Total agricultural | | | 1,516 | | | | 106 | | | | (384 | ) | | | — | | | | 1,238 | |
| Total commercial | | | 52,448 | | | | 989 | | | | (3,870 | ) | | | 139 | | | | 49,706 | |
| Consumer | | | | | | | | | | | | | | | | | | | | |
| Residential real estate | | | | | | | | | | | | | | | | | | | | |
| First lien | | | 7,042 | | | | 17 | | | | — | | | | — | | | | 7,059 | |
| Construction | | | 467 | | | | (51 | ) | | | — | | | | — | | | | 416 | |
| HELOC | | | 1,180 | | | | 188 | | | | (10 | ) | | | — | | | | 1,358 | |
| Junior lien | | | 439 | | | | (63 | ) | | | — | | | | — | | | | 376 | |
| Total residential real estate | | | 9,128 | | | | 91 | | | | (10 | ) | | | — | | | | 9,209 | |
| Other consumer | | | 353 | | | | 36 | | | | (38 | ) | | | 12 | | | | 363 | |
| Total consumer | | | 9,481 | | | | 127 | | | | (48 | ) | | | 12 | | | | 9,572 | |
| Total | | $ | 61,929 | | | $ | 1,116 | | | $ | (3,918 | ) | | $ | 151 | | | $ | 59,278 | |
| | | Six months ended June 30, 2025 | |
| | | Beginning | | | Provision for (Recovery | | | Loan | | | Loan | | | Ending | |
| (dollars in thousands) | | Balance | | | of) Credit Losses(1) | | | Charge-offs | | | Recoveries | | | Balance | |
| Commercial | | | | | | | | | | | | | | | | | | | | |
| Commercial and business lending | | | | | | | | | | | | | | | | | | | | |
| Commercial and industrial | | $ | 8,170 | | | $ | 6 | | | $ | (248 | ) | | $ | 398 | | | $ | 8,326 | |
| Commercial real estate − Owner occupied | | | 3,226 | | | | 576 | | | | (6 | ) | | | 22 | | | | 3,818 | |
| Total commercial and business lending | | | 11,396 | | | | 582 | | | | (254 | ) | | | 420 | | | | 12,144 | |
| Investor commercial real estate | | | | | | | | | | | | | | | | | | | | |
| Construction, land and development | | | 16,277 | | | | 2,252 | | | | — | | | | — | | | | 18,529 | |
| Multifamily | | | 4,716 | | | | 160 | | | | — | | | | — | | | | 4,876 | |
| Non-owner occupied | | | 16,513 | | | | (193 | ) | | | (3,401 | ) | | | — | | | | 12,919 | |
| Total investor commercial real estate | | | 37,506 | | | | 2,219 | | | | (3,401 | ) | | | — | | | | 36,324 | |
| Agricultural | | | | | | | | | | | | | | | | | | | | |
| Land | | | 597 | | | | 18 | | | | — | | | | — | | | | 615 | |
| Production | | | 631 | | | | 364 | | | | (384 | ) | | | 12 | | | | 623 | |
| Total agricultural | | | 1,228 | | | | 382 | | | | (384 | ) | | | 12 | | | | 1,238 | |
| Total commercial | | | 50,130 | | | | 3,183 | | | | (4,039 | ) | | | 432 | | | | 49,706 | |
| Consumer | | | | | | | | | | | | | | | | | | | | |
| Residential real estate | | | | | | | | | | | | | | | | | | | | |
| First lien | | | 6,921 | | | | 192 | | | | (54 | ) | | | — | | | | 7,059 | |
| Construction | | | 357 | | | | 59 | | | | — | | | | — | | | | 416 | |
| HELOC | | | 1,339 | | | | 279 | | | | (260 | ) | | | — | | | | 1,358 | |
| Junior lien | | | 742 | | | | (66 | ) | | | (300 | ) | | | — | | | | 376 | |
| Total residential real estate | | | 9,359 | | | | 464 | | | | (614 | ) | | | — | | | | 9,209 | |
| Other consumer | | | 440 | | | | (124 | ) | | | (77 | ) | | | 124 | | | | 363 | |
| Total consumer | | | 9,799 | | | | 340 | | | | (691 | ) | | | 124 | | | | 9,572 | |
| Total | | $ | 59,929 | | | $ | 3,523 | | | $ | (4,730 | ) | | $ | 556 | | | $ | 59,278 | |
|
| Financing Receivable Credit Quality Indicators [Table Text Block] |
| | | | | | | | | | | | | | | | | | | | | | | | | | | Revolving | | | | | |
| (dollars in thousands) | | Term Loans Amortized Cost Basis by Origination Year | | | Loans Amortized | | | | | |
| As of June 30, 2026 | | 2026 YTD | | | 2025 | | | 2024 | | | 2023 | | | 2022 | | | Prior | | | Cost Basis | | | Total | |
| Commercial and industrial | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Pass | | $ | 136,672 | | | $ | 214,306 | | | $ | 91,015 | | | $ | 54,282 | | | $ | 32,209 | | | $ | 57,764 | | | $ | 150,141 | | | $ | 736,389 | |
| Special mention | | | — | | | | 2,350 | | | | 8 | | | | 19 | | | | 150 | | | | 88 | | | | — | | | | 2,615 | |
| Substandard | | | — | | | | 361 | | | | 685 | | | | 13,435 | | | | 809 | | | | 2,228 | | | | 1,813 | | | | 19,331 | |
| Doubtful | | | — | | | | — | | | | 1,468 | | | | 156 | | | | — | | | | — | | | | — | | | | 1,624 | |
| Subtotal | | $ | 136,672 | | | $ | 217,017 | | | $ | 93,176 | | | $ | 67,892 | | | $ | 33,168 | | | $ | 60,080 | | | $ | 151,954 | | | $ | 759,959 | |
| Gross charge-offs | | $ | — | | | $ | 341 | | | $ | 1,544 | | | $ | 255 | | | $ | — | | | $ | 48 | | | $ | — | | | $ | 2,188 | |
