| Schedule of fair values of assets and liabilities measured on recurring and non-recurring basis |
| | | | | | | | | | | | | | | | | | June 30, 2026 | | | | | | | | | | | | | | | Total Gains | (Dollars in thousands) | | Total | | Level 1 | | Level 2 | | Level 3 | | (Losses) | Assets | | | | | | | | | | | | | | | | Recurring fair value measurements: | | | | | | | | | | | | | | | | Securities available for sale: | | | | | | | | | | | | | | | | Obligations of U.S. Government entities and agencies | | $ | 2,502 | | $ | — | | $ | — | | $ | 2,502 | | | | States and political subdivisions | | | 6,642 | | | — | | | 6,642 | | | — | | | | Mortgage-backed GSE residential | | | 17,039 | | | — | | | 17,039 | | | — | | | | Total securities available for sale | | | 26,183 | | | — | | | 23,681 | | | 2,502 | | | | | | | | | | | | | | | | | | | | Equity securities | | | 18,481 | | | 18,481 | | | — | | | — | | | | SBA and USDA servicing asset | | | 11,180 | | | — | | | — | | | 11,180 | | | | Interest rate derivatives | | | 4,791 | | | — | | | 4,791 | | | — | | | | | | $ | 60,635 | | $ | 18,481 | | $ | 28,472 | | $ | 13,682 | | | | Nonrecurring fair value measurements: | | | | | | | | | | | | | | | | Collateral-dependent loans | | $ | 7,601 | | $ | — | | $ | — | | $ | 7,601 | | $ | 79 | | | | | | | | | | | | | | | | | Liabilities | | | | | | | | | | | | | | | | Recurring fair value measurements: | | | | | | | | | | | | | | | | Interest rate derivatives | | $ | 430 | | $ | — | | $ | 430 | | $ | — | | | |
| | | | | | | | | | | | | | | | | | December 31, 2025 | | | | | | | | | | | | | | | Total Gains | (Dollars in thousands) | | Total | | Level 1 | | Level 2 | | Level 3 | | (Losses) | Assets | | | | | | | | | | | | | | | | Recurring fair value measurements: | | | | | | | | | | | | | | | | Securities available for sale: | | | | | | | | | | | | | | | | Obligations of U.S. Government entities and agencies | | $ | 12,542 | | $ | — | | $ | 9,947 | | $ | 2,595 | | | | States and political subdivisions | | | 10,144 | | | — | | | 10,144 | | | — | | | | Mortgage-backed GSE residential | | | 24,493 | | | — | | | 24,493 | | | — | | | | Total securities available for sale | | | 47,179 | | | — | | | 44,584 | | | 2,595 | | | | | | | | | | | | | | | | | | | | Equity securities | | | 18,646 | | | 18,646 | | | — | | | — | | | | SBA and USDA servicing asset | | | 10,601 | | | — | | | — | | | 10,601 | | | | Interest rate derivatives | | | 6,343 | | | — | | | 6,343 | | | — | | | | | | $ | 82,769 | | $ | 18,646 | | $ | 50,927 | | $ | 13,196 | | | | Nonrecurring fair value measurements: | | | | | | | | | | | | | | | | Collateral-dependent loans | | $ | 1,658 | | | — | | | — | | | 1,658 | | $ | 231 | | | | | | | | | | | | | | | | | Liabilities | | | | | | | | | | | | | | | | Recurring fair value measurements: | | | | | | | | | | | | | | | | Interest rate swaps | | $ | 451 | | $ | — | | $ | 451 | | $ | — | | | |
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| Schedule of reconciliation of fair values of assets and liabilities measured on recurring basis using unobservable inputs |
