| Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] |
| | | June 30, 2026 | |
| | | Level 1 | | | Level 2 | | | Level 3 | | | Total Fair | |
| | | Inputs | | | Inputs | | | Inputs | | | Value | |
| | | (In Thousands) | |
| Financial assets: | | | | | | | | | | | | | | | | |
| Available-for-sale securities: | | | | | | | | | | | | | | | | |
| U.S. government and agency obligations | | $ | - | | | $ | 3,830 | | | $ | - | | | $ | 3,830 | |
| U.S. treasury obligations | | | 44,098 | | | | - | | | | - | | | | 44,098 | |
| Municipal obligations | | | - | | | | 125,665 | | | | - | | | | 125,665 | |
| Corporate obligations | | | - | | | | 997 | | | | - | | | | 997 | |
| Mortgage-backed securities | | | - | | | | 25,238 | | | | - | | | | 25,238 | |
| Collateralized mortgage obligations | | | - | | | | 79,549 | | | | - | | | | 79,549 | |
| Asset-backed securities | | | - | | | | 6,299 | | | | - | | | | 6,299 | |
| Loans held-for-sale | | | - | | | | 15,972 | | | | - | | | | 15,972 | |
| Financial liabilities: | | | | | | | | | | | | | | | | |
| Forward TBA mortgage-backed securities | | | - | | | | 21 | | | | - | | | | 21 | |
| Interest rate lock commitments | | | - | | | | - | | | | 70 | | | | 70 | |
| | | December 31, 2025 | |
| | | Level 1 | | | Level 2 | | | Level 3 | | | Total Fair | |
| | | Inputs | | | Inputs | | | Inputs | | | Value | |
| | | (In Thousands) | |
| Financial assets: | | | | | | | | | | | | | | | | |
| Available-for-sale securities: | | | | | | | | | | | | | | | | |
| U.S. government and agency obligations | | $ | - | | | $ | 4,155 | | | $ | - | | | $ | 4,155 | |
| U.S. treasury obligations | | | 44,308 | | | | - | | | | - | | | | 44,308 | |
| Municipal obligations | | | - | | | | 118,324 | | | | - | | | | 118,324 | |
| Corporate obligations | | | - | | | | 1,971 | | | | - | | | | 1,971 | |
| Mortgage-backed securities | | | - | | | | 26,494 | | | | - | | | | 26,494 | |
| Collateralized mortgage obligations | | | - | | | | 79,661 | | | | - | | | | 79,661 | |
| Asset-backed securities | | | - | | | | 6,779 | | | | - | | | | 6,779 | |
| Loans held-for-sale | | | - | | | | 7,452 | | | | - | | | | 7,452 | |
| Financial liabilities: | | | | | | | | | | | | | | | | |
| Forward TBA mortgage-backed securities | | | - | | | | 55 | | | | - | | | | 55 | |
| Interest rate lock commitments | | | - | | | | - | | | | 49 | | | | 49 | |
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| Fair Value, by Balance Sheet Grouping [Table Text Block] |
| | | June 30, 2026 | |
| | | Level 1 | | | Level 2 | | | Level 3 | | | Total | | | Carrying | |
| | | Inputs | | | Inputs | | | Inputs | | | Fair Value | | | Amount | |
| | | (In Thousands) | |
| Financial assets: | | | | | | | | | | | | | | | | | | | | |
| Cash and cash equivalents | | $ | 28,960 | | | $ | - | | | $ | - | | | $ | 28,960 | | | $ | 28,960 | |
| FHLB stock | | | - | | | | 5,001 | | | | - | | | | 5,001 | | | | 5,001 | |
| FRB stock | | | - | | | | 4,131 | | | | - | | | | 4,131 | | | | 4,131 | |
| Loans receivable, gross | | | - | | | | - | | | | 1,544,163 | | | | 1,544,163 | | | | 1,558,344 | |
| Mortgage servicing rights | | | - | | | | - | | | | 19,815 | | | | 19,815 | | | | 14,885 | |
| Financial liabilities: | | | | | | | | | | | | | | | | | | | | |
| Time certificates of deposit | | | - | | | | - | | | | 465,517 | | | | 465,517 | | | | 467,433 | |
| FHLB advances and other borrowings | | | - | | | | - | | | | 52,150 | | | | 52,150 | | | | 52,102 | |
| Other long-term debt | | | - | | | | - | | | | 44,401 | | | | 44,401 | | | | 45,155 | |
| | | December 31, 2025 | |
| | | Level 1 | | | Level 2 | | | Level 3 | | | Total | | | Carrying | |
| | | Inputs | | | Inputs | | | Inputs | | | Fair Value | | | Amount | |
| | | (In Thousands) | |
| Financial assets: | | | | | | | | | | | | | | | | | | | | |
| Cash and cash equivalents | | $ | 62,962 | | | $ | - | | | $ | - | | | $ | 62,962 | | | $ | 62,962 | |
| FHLB stock | | | - | | | | 2,650 | | | | - | | | | 2,650 | | | | 2,650 | |
| FRB stock | | | - | | | | 4,131 | | | | - | | | | 4,131 | | | | 4,131 | |
| Loans receivable, gross | | | - | | | | - | | | | 1,493,348 | | | | 1,493,348 | | | | 1,519,019 | |
| Mortgage servicing rights | | | - | | | | - | | | | 20,302 | | | | 20,302 | | | | 15,043 | |
| Financial liabilities: | | | | | | | | | | | | | | | | | | | | |
| Time certificates of deposit | | | - | | | | - | | | | 461,201 | | | | 461,201 | | | | 462,172 | |
| Federal Funds Purchased | | | - | | | | - | | | | 105 | | | | 105 | | | | 105 | |
| FHLB advances and other borrowings | | | - | | | | - | | | | 38,447 | | | | 38,447 | | | | 37,917 | |
| Other long-term debt | | | - | | | | - | | | | 43,905 | | | | 43,905 | | | | 45,155 | |
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