| CRE − Owner occupied | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Pass | | $ | 88,390 | | | $ | 49,713 | | | $ | 137,780 | | | $ | 107,700 | | | $ | 67,322 | | | $ | 153,589 | | | $ | 2,646 | | | $ | 607,140 | |
| Special mention | | | — | | | | 1,268 | | | | 448 | | | | — | | | | — | | | | 1,517 | | | | — | | | | 3,233 | |
| Substandard | | | — | | | | — | | | | — | | | | 1,397 | | | | 3,696 | | | | 6,775 | | | | — | | | | 11,868 | |
| Doubtful | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | |
| Subtotal | | $ | 88,390 | | | $ | 50,981 | | | $ | 138,228 | | | $ | 109,097 | | | $ | 71,018 | | | $ | 161,881 | | | $ | 2,646 | | | $ | 622,241 | |
| Gross charge-offs | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | |
| CRE − Construction, land and development | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Pass | | $ | 5,152 | | | $ | 28,109 | | | $ | 32,577 | | | $ | 2,730 | | | $ | 1,201 | | | $ | 930 | | | $ | 9,151 | | | $ | 79,850 | |
| Special mention | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | |
| Substandard | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | |
| Doubtful | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | |
| Subtotal | | $ | 5,152 | | | $ | 28,109 | | | $ | 32,577 | | | $ | 2,730 | | | $ | 1,201 | | | $ | 930 | | | $ | 9,151 | | | $ | 79,850 | |
| Gross charge-offs | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | |
| CRE − Multifamily | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Pass | | $ | 7,299 | | | $ | 6,278 | | | $ | 48,690 | | | $ | 97,640 | | | $ | 105,291 | | | $ | 77,617 | | | $ | — | | | $ | 342,815 | |
| Special mention | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | |
| Substandard | | | — | | | | — | | | | 5,855 | | | | — | | | | — | | | | 13,205 | | | | — | | | | 19,060 | |
| Doubtful | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | |
| Subtotal | | $ | 7,299 | | | $ | 6,278 | | | $ | 54,545 | | | $ | 97,640 | | | $ | 105,291 | | | $ | 90,822 | | | $ | — | | | $ | 361,875 | |
| Gross charge-offs | | $ | — | | | $ | — | | | $ | — | | | $ | 500 | | | $ | — | | | $ | — | | | $ | — | | | $ | 500 | |
| CRE − Non-owner occupied | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Pass | | $ | 63,652 | | | $ | 103,969 | | | $ | 240,271 | | | $ | 101,347 | | | $ | 157,824 | | | $ | 214,401 | | | $ | 773 | | | $ | 882,237 | |
| Special mention | | | — | | | | — | | | | — | | | | — | | | | — | | | | 1,015 | | | | — | | | | 1,015 | |
| Substandard | | | — | | | | — | | | | 300 | | | | 4,477 | | | | — | | | | 5,338 | | | | — | | | | 10,115 | |
| Doubtful | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | |
| Subtotal | | $ | 63,652 | | | $ | 103,969 | | | $ | 240,571 | | | $ | 105,824 | | | $ | 157,824 | | | $ | 220,754 | | | $ | 773 | | | $ | 893,367 | |
| Gross charge-offs | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | |
| Agricultural − Land | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Pass | | $ | 209 | | | $ | 2,905 | | | $ | 7,670 | | | $ | 6,442 | | | $ | 15,203 | | | $ | 15,146 | | | $ | — | | | $ | 47,575 | |
| Special mention | | | 5,026 | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | 5,026 | |
| Substandard | | | 720 | | | | 229 | | | | — | | | | — | | | | 448 | | | | 204 | | | | — | | | | 1,601 | |
| Doubtful | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | |
| Subtotal | | $ | 5,955 | | | $ | 3,134 | | | $ | 7,670 | | | $ | 6,442 | | | $ | 15,651 | | | $ | 15,350 | | | $ | — | | | $ | 54,202 | |
| Gross charge-offs | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | |
| Agricultural − Production | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Pass | | $ | 5,995 | | | $ | 2,313 | | | $ | 4,376 | | | $ | 3,453 | | | $ | 2,496 | | | $ | 585 | | | $ | 29,381 | | | $ | 48,599 | |
| Special mention | | | — | | | | 447 | | | | 136 | | | | 648 | | | | — | | | | — | | | | 2,826 | | | | 4,057 | |
| Substandard | | | — | | | | 29 | | | | — | | | | — | | | | — | | | | — | | | | 682 | | | | 711 | |
| Doubtful | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | |
| Subtotal | | $ | 5,995 | | | $ | 2,789 | | | $ | 4,512 | | | $ | 4,101 | | | $ | 2,496 | | | $ | 585 | | | $ | 32,889 | | | $ | 53,367 | |
| Gross charge-offs | | $ | — | | | $ | — | | | $ | — | | | $ | 50 | | | $ | — | | | $ | — | | | $ | — | | | $ | 50 | |
| Residential real estate − First lien | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Performing | | $ | 21,757 | | | $ | 51,267 | | | $ | 34,377 | | | $ | 106,512 | | | $ | 191,512 | | | $ | 421,174 | | | $ | — | | | $ | 826,599 | |
