Note 21 - Fair Value of Financial Instruments - Fair Value of Financial Instruments (Details) - CAD ($) $ in Thousands	Oct. 31, 2025	Oct. 31, 2024
Deposits from banks [member]
Statement Line Items [Line Items]
Amortized cost, liabilities	$ 4,860,863	$ 4,144,673
FVOCI, liabilities	0	0
FVTPL, liabilities	0	0
Subordinated notes [member]
Statement Line Items [Line Items]
Amortized cost, liabilities	103,516	102,503
FVOCI, liabilities	0	0
FVTPL, liabilities	0	0
Derivative liabilities [member]
Statement Line Items [Line Items]
Amortized cost, liabilities	0	0
FVOCI, liabilities	0	0
FVTPL, liabilities	416	0
Other financial liabilities [member]
Statement Line Items [Line Items]
Amortized cost, liabilities	310,874	191,071
FVOCI, liabilities	0	0
FVTPL, liabilities	0	0
At fair value [member] | Deposits from banks [member]
Statement Line Items [Line Items]
Amortized cost, liabilities	4,918,431	4,182,338
FVOCI, liabilities	0	0
FVTPL, liabilities	0	0
At fair value [member] | Subordinated notes [member]
Statement Line Items [Line Items]
Amortized cost, liabilities	99,878	99,152
FVOCI, liabilities	0	0
FVTPL, liabilities	0	0
At fair value [member] | Derivative liabilities [member]
Statement Line Items [Line Items]
Amortized cost, liabilities	0	0
FVOCI, liabilities	0	0
FVTPL, liabilities	416	0
At fair value [member] | Other financial liabilities [member]
Statement Line Items [Line Items]
Amortized cost, liabilities	310,874	191,071
FVOCI, liabilities	0	0
FVTPL, liabilities	0	0
Level 1 of fair value hierarchy [member] | Deposits from banks [member]
Statement Line Items [Line Items]
Amortized cost, liabilities	0	0
FVOCI, liabilities	0	0
FVTPL, liabilities	0	0
Level 1 of fair value hierarchy [member] | Subordinated notes [member]
Statement Line Items [Line Items]
Amortized cost, liabilities	0	0
FVOCI, liabilities	0	0
FVTPL, liabilities	0	0
Level 1 of fair value hierarchy [member] | Derivative liabilities [member]
Statement Line Items [Line Items]
Amortized cost, liabilities	0	0
FVOCI, liabilities	0	0
FVTPL, liabilities	0	0
Level 1 of fair value hierarchy [member] | Other financial liabilities [member]
Statement Line Items [Line Items]
Amortized cost, liabilities	0	0
FVOCI, liabilities	0	0
FVTPL, liabilities	0	0
Level 2 of fair value hierarchy [member] | Deposits from banks [member]
Statement Line Items [Line Items]
Amortized cost, liabilities	0	0
FVOCI, liabilities	0	0
FVTPL, liabilities	0	0
Level 2 of fair value hierarchy [member] | Subordinated notes [member]
Statement Line Items [Line Items]
Amortized cost, liabilities	99,878	99,152
FVOCI, liabilities	0	0
FVTPL, liabilities	0	0
Level 2 of fair value hierarchy [member] | Derivative liabilities [member]
Statement Line Items [Line Items]
Amortized cost, liabilities	0	0
FVOCI, liabilities	0	0
FVTPL, liabilities	416	0
Level 2 of fair value hierarchy [member] | Other financial liabilities [member]
Statement Line Items [Line Items]
Amortized cost, liabilities	0	0
FVOCI, liabilities	0	0
FVTPL, liabilities	0	0
Level 3 of fair value hierarchy [member] | Deposits from banks [member]
Statement Line Items [Line Items]
Amortized cost, liabilities	4,918,431	4,182,338
FVOCI, liabilities	0	0
FVTPL, liabilities	0	0
Level 3 of fair value hierarchy [member] | Subordinated notes [member]
Statement Line Items [Line Items]
Amortized cost, liabilities	0	0
FVOCI, liabilities	0	0
FVTPL, liabilities	0	0
Level 3 of fair value hierarchy [member] | Derivative liabilities [member]
Statement Line Items [Line Items]
Amortized cost, liabilities	0	0
FVOCI, liabilities	0	0
FVTPL, liabilities	0	0
Level 3 of fair value hierarchy [member] | Other financial liabilities [member]
Statement Line Items [Line Items]
Amortized cost, liabilities	310,874	191,071
FVOCI, liabilities	0	0
FVTPL, liabilities	0	0
Cash and cash equivalents [member]
Statement Line Items [Line Items]
Amortized cost, assets	0	0
FVOCI, assets	0	0
FVTPL, assets	581,710	225,254
Amortized cost, assets	0	0
Cash and cash equivalents [member] | At fair value [member]
Statement Line Items [Line Items]
