| Disclosure of detailed information about financial instruments [text block] |
| (thousands of Canadian dollars) | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | April 30, 2026 | | | October 31, 2025 | |
| | | Carrying
Value | | | Fair value Level 1 | | | Fair Value Level 2 | | | Fair Value Level 3 | | | Total Fair Value | | | Carrying
Value | | | Fair value Level 1 | | | Fair Value Level 2 | | | Fair Value Level 3 | | | Total Fair Value | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Assets | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Cash | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Amortized cost | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | - | | | $ | - | |
| FVOCI | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| FVTPL | | | 568,161 | | | | 568,161 | | | | - | | | | - | | | | 568,161 | | | | 581,710 | | | | 581,710 | | | | - | | | | - | | | | 581,710 | |
| Securities | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Amortized cost | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| FVOCI | | | 106,277 | | | | 106,277 | | | | - | | | | - | | | | 106,277 | | | | 80,923 | | | | 80,923 | | | | - | | | | - | | | | 80,923 | |
| FVTPL | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| Credit assets | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Amortized cost | | | 5,675,879 | | | | - | | | | - | | | | 5,689,659 | | | | 5,689,659 | | | | 5,066,378 | | | | - | | | | - | | | | 5,050,931 | | | | 5,050,931 | |
| FVOCI | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| FVTPL | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| Derivative instruments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Amortized cost | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| FVOCI | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| FVTPL | | | 5,154 | | | | - | | | | 5,154 | | | | - | | | | 5,154 | | | | - | | | | - | | | | - | | | | - | | | | - | |
| Other financial assets | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Amortized cost | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| FVOCI | | | - | | | | - | | | | - | | | | - | | | | - | | | | 953 | | | | - | | | | - | | | | 953 | | | | 953 | |
| FVTPL | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Liabilities | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Deposits | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Amortized cost | | $ | 5,520,909 | | | $ | - | | | $ | - | | | $ | 5,524,481 | | | $ | 5,524,481 | | | $ | 4,860,863 | | | $ | - | | | $ | - | | | $ | 4,918,431 | | | $ | 4,918,431 | |
| FVOCI | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| FVTPL | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| Subordinated notes payable | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Amortized cost | | | 100,688 | | | | - | | | | 97,071 | | | | - | | | | 97,071 | | | | 103,516 | | | | - | | | | 99,878 | | | | - | | | | 99,878 | |
| FVOCI | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| FVTPL | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| Derivative instruments | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Amortized cost | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| FVOCI | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| FVTPL | | | - | | | | - | | | | - | | | | - | | | | - | | | | 416 | | | | - | | | | 416 | | | | - | | | | 416 | |
| Other financial liabilities | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Amortized cost | | | 265,361 | | | | - | | | | - | | | | 265,361 | | | | 265,361 | | | | 310,874 | | | | - | | | | - | | | | 310,874 | | | | 310,874 | |
| FVOCI | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
| FVTPL | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | | | | - | |
|