| Nonperforming | | | — | | | | — | | | | 401 | | | | — | | | | — | | | | 1,936 | | | | — | | | | 2,337 | |
| Subtotal | | $ | 21,757 | | | $ | 51,267 | | | $ | 34,778 | | | $ | 106,512 | | | $ | 191,512 | | | $ | 423,110 | | | $ | — | | | $ | 828,936 | |
| Gross charge-offs | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | |
| Residential real estate − Construction | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Performing | | $ | 5,855 | | | $ | 19,541 | | | $ | 5,806 | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | 31,202 | |
| Nonperforming | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | |
| Subtotal | | $ | 5,855 | | | $ | 19,541 | | | $ | 5,806 | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | 31,202 | |
| Gross charge-offs | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | |
| Residential real estate − HELOC | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Performing | | $ | 323 | | | $ | 723 | | | $ | 2,049 | | | $ | 3,973 | | | $ | 4,248 | | | $ | 7,216 | | | $ | 254,004 | | | $ | 272,536 | |
| Nonperforming | | | — | | | | — | | | | — | | | | 25 | | | | 236 | | | | 327 | | | | — | | | | 588 | |
| Subtotal | | $ | 323 | | | $ | 723 | | | $ | 2,049 | | | $ | 3,998 | | | $ | 4,484 | | | $ | 7,543 | | | $ | 254,004 | | | $ | 273,124 | |
| Gross charge-offs | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | |
| Residential real estate − Junior lien | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Performing | | $ | 2,358 | | | $ | 4,176 | | | $ | 3,904 | | | $ | 6,928 | | | $ | 6,049 | | | $ | 8,130 | | | $ | 324 | | | $ | 31,869 | |
| Nonperforming | | | — | | | | — | | | | — | | | | — | | | | — | | | | 72 | | | | — | | | | 72 | |
| Subtotal | | $ | 2,358 | | | $ | 4,176 | | | $ | 3,904 | | | $ | 6,928 | | | $ | 6,049 | | | $ | 8,202 | | | $ | 324 | | | $ | 31,941 | |
| Gross charge-offs for the year ended | | $ | — | | | $ | — | | | $ | 565 | | | $ | — | | | $ | — | | | $ | 154 | | | $ | — | | | $ | 719 | |
| Other consumer | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Performing | | $ | 1,530 | | | $ | 4,848 | | | $ | 1,726 | | | $ | 1,884 | | | $ | 2,384 | | | $ | 2,851 | | | $ | 28,683 | | | $ | 43,906 | |
| Nonperforming | | | — | | | | — | | | | 274 | | | | — | | | | — | | | | — | | | | — | | | | 274 | |
| Subtotal | | $ | 1,530 | | | $ | 4,848 | | | $ | 2,000 | | | $ | 1,884 | | | $ | 2,384 | | | $ | 2,851 | | | $ | 28,683 | | | $ | 44,180 | |
| Gross charge-offs | | $ | — | | | $ | 5 | | | $ | — | | | $ | 4 | | | $ | — | | | $ | 24 | | | $ | — | | | $ | 33 | |
| Total loans | | $ | 344,938 | | | $ | 492,832 | | | $ | 619,816 | | | $ | 513,048 | | | $ | 591,078 | | | $ | 992,108 | | | $ | 480,424 | | | $ | 4,034,244 | |
| Gross charge-offs | | $ | — | | | $ | 346 | | | $ | 2,109 | | | $ | 809 | | | $ | — | | | $ | 226 | | | $ | — | | | $ | 3,490 | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | Revolving | | | | | |
| (dollars in thousands) | | Term Loans Amortized Cost Basis by Origination Year | | | Loans Amortized | | | | | |
| As of December 31, 2025 | | 2025 | | | 2024 | | | 2023 | | | 2022 | | | 2021 | | | Prior | | | Cost Basis | | | Total | |
| Commercial and industrial | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Pass | | $ | 242,893 | | | $ | 131,308 | | | $ | 67,934 | | | $ | 43,513 | | | $ | 21,143 | | | $ | 51,586 | | | $ | 145,133 | | | $ | 703,510 | |
| Special mention | | | 316 | | | | 10 | | | | 560 | | | | — | | | | — | | | | 28 | | | | — | | | | 914 | |
| Substandard | | | 35 | | | | 26 | | | | 2,701 | | | | 2,970 | | | | 1,072 | | | | 6,459 | | | | 7,115 | | | | 20,378 | |
| Doubtful | | | 1,218 | | | | 8,638 | | | | 1,763 | | | | 298 | | | | 114 | | | | — | | | | — | | | | 12,031 | |
| Subtotal | | $ | 244,462 | | | $ | 139,982 | | | $ | 72,958 | | | $ | 46,781 | | | $ | 22,329 | | | $ | 58,073 | | | $ | 152,248 | | | $ | 736,833 | |
| Gross charge-offs | | $ | — | | | $ | 407 | | | $ | 152 | | | $ | 10 | | | $ | 5 | | | $ | 342 | | | $ | — | | | $ | 916 | |
| CRE − Owner occupied | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Pass | | $ | 42,468 | | | $ | 86,030 | | | $ | 55,069 | | | $ | 61,790 | | | $ | 39,654 | | | $ | 126,951 | | | $ | 1,240 | | | $ | 413,202 | |
| Special mention | | | — | | | | 449 | | | | — | | | | — | | | | — | | | | 1,465 | | | | 769 | | | | 2,683 | |
| Substandard | | | — | | | | — | | | | 1,402 | | | | 2,867 | | | | 2,342 | | | | 4,764 | | | | — | | | | 11,375 | |
| Doubtful | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | |
