| Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
| | | Unrealized | |
| | | (Losses) Gains | |
| | | on Securities | |
| | | Available for Sale | |
| | | (In Thousands) | |
| Balance at July 1, 2026 | | $ | (13,336 | ) |
| Other comprehensive loss, before reclassifications and income taxes | | | (10,076 | ) |
| Amounts reclassified from accumulated other comprehensive loss, before income taxes | | | - | |
| Income tax benefit | | | 2,648 | |
| Total other comprehensive loss | | | (7,428 | ) |
| Balance at September 30, 2026 | | $ | (20,764 | ) |
| | | | | |
| Balance at July 1, 2025 | | $ | (17,858 | ) |
| Other comprehensive income, before reclassifications and income taxes | | | 4,191 | |
| Amounts reclassified from accumulated other comprehensive loss, before income taxes | | | - | |
| Income tax provision | | | (1,103 | ) |
| Total other comprehensive income | | | 3,088 | |
| Balance at September 30, 2025 | | $ | (14,770 | ) |
| | | | | |
| Balance at January 1, 2026 | | $ | (12,874 | ) |
| Other comprehensive loss, before reclassifications and income taxes | | | (10,697 | ) |
| Amounts reclassified from accumulated other comprehensive loss, before income taxes | | | - | |
| Income tax benefit | | | 2,807 | |
| Total other comprehensive loss | | | (7,890 | ) |
| Balance at September 30, 2026 | | $ | (20,764 | ) |
| | | | | |
| Balance at January 1, 2025 | | $ | (20,146 | ) |
| Other comprehensive income, before reclassifications and income taxes | | | 7,306 | |
| Amounts reclassified from accumulated other comprehensive loss, before income taxes | | | - | |
| Income tax provision | | | (1,930 | ) |
| Total other comprehensive income | | | 5,376 | |
| Balance at September 30, 2025 | | $ | (14,770 | ) |
|