| Fair Value, by Balance Sheet Grouping [Table Text Block] |
| | | | | | | Fair Value Measurements at | |
| | | Carrying | | | June 30, 2026 | |
| (In thousands) | | Amount | | | Level 1 | | | Level 2 | | | Level 3 | | | Total | |
| Financial assets: | | | | | | | | | | | | | | | | | | | | |
| Cash and due from financial institutions | | $ | 13,897 | | | $ | 13,897 | | | $ | - | | | $ | - | | | $ | 13,897 | |
| Due from Federal Reserve Bank and interest-bearing deposits in banks | | | 146,012 | | | | 146,012 | | | | - | | | | - | | | | 146,012 | |
| Loans, net | | | 2,202,618 | | | | - | | | | - | | | | 2,191,269 | | | | 2,191,269 | |
| Accrued interest receivable | | | 9,795 | | | | 9,795 | | | | - | | | | - | | | | 9,795 | |
| | | | | | | | | | | | | | | | | | | | | |
| Financial liabilities: | | | | | | | | | | | | | | | | | | | | |
| Interest-bearing deposits | | | 1,753,439 | | | | - | | | | 1,685,627 | | | | - | | | | 1,685,627 | |
| Subordinated debentures, net | | | 22,000 | | | | - | | | | - | | | | 24,336 | | | | 24,336 | |
| Accrued interest payable | | | 434 | | | | 434 | | | | - | | | | - | | | | 434 | |
| | | | | | | Fair Value Measurements at | |
| | | Carrying | | | December 31, 2025 | |
| (In thousands) | | Amount | | | Level 1 | | | Level 2 | | | Level 3 | | | Total | |
| Financial assets: | | | | | | | | | | | | | | | | | | | | |
| Cash and due from financial institutions | | $ | 7,942 | | | $ | 7,942 | | | $ | - | | | $ | - | | | $ | 7,942 | |
| Due from Federal Reserve Bank and interest-bearing deposits in banks | | | 146,627 | | | | 146,627 | | | | - | | | | - | | | | 146,627 | |
| Loans, net | | | 2,126,178 | | | | - | | | | - | | | | 2,110,338 | | | | 2,110,338 | |
| Accrued interest receivable | | | 9,297 | | | | 9,297 | | | | - | | | | - | | | | 9,297 | |
| | | | | | | | | | | | | | | | | | | | | |
| Financial liabilities: | | | | | | | | | | | | | | | | | | | | |
| Interest-bearing deposits | | | 1,629,101 | | | | - | | | | 1,581,867 | | | | - | | | | 1,581,867 | |
| Subordinated debentures, net | | | 22,000 | | | | - | | | | - | | | | 24,645 | | | | 24,645 | |
| Short-term borrowings | | | 60,000 | | | | 60,000 | | | | - | | | | - | | | | 60,000 | |
| Accrued interest payable | | | 142 | | | | 142 | | | | - | | | | - | | | | 142 | |
|
| Fair Value, Assets Measured on Recurring Basis [Table Text Block] |
| | | June 30, 2026 | |
| (In thousands) | | Fair Value | | | Level 1 | | | Level 2 | | | Level 3 | |
| Securities available-for-sale | | | | | | | | | | | | | | | | |
| U.S. Treasury securities and obligations of U.S. government agencies | | $ | 403 | | | $ | - | | | $ | 403 | | | $ | - | |
| Commercial mortgage-backed securities | | | 15,853 | | | | - | | | | 15,853 | | | | - | |
| Residential mortgage-backed securities | | | 211,214 | | | | - | | | | 211,214 | | | | - | |
| U.S. states and political subdivisions | | | 4,726 | | | | - | | | | 4,726 | | | | - | |
| Total securities available-for-sale | | $ | 232,196 | | | $ | - | | | $ | 232,196 | | | $ | - | |
| | | December 31, 2025 | |
| (In thousands) | | Fair Value | | | Level 1 | | | Level 2 | | | Level 3 | |
| Securities available-for-sale | | | | | | | | | | | | | | | | |
| U.S. Treasury securities and obligations of U.S. government agencies | | $ | 458 | | | $ | - | | | $ | 458 | | | $ | - | |
| Commercial mortgage-backed securities | | | 5,430 | | | | - | | | | 5,430 | | | | - | |
| Residential mortgage-backed securities | | | 207,552 | | | | - | | | | 207,552 | | | | - | |
| U.S. states and political subdivisions | | | 4,720 | | | | - | | | | 4,720 | | | | - | |
| Total securities available-for-sale | | $ | 218,160 | | | $ | - | | | $ | 218,160 | | | $ | - | |
|