| Subtotal | | $ | 42,468 | | | $ | 86,479 | | | $ | 56,471 | | | $ | 64,657 | | | $ | 41,996 | | | $ | 133,180 | | | $ | 2,009 | | | $ | 427,260 | |
| Gross charge-offs | | $ | — | | | $ | — | | | $ | 6 | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | 6 | |
| CRE − Construction, land and development | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Pass | | $ | 26,108 | | | $ | 148,261 | | | $ | 18,056 | | | $ | 9,738 | | | $ | 650 | | | $ | 995 | | | $ | 8,229 | | | $ | 212,037 | |
| Special mention | | | — | | | | — | | | | — | | | | 178 | | | | — | | | | — | | | | — | | | | 178 | |
| Substandard | | | — | | | | 11,178 | | | | — | | | | 22,685 | | | | — | | | | 160 | | | | — | | | | 34,023 | |
| Doubtful | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | |
| Subtotal | | $ | 26,108 | | | $ | 159,439 | | | $ | 18,056 | | | $ | 32,601 | | | $ | 650 | | | $ | 1,155 | | | $ | 8,229 | | | $ | 246,238 | |
| Gross charge-offs | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | |
| CRE − Multifamily | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Pass | | $ | 6,338 | | | $ | 26,236 | | | $ | 115,983 | | | $ | 115,403 | | | $ | 30,191 | | | $ | 60,813 | | | $ | — | | | $ | 354,964 | |
| Special mention | | | — | | | | — | | | | — | | | | — | | | | 831 | | | | — | | | | — | | | | 831 | |
| Substandard | | | — | | | | 5,751 | | | | 3,972 | | | | — | | | | — | | | | 17,987 | | | | — | | | | 27,710 | |
| Doubtful | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | |
| Subtotal | | $ | 6,338 | | | $ | 31,987 | | | $ | 119,955 | | | $ | 115,403 | | | $ | 31,022 | | | $ | 78,800 | | | $ | — | | | $ | 383,505 | |
| Gross charge-offs | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | |
| CRE − Non-owner occupied | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Pass | | $ | 102,426 | | | $ | 196,932 | | | $ | 134,443 | | | $ | 169,100 | | | $ | 86,273 | | | $ | 168,082 | | | $ | 1,015 | | | $ | 858,271 | |
| Special mention | | | — | | | | — | | | | — | | | | — | | | | — | | | | 1,040 | | | | — | | | | 1,040 | |
| Substandard | | | — | | | | — | | | | 5,344 | | | | 7,489 | | | | 2,729 | | | | 989 | | | | — | | | | 16,551 | |
| Doubtful | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | |
| Subtotal | | $ | 102,426 | | | $ | 196,932 | | | $ | 139,787 | | | $ | 176,589 | | | $ | 89,002 | | | $ | 170,111 | | | $ | 1,015 | | | $ | 875,862 | |
| Gross charge-offs | | $ | — | | | $ | — | | | $ | — | | | $ | 632 | | | $ | 775 | | | $ | 1,994 | | | $ | — | | | $ | 3,401 | |
| Agricultural − Land | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Pass | | $ | 8,201 | | | $ | 8,285 | | | $ | 8,410 | | | $ | 12,363 | | | $ | 5,202 | | | $ | 12,221 | | | $ | 2,464 | | | $ | 57,146 | |
| Special mention | | | 233 | | | | — | | | | — | | | | 3,315 | | | | — | | | | — | | | | — | | | | 3,548 | |
| Substandard | | | — | | | | — | | | | 303 | | | | 3,583 | | | | — | | | | 219 | | | | — | | | | 4,105 | |
| Doubtful | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | |
| Subtotal | | $ | 8,434 | | | $ | 8,285 | | | $ | 8,713 | | | $ | 19,261 | | | $ | 5,202 | | | $ | 12,440 | | | $ | 2,464 | | | $ | 64,799 | |
| Gross charge-offs | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | |
| Agricultural − Production | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Pass | | $ | 4,778 | | | $ | 6,219 | | | $ | 4,652 | | | $ | 3,154 | | | $ | 370 | | | $ | 720 | | | $ | 38,945 | | | $ | 58,838 | |
| Special mention | | | — | | | | 48 | | | | 112 | | | | — | | | | — | | | | — | | | | 213 | | | | 373 | |
| Substandard | | | — | | | | 21 | | | | 553 | | | | 1,237 | | | | 29 | | | | 342 | | | | 1,107 | | | | 3,289 | |
| Doubtful | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | | | | — | |
| Subtotal | | $ | 4,778 | | | $ | 6,288 | | | $ | 5,317 | | | $ | 4,391 | | | $ | 399 | | | $ | 1,062 | | | $ | 40,265 | | | $ | 62,500 | |
| Gross charge-offs | | $ | — | | | $ | — | | | $ | — | | | $ | 384 | | | $ | — | | | $ | — | | | $ | — | | | $ | 384 | |
| Residential real estate − First lien | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Performing | | $ | 53,688 | | | $ | 37,893 | | | $ | 122,651 | | | $ | 210,228 | | | $ | 234,461 | | | $ | 213,214 | | | $ | — | | | $ | 872,135 | |
| Nonperforming | | | — | | | | — | | | | 499 | | | | — | | | | 642 | | | | 1,461 | | | | — | | | | 2,602 | |
| Subtotal | | $ | 53,688 | | | $ | 37,893 | | | $ | 123,150 | | | $ | 210,228 | | | $ | 235,103 | | | $ | 214,675 | | | $ | — | | | $ | 874,737 | |