Amortized cost, assets	0	0
FVOCI, assets	0	0
FVTPL, assets	581,710	225,254
Amortized cost, assets	0	0
Cash and cash equivalents [member] | Level 1 of fair value hierarchy [member]
Statement Line Items [Line Items]
Amortized cost, assets	0	0
FVOCI, assets	0	0
FVTPL, assets	581,710	225,254
Amortized cost, assets	0	0
Cash and cash equivalents [member] | Level 2 of fair value hierarchy [member]
Statement Line Items [Line Items]
Amortized cost, assets	0	0
FVOCI, assets	0	0
FVTPL, assets	0	0
Amortized cost, assets	0	0
Cash and cash equivalents [member] | Level 3 of fair value hierarchy [member]
Statement Line Items [Line Items]
Amortized cost, assets	0	0
FVOCI, assets	0	0
FVTPL, assets	0	0
Amortized cost, assets	0	0
Securities [member]
Statement Line Items [Line Items]
Amortized cost, assets	0	0
FVOCI, assets	80,923	299,300
FVTPL, assets	0	0
Amortized cost, assets	0	0
Securities [member] | At fair value [member]
Statement Line Items [Line Items]
Amortized cost, assets	0	0
FVOCI, assets	80,923	299,300
FVTPL, assets	0	0
Amortized cost, assets	0	0
Securities [member] | Level 1 of fair value hierarchy [member]
Statement Line Items [Line Items]
Amortized cost, assets	0	0
FVOCI, assets	80,923	299,300
FVTPL, assets	0	0
Amortized cost, assets	0	0
Securities [member] | Level 2 of fair value hierarchy [member]
Statement Line Items [Line Items]
Amortized cost, assets	0	0
FVOCI, assets	0	0
FVTPL, assets	0	0
Amortized cost, assets	0	0
Securities [member] | Level 3 of fair value hierarchy [member]
Statement Line Items [Line Items]
Amortized cost, assets	0	0
FVOCI, assets	0	0
FVTPL, assets	0	0
Amortized cost, assets	0	0
Loans, net [member]
Statement Line Items [Line Items]
Amortized cost, assets	5,066,378	4,236,116
FVOCI, assets	0	0
FVTPL, assets	0	0
Amortized cost, assets	5,066,378	4,236,116
Loans, net [member] | At fair value [member]
Statement Line Items [Line Items]
Amortized cost, assets	5,050,931	4,190,523
FVOCI, assets	0	0
FVTPL, assets	0	0
Amortized cost, assets	5,050,931	4,190,523
Loans, net [member] | Level 1 of fair value hierarchy [member]
Statement Line Items [Line Items]
Amortized cost, assets	0	0
FVOCI, assets	0	0
FVTPL, assets	0	0
Amortized cost, assets	0	0
Loans, net [member] | Level 2 of fair value hierarchy [member]
Statement Line Items [Line Items]
Amortized cost, assets	0	0
FVOCI, assets	0	0
FVTPL, assets	0	0
Amortized cost, assets	0	0
Loans, net [member] | Level 3 of fair value hierarchy [member]
Statement Line Items [Line Items]
Amortized cost, assets	5,050,931	4,190,523
FVOCI, assets	0	0
FVTPL, assets	0	0
Amortized cost, assets	5,050,931	4,190,523
Derivatives [member]
Statement Line Items [Line Items]
Amortized cost, assets	0	0
FVOCI, assets	0	0
FVTPL, assets	0	20
Amortized cost, assets	0	0
Derivatives [member] | At fair value [member]
Statement Line Items [Line Items]
Amortized cost, assets	0	0
FVOCI, assets	0	0
FVTPL, assets	0	20
Amortized cost, assets	0	0
Derivatives [member] | Level 1 of fair value hierarchy [member]
Statement Line Items [Line Items]
Amortized cost, assets	0	0
FVOCI, assets	0	0
FVTPL, assets	0	0
Amortized cost, assets	0	0
Derivatives [member] | Level 2 of fair value hierarchy [member]
Statement Line Items [Line Items]
Amortized cost, assets	0	0
FVOCI, assets	0	0
FVTPL, assets	0	20
Amortized cost, assets	0	0
Derivatives [member] | Level 3 of fair value hierarchy [member]
Statement Line Items [Line Items]
Amortized cost, assets	0	0
FVOCI, assets	0	0
FVTPL, assets	0	0
Amortized cost, assets	0	0
Other financial assets [member]
Statement Line Items [Line Items]
Amortized cost, assets	0	0
FVOCI, assets	953	953
FVTPL, assets	0	0
Amortized cost, assets	0	0
Other financial assets [member] | At fair value [member]
Statement Line Items [Line Items]
Amortized cost, assets	0	0
FVOCI, assets	953	953
FVTPL, assets	0	0
Amortized cost, assets	0	0
Other financial assets [member] | Level 1 of fair value hierarchy [member]
Statement Line Items [Line Items]
Amortized cost, assets	0	0
FVOCI, assets	0	0
FVTPL, assets	0	0
Amortized cost, assets