Note 5 - Credit Assets, Net of Allowance for Credit Losses - Expected Credit Loss Sensitivity (Details) - Loans [member] - Provision for credit commitments [member] - CAD ($) $ in Thousands |
Apr. 30, 2026 |
Oct. 31, 2025 |
Apr. 30, 2025 |
|---|---|---|---|
| Statement Line Items [Line Items] | |||
| Allowance for expected credit losses | $ 8,342 | $ 7,279 | $ 4,958 |
| Upside, 100% [member] | |||
| Statement Line Items [Line Items] | |||
| Allowance for expected credit losses | 7,819 | ||
| Provision (recovery) from reported ECL | $ (523) | ||
| Variance from reported ECL (%) | (6.00%) | ||
| Baseline, 100% [member] | |||
| Statement Line Items [Line Items] | |||
| Allowance for expected credit losses | $ 8,266 | ||
| Provision (recovery) from reported ECL | $ (75) | ||
| Variance from reported ECL (%) | (1.00%) | ||
| Downside, 100% [member] | |||
| Statement Line Items [Line Items] | |||
| Allowance for expected credit losses | $ 8,926 | ||
| Provision (recovery) from reported ECL | $ 584 | ||
| Variance from reported ECL (%) | 7.00% |