| Gross charge-offs | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | 7 | | | $ | 48 | | | $ | — | | | $ | 55 | |
| Residential real estate − Construction | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Performing | | $ | 18,097 | | | $ | 10,459 | | | $ | — | | | $ | — | | | $ | 467 | | | $ | — | | | $ | — | | | $ | 29,023 | |
| Nonperforming | | | — | | | | — | | | | — | | | | 4,680 | | | | — | | | | — | | | | — | | | | 4,680 | |
| Subtotal | | $ | 18,097 | | | $ | 10,459 | | | $ | — | | | $ | 4,680 | | | $ | 467 | | | $ | — | | | $ | — | | | $ | 33,703 | |
| Gross charge-offs | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | | | $ | — | |
| Residential real estate − HELOC | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Performing | | $ | 757 | | | $ | 2,121 | | | $ | 3,716 | | | $ | 5,252 | | | $ | 975 | | | $ | 5,649 | | | $ | 242,285 | | | $ | 260,755 | |
| Nonperforming | | | — | | | | — | | | | 25 | | | | 50 | | | | — | | | | 53 | | | | — | | | | 128 | |
| Subtotal | | $ | 757 | | | $ | 2,121 | | | $ | 3,741 | | | $ | 5,302 | | | $ | 975 | | | $ | 5,702 | | | $ | 242,285 | | | $ | 260,883 | |
| Gross charge-offs | | $ | — | | | $ | 100 | | | $ | 10 | | | $ | 438 | | | $ | — | | | $ | — | | | $ | — | | | $ | 548 | |
| Residential real estate − Junior lien | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Performing | | $ | 4,753 | | | $ | 4,995 | | | $ | 8,609 | | | $ | 7,090 | | | $ | 3,977 | | | $ | 4,995 | | | $ | 50 | | | $ | 34,469 | |
| Nonperforming | | | — | | | | 1,775 | | | | — | | | | — | | | | — | | | | 600 | | | | — | | | | 2,375 | |
| Subtotal | | $ | 4,753 | | | $ | 6,770 | | | $ | 8,609 | | | $ | 7,090 | | | $ | 3,977 | | | $ | 5,595 | | | $ | 50 | | | $ | 36,844 | |
| Gross charge-offs | | $ | — | | | $ | — | | | $ | — | | | $ | 300 | | | $ | — | | | $ | — | | | $ | — | | | $ | 300 | |
| Other consumer | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Performing | | $ | 5,330 | | | $ | 2,318 | | | $ | 3,016 | | | $ | 3,056 | | | $ | 157 | | | $ | 3,651 | | | $ | 26,982 | | | $ | 44,510 | |
| Nonperforming | | | — | | | | 319 | | | | — | | | | — | | | | — | | | | 29 | | | | — | | | | 348 | |
| Subtotal | | $ | 5,330 | | | $ | 2,637 | | | $ | 3,016 | | | $ | 3,056 | | | $ | 157 | | | $ | 3,680 | | | $ | 26,982 | | | $ | 44,858 | |
| Gross charge-offs | | $ | — | | | $ | 16 | | | $ | 31 | | | $ | 22 | | | $ | — | | | $ | 69 | | | $ | — | | | $ | 138 | |
| Total loans | | $ | 517,639 | | | $ | 689,272 | | | $ | 559,773 | | | $ | 690,039 | | | $ | 431,279 | | | $ | 684,473 | | | $ | 475,547 | | | $ | 4,048,022 | |
| Gross charge-offs | | $ | — | | | $ | 523 | | | $ | 199 | | | $ | 1,786 | | | $ | 787 | | | $ | 2,453 | | | $ | — | | | $ | 5,748 | |
|
| Financing Receivable, Past Due [Table Text Block] |
| | | June 30, 2026 | |
| | | | | | | | | | | | | | | 90 Days | | | | | | | | | |
| | | Accruing | | | 30 - 59 Days | | | 60 - 89 Days | | | or More | | | | | | | Total | |
| (dollars in thousands) | | Current | | | Past Due | | | Past Due | | | Past Due | | | Nonaccrual | | | Loans | |
| Commercial | | | | | | | | | | | | | | | | | | | | | | | | |
| Commercial and business lending | | | | | | | | | | | | | | | | | | | | | | | | |
| Commercial and industrial | | $ | 755,441 | | | $ | 1,505 | | | $ | 51 | | | $ | — | | | $ | 2,962 | | | $ | 759,959 | |
| Commercial real estate − Owner occupied | | | 622,105 | | | | — | | | | — | | | | — | | | | 136 | | | | 622,241 | |
| Total commercial and business lending | | | 1,377,546 | | | | 1,505 | | | | 51 | | | | — | | | | 3,098 | | | | 1,382,200 | |
| Investor commercial real estate | | | | | | | | | | | | | | | | | | | | | | | | |
| Construction, land and development | | | 79,850 | | | | — | | | | — | | | | — | | | | — | | | | 79,850 | |
| Multifamily | | | 357,425 | | | | 3,578 | | | | — | | | | — | | | | 872 | | | | 361,875 | |
| Non-owner occupied | | | 893,216 | | | | — | | | | — | | | | — | | | | 151 | | | | 893,367 | |
| Total investor commercial real estate | | | 1,330,491 | | | | 3,578 | | | | — | | | | — | | | | 1,023 | | | | 1,335,092 | |
| Agricultural | | | | | | | | | | | | | | | | | | | | | | | | |
| Land | | | 53,824 | | | | 229 | | | | — | | | | — | | | | 149 | | | | 54,202 | |
| Production | | | 53,107 | | | | 65 | | | | 195 | | | | — | | | | — | | | | 53,367 | |
| Total agricultural | | | 106,931 | | | | 294 | | | | 195 | | | | — | | | | 149 | | | | 107,569 | |
| Total commercial | | | 2,814,968 | | | | 5,377 | | | | 246 | | | | — | | | | 4,270 | | | | 2,824,861 | |
