| Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
| | | Three months ended June 30, | | | Six months ended June 30, | |
| | | 2026 | | | 2025 | | | 2026 | | | 2025 | |
| | | (Dollars in thousands except share and per share data) | | | (Dollars in thousands except share and per share data) | |
| Basic earnings per common share | | | | | | | | | | | | | | | | |
| Net income available to the Company | | $ | 12,241 | | | $ | 8,283 | | | $ | 24,085 | | | $ | 16,061 | |
| Less: Dividend on series B preferred stock | | | (5 | ) | | | (5 | ) | | | (10 | ) | | | (10 | ) |
| Net income available to common shareholders | | | 12,236 | | | | 8,278 | | | | 24,075 | | | | 16,051 | |
| Basic weighted-average common shares outstanding | | | 11,725,654 | | | | 11,843,328 | | | | 11,716,114 | | | | 11,839,856 | |
| Basic earnings per common share | | $ | 1.04 | | | $ | 0.70 | | | $ | 2.05 | | | $ | 1.36 | |
| Diluted earnings per common share | | | | | | | | | | | | | | | | |
| Net income available to common shares | | $ | 12,236 | | | $ | 8,278 | | | $ | 24,075 | | | $ | 16,051 | |
| Add: Dividend on series B preferred stock | | | 5 | | | | 5 | | | | 10 | | | | 10 | |
| Net income available to diluted common shares | | | 12,241 | | | | 8,283 | | | | 24,085 | | | | 16,061 | |
| Basic weighted-average common shares outstanding | | | 11,725,654 | | | | 11,843,328 | | | | 11,716,114 | | | | 11,839,856 | |
| Dilutive potential common shares | | | 196,743 | | | | 164,896 | | | | 196,972 | | | | 167,738 | |
| Diluted weighted-average common shares outstanding | | | 11,922,397 | | | | 12,008,224 | | | | 11,913,086 | | | | 12,007,594 | |
| Diluted earnings per common share | | $ | 1.03 | | | $ | 0.69 | | | $ | 2.02 | | | $ | 1.34 | |
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