| | | | | | Obligations of | (Dollars in thousands) | | U.S. Government | Three Months Ended: | | Entities and Agencies | Fair value, April 1, 2026 | | $ | 2,532 | Total gains included in income | | | — | Settlements | | | — | Prepayments/paydowns | | | (30) | Transfers in and/or out of Level 3 | | | — | Fair value, June 30, 2026 | | $ | 2,502 | | | | | Fair value, April 1, 2025 | | $ | 2,563 | Total gains included in income | | | — | Settlements | | | — | Prepayments/paydowns | | | (29) | Transfers in and/or out of Level 3 | | | — | Fair value, June 30, 2025 | | $ | 2,534 | | | | | Six Months Ended: | | | | Fair value, January 1, 2026 | | $ | 2,595 | Total losses included in income | | | — | Settlements | | | — | Prepayments/paydowns | | | (93) | Transfers in and/or out of Level 3 | | | — | Fair value, June 30, 2026 | | $ | 2,502 | | | | | Fair value, January 1, 2025 | | $ | 4,467 | Total gains included in income | | | — | Settlements | | | — | Prepayments/paydowns | | | (1,933) | Transfers in and/or out of Level 3 | | | — | Fair value, June 30, 2025 | | $ | 2,534 |
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| Schedule of carrying amounts and estimated fair values of company's financial instruments |
| | | | | | | | | | | | | | | | | | Carrying | | | Estimated Fair Value at June 30, 2026 | (Dollars in thousands) | | Amount | | Level 1 | | Level 2 | | Level 3 | | Total | Financial Assets: | | | | | | | | | | | | | | | | Cash, due from banks, and federal funds sold | | $ | 266,690 | | $ | — | | $ | 266,690 | | $ | — | | $ | 266,690 | Investment securities | | | 44,664 | | | 18,481 | | | 23,681 | | | 2,502 | | | 44,664 | Loans held for sale | | | 1,350 | | | — | | | 1,350 | | | — | | | 1,350 | Loans, net | | | 3,930,501 | | | — | | | — | | | 3,916,351 | | | 3,916,351 | Accrued interest receivable | | | 20,115 | | | — | | | 167 | | | 19,948 | | | 20,115 | SBA and USDA servicing asset | | | 11,180 | | | — | | | — | | | 11,180 | | | 11,180 | Mortgage servicing asset | | | 1,308 | | | — | | | — | | | 5,623 | | | 5,623 | Interest rate derivatives | | | 4,791 | | | — | | | 4,791 | | | — | | | 4,791 | Financial Liabilities: | | | | | | | | | | | | | | | | Deposits | | | 3,489,357 | | | — | | | 3,482,727 | | | — | | | 3,482,727 | Federal Home Loan Bank advances | | | 375,000 | | | — | | | 375,488 | | | — | | | 375,488 | Accrued interest payable | | | 7,537 | | | — | | | 7,537 | | | — | | | 7,537 | Interest rate derivatives | | | 430 | | | — | | | 430 | | | — | | | 430 |
| | | | | | | | | | | | | | | | | | Carrying | | Estimated Fair Value at December 31, 2025 | (Dollars in thousands) | | Amount | | Level 1 | | Level 2 | | Level 3 | | Total | Financial Assets: | | | | | | | | | | | | | | | | Cash, due from banks, and federal funds sold | | $ | 383,676 | | $ | — | | $ | 383,676 | | $ | — | | $ | 383,676 | Investment securities | | | 65,825 | | | 18,646 | | | 44,584 | | | 2,595 | | | 65,825 | Loans held for sale | | | 9,741 | | | — | | | 9,741 | | | — | | | 9,741 | Loans, net | | | 4,023,554 | | | — | | | — | | | 3,964,005 | | | 3,964,005 | Accrued interest receivable | | | 20,298 | | | — | | | 344 | | | 19,954 | | | 20,298 | SBA and USDA servicing assets | | | 10,601 | | | — | | | — | | | 10,601 | | | 10,601 | Mortgage servicing assets | | | 1,660 | | | — | | | — | | | 5,659 | | | 5,659 | Interest rate derivatives | | | 6,343 | | | — | | | 6,343 | | | — | | | 6,343 | Financial Liabilities: | | | | | | | | | | | | | | | | Deposits | | | 3,646,001 | | | — | | | 3,645,272 | | | — | | | 3,645,272 | Federal Home Loan Bank advances | | | 510,000 | | | — | | | 513,060 | | | — | | | 513,060 | Accrued interest payable | | | 10,731 | | | — | | | 10,731 | | | — | | | 10,731 | Interest rate derivatives | | | 451 | | | | | | 451 | | | | | | 451 | | | | | | | | | | | | | | | | |
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