| Consumer | | | | | | | | | | | | | | | | | | | | | | | | |
| Residential real estate | | | | | | | | | | | | | | | | | | | | | | | | |
| First lien | | | 826,107 | | | | 298 | | | | 194 | | | | 436 | | | | 1,901 | | | | 828,936 | |
| Construction | | | 31,202 | | | | — | | | | — | | | | — | | | | — | | | | 31,202 | |
| HELOC | | | 272,088 | | | | 440 | | | | 8 | | | | — | | | | 588 | | | | 273,124 | |
| Junior lien | | | 31,778 | | | | 78 | | | | 13 | | | | — | | | | 72 | | | | 31,941 | |
| Total residential real estate | | | 1,161,175 | | | | 816 | | | | 215 | | | | 436 | | | | 2,561 | | | | 1,165,203 | |
| Other consumer | | | 43,789 | | | | 107 | | | | 10 | | | | — | | | | 274 | | | | 44,180 | |
| Total consumer | | | 1,204,964 | | | | 923 | | | | 225 | | | | 436 | | | | 2,835 | | | | 1,209,383 | |
| Total | | $ | 4,019,932 | | | $ | 6,300 | | | $ | 471 | | | $ | 436 | | | $ | 7,105 | | | $ | 4,034,244 | |
| | | December 31, 2025 | |
| | | | | | | | | | | | | | | 90 Days | | | | | | | | | |
| | | Accruing | | | 30 - 59 Days | | | 60 - 89 Days | | | or More | | | | | | | Total | |
| (dollars in thousands) | | Current | | | Past Due | | | Past Due | | | Past Due | | | Nonaccrual | | | Loans | |
| Commercial | | | | | | | | | | | | | | | | | | | | | | | | |
| Commercial and business lending | | | | | | | | | | | | | | | | | | | | | | | | |
| Commercial and industrial | | $ | 723,436 | | | $ | 689 | | | $ | — | | | $ | — | | | $ | 12,708 | | | $ | 736,833 | |
| Commercial real estate − Owner occupied | | | 426,803 | | | | — | | | | 314 | | | | — | | | | 143 | | | | 427,260 | |
| Total commercial and business lending | | | 1,150,239 | | | | 689 | | | | 314 | | | | — | | | | 12,851 | | | | 1,164,093 | |
| Investor commercial real estate | | | | | | | | | | | | | | | | | | | | | | | | |
| Construction, land and development | | | 212,515 | | | | — | | | | — | | | | — | | | | 33,723 | | | | 246,238 | |
| Multifamily | | | 373,308 | | | | — | | | | — | | | | — | | | | 10,197 | | | | 383,505 | |
| Non-owner occupied | | | 874,042 | | | | 163 | | | | — | | | | — | | | | 1,657 | | | | 875,862 | |
| Total investor commercial real estate | | | 1,459,865 | | | | 163 | | | | — | | | | — | | | | 45,577 | | | | 1,505,605 | |
| Agricultural | | | | | | | | | | | | | | | | | | | | | | | | |
| Land | | | 63,961 | | | | 674 | | | | — | | | | — | | | | 164 | | | | 64,799 | |
| Production | | | 62,105 | | | | 53 | | | | — | | | | — | | | | 342 | | | | 62,500 | |
| Total agricultural | | | 126,066 | | | | 727 | | | | — | | | | — | | | | 506 | | | | 127,299 | |
| Total commercial | | | 2,736,170 | | | | 1,579 | | | | 314 | | | | — | | | | 58,934 | | | | 2,796,997 | |
| Consumer | | | | | | | | | | | | | | | | | | | | | | | | |
| Residential real estate | | | | | | | | | | | | | | | | | | | | | | | | |
| First lien | | | 869,291 | | | | 2,051 | | | | 794 | | | | — | | | | 2,601 | | | | 874,737 | |
| Construction | | | 29,023 | | | | — | | | | — | | | | — | | | | 4,680 | | | | 33,703 | |
| HELOC | | | 260,467 | | | | 287 | | | | — | | | | — | | | | 129 | | | | 260,883 | |
| Junior lien | | | 34,362 | | | | 107 | | | | — | | | | — | | | | 2,375 | | | | 36,844 | |
| Total residential real estate | | | 1,193,143 | | | | 2,445 | | | | 794 | | | | — | | | | 9,785 | | | | 1,206,167 | |
| Other consumer | | | 44,471 | | | | 37 | | | | 4 | | | | — | | | | 346 | | | | 44,858 | |
| Total consumer | | | 1,237,614 | | | | 2,482 | | | | 798 | | | | — | | | | 10,131 | | | | 1,251,025 | |
| Total | | $ | 3,973,784 | | | $ | 4,061 | | | $ | 1,112 | | | $ | — | | | $ | 69,065 | | | $ | 4,048,022 | |
|
| Financing Receivable, Nonaccrual [Table Text Block] |
| | | As of June 30, 2026 | |
| | | | | | | | | | | 90 Days | |
| | | Nonaccrual | | | | | | | or More | |
| | | with no Allowance | | | | | | | Past Due | |
| (dollars in thousands) | | for Credit Losses | | | Nonaccrual | | | and Accruing | |
| Commercial | | | | | | | | | | | | |
| Commercial and business lending | | | | | | | | | | | | |
| Commercial and industrial | | $ | 401 | | | $ | 2,962 | | | $ | — | |
| Commercial real estate − Owner occupied | | | 82 | | | | 136 | | | | — | |
| Total commercial and business lending | | | 483 | | | | 3,098 | | | | — | |
| Investor commercial real estate | | | | | | | | | | | | |
| Construction, land and development | | | — | | | | — | | | | — | |
| Multifamily | | | 203 | | | | 872 | | | | — | |
| Non-owner occupied | | | 151 | | | | 151 | | | | — | |
| Total investor commercial real estate | | | 354 | | | | 1,023 | | | | — | |
| Agricultural | | | | | | | | | | | | |
| Land | | | 149 | | | | 149 | | | | — | |
| Production | | | — | | | | — | | | | — | |
| Total agricultural | | | 149 | | | | 149 | | | | — | |
| Total commercial | | | 986 | | | | 4,270 | | | | — | |
| Consumer | | | | | | | | | | | | |
| Residential real estate | | | | | | | | | | | | |
| First lien | | | 1,799 | | | | 1,901 | | | | 436 | |
| Construction | | | — | | | | — | | | | — | |
| HELOC | | | 391 | | | | 588 | | | | — | |
| Junior lien | | | — | | | | 72 | | | | — | |
| Total residential real estate | | | 2,190 | | | | 2,561 | | | | 436 | |
| Other consumer | | | — | | | | 274 | | | | — | |
| Total consumer | | | 2,190 | | | | 2,835 | | | | 436 | |
| Total | | $ | 3,176 | | | $ | 7,105 | | | $ | 436 | |
| | | December 31, 2025 | |
| | | | | | | | | | | 90 Days | |
| | | Nonaccrual | | | | | | | or More | |
| | | with no Allowance | | | | | | | Past Due | |
| (dollars in thousands) | | for Credit Losses | | | Nonaccrual | | | and Accruing | |
| Commercial | | | | | | | | | | | | |
| Commercial and business lending | | | | | | | | | | | | |
| Commercial and industrial | | $ | — | | | $ | 12,708 | | | $ | — | |
| Commercial real estate − Owner occupied | | | 89 | | | | 143 | | | | — | |
| Total commercial and business lending | | | 89 | | | | 12,851 | | | | — | |
| Investor commercial real estate | | | | | | | | | | | | |
| Construction, land and development | | | 26,475 | | | | 33,723 | | | | — | |
| Multifamily | | | 4,733 | | | | 10,197 | | | | — | |
| Non-owner occupied | | | 1,657 | | | | 1,657 | | | | — | |
| Total investor commercial real estate | | | 32,865 | | | | 45,577 | | | | — | |
| Agricultural | | | | | | | | | | | | |
| Land | | | 164 | | | | 164 | | | | — | |
| Production | | | — | | | | 342 | | | | — | |
| Total agricultural | | | 164 | | | | 506 | | | | — | |
| Total commercial | | | 33,118 | | | | 58,934 | | | | — | |
| Consumer | | | | | | | | | | | | |
| Residential real estate | | | | | | | | | | | | |
| First lien | | | 2,298 | | | | 2,601 | | | | — | |
| Construction | | | 4,680 | | | | 4,680 | | | | — | |
| HELOC | | | — | | | | 129 | | | | — | |
| Junior lien | | | 2,305 | | | | 2,375 | | | | — | |
| Total residential real estate | | | 9,283 | | | | 9,785 | | | | — | |
| Other consumer | | | — | | | | 346 | | | | — | |
| Total consumer | | | 9,283 | | | | 10,131 | | | | — | |
| Total | | $ | 42,401 | | | $ | 69,065 | | | $ | — | |
|
| Financing Receivable, Collateral Dependant [Table Text Block] |
| | | As of June 30, 2026 | |
| | | Primary Type of Collateral | |
| | | | | | | | | | | | | | | | | | | Allowance for | |
| (dollars in thousands) | | Real estate | | | Equipment | | | Other | | | Total | | | Credit Losses | |
| Commercial | | | | | | | | | | | | | | | | | | | | |
| Commercial and business lending | | | | | | | | | | | | | | | | | | | | |
| Commercial and industrial | | $ | — | | | $ | 1,624 | | | $ | 1,284 | | | $ | 2,908 | | | $ | 1,890 | |
| Commercial real estate − Owner occupied | | | 136 | | | | — | | | | — | | | | 136 | | | | 4 | |
| Total commercial and business lending | | | 136 | | | | 1,624 | | | | 1,284 | | | | 3,044 | | | | 1,894 | |
| Investor commercial real estate | | | | | | | | | | | | | | | | | | | | |
| Construction, land and development | | | — | | | | — | | | | — | | | | — | | | | — | |
| Multifamily | | | 872 | | | | — | | | | — | | | | 872 | | | | 4 | |
| Non-owner occupied | | | 151 | | | | — | | | | — | | | | 151 | | | | — | |
| Total investor commercial real estate | | | 1,023 | | | | — | | | | — | | | | 1,023 | | | | 4 | |
| Agricultural | | | | | | | | | | | | | | | | | | | | |
| Land | | | 149 | | | | — | | | | — | | | | 149 | | | | — | |
| Production | | | — | | | | — | | | | — | | | | — | | | | — | |
| Total agricultural | | | 149 | | | | — | | | | — | | | | 149 | | | | — | |
| Total commercial | | | 1,308 | | | | 1,624 | | | | 1,284 | | | | 4,216 | | | | 1,898 | |
| Consumer | | | | | | | | | | | | | | | | | | | | |
| Residential real estate | | | | | | | | | | | | | | | | | | | | |
| First lien | | | 1,848 | | | | — | | | | — | | | | 1,848 | | | | 15 | |
| Construction | | | — | | | | — | | | | — | | | | — | | | | — | |
| HELOC | | | 391 | | | | — | | | | — | | | | 391 | | | | — | |
| Junior lien | | | — | | | | — | | | | — | | | | — | | | | — | |
| Total residential real estate | | | 2,239 | | | | — | | | | — | | | | 2,239 | | | | 15 | |
| Other consumer | | | — | | | | — | | | | 274 | | | | 274 | | | | 274 | |
| Total consumer | | | 2,239 | | | | — | | | | 274 | | | | 2,513 | | | | 289 | |
| Total | | $ | 3,547 | | | $ | 1,624 | | | $ | 1,558 | | | $ | 6,729 | | | $ | 2,187 | |
| | | As of December 31, 2025 | |
| | | Primary Type of Collateral | |
| | | | | | | | | | | | | | | | | | | Allowance for | |
| (dollars in thousands) | | Real estate | | | Equipment | | | Other | | | Total | | | Credit Losses | |
| Commercial | | | | | | | | | | | | | | | | | | | | |
| Commercial and business lending | | | | | | | | | | | | | | | | | | | | |
| Commercial and industrial | | $ | 651 | | | $ | — | | | $ | — | | | $ | 651 | | | $ | 43 | |
| Commercial real estate − Owner occupied | | | 142 | | | | — | | | | — | | | | 142 | | | | 4 | |
| Total commercial and business lending | | | 793 | | | | — | | | | — | | | | 793 | | | | 47 | |
| Investor commercial real estate | | | | | | | | | | | | | | | | | | | | |
| Construction, land and development | | | 33,723 | | | | — | | | | — | | | | 33,723 | | | | 5,635 | |
| Multifamily | | | 10,197 | | | | — | | | | — | | | | 10,197 | | | | 865 | |
| Non-owner occupied | | | 1,657 | | | | — | | | | — | | | | 1,657 | | | | — | |
| Total investor commercial real estate | | | 45,577 | | | | — | | | | — | | | | 45,577 | | | | 6,500 | |
| Agricultural | | | | | | | | | | | | | | | | | | | | |
| Land | | | 164 | | | | — | | | | — | | | | 164 | | | | — | |
| Production | | | — | | | | — | | | | 342 | | | | 342 | | | | 42 | |
| Total agricultural | | | 164 | | | | — | | | | 342 | | | | 506 | | | | 42 | |
| Total commercial | | | 46,534 | | | | — | | | | 342 | | | | 46,876 | | | | 6,589 | |
| Consumer | | | | | | | | | | | | | | | | | | | | |
| Residential real estate | | | | | | | | | | | | | | | | | | | | |
| First lien | | | 2,528 | | | | — | | | | — | | | | 2,528 | | | | 229 | |
| Construction | | | 4,680 | | | | — | | | | — | | | | 4,680 | | | | — | |
| HELOC | | | — | | | | — | | | | — | | | | — | | | | — | |
| Junior lien | | | 2,304 | | | | — | | | | — | | | | 2,304 | | | | — | |
| Total residential real estate | | | 9,512 | | | | — | | | | — | | | | 9,512 | | | | 229 | |
| Other consumer | | | — | | | | — | | | | 319 | | | | 319 | | | | 319 | |
| Total consumer | | | 9,512 | | | | — | | | | 319 | | | | 9,831 | | | | 548 | |
| Total | | $ | 56,046 | | | $ | — | | | $ | 661 | | | $ | 56,707 | | | $ | 7,137 | |
|
| Financing Receivable, Modified [Table Text Block] |
| | | Three months ended June 30, 2026 | |
| | | | | | | | | | | | | | | | | | | Combination Term | | | Combination Term | | | | | |
| | | Interest Rate | | | Principal | | | Term | | | Payment | | | Extension and | | | Extension and Interest | | | Total % | |
| (dollars in thousands) | | Reduction | | | Forgiveness | | | Extension | | | Delay | | | Principal Forgiveness | | | Rate Reduction | | | of Portfolio | |
| Commercial and industrial | | $ | — | | | $ | — | | | $ | — | | | $ | 796 | | | $ | — | | | $ | — | | | | 0.1 | % |
| | | Six months ended June 30, 2026 | |
| | | | | | | | | | | | | | | | | | | Combination Term | | | Combination Term | | | | | |
| | | Interest Rate | | | Principal | | | Term | | | Payment | | | Extension and | | | Extension and Interest | | | Total % | |
| (dollars in thousands) | | Reduction | | | Forgiveness | | | Extension | | | Delay | | | Principal Forgiveness | | | Rate Reduction | | | of Portfolio | |
| Commercial and industrial | | $ | — | | | $ | — | | | $ | — | | | $ | 796 | | | $ | — | | | $ | — | | | | 0.1 | % |
| | | Three months ended June 30, 2025 | |
| | | | | | | | | | | | | | | | | | | Combination Term | | | Combination Term | | | | | |
| | | Interest Rate | | | Principal | | | Term | | | Payment | | | Extension and | | | Extension and Interest | | | Total % | |
| (dollars in thousands) | | Reduction | | | Forgiveness | | | Extension | | | Delay | | | Principal Forgiveness | | | Rate Reduction | | | of Portfolio | |
| Agricultural − Land | | | — | | | | — | | | | — | | | | 1,457 | | | | — | | | | — | | | | 2.2 | % |
| | | Six months ended June 30, 2025 | |
| | | | | | | | | | | | | | | | | | | Combination Term | | | Combination Term | | | | | |
| | | Interest Rate | | | Principal | | | Term | | | Payment | | | Extension and | | | Extension and Interest | | | Total % | |
| (dollars in thousands) | | Reduction | | | Forgiveness | | | Extension | | | Delay | | | Principal Forgiveness | | | Rate Reduction | | | of Portfolio | |
| Agricultural − Land | | $ | — | | | $ | — | | | $ | — | | | $ | 1,457 | | | $ | — | | | $ | — | | | | 2.2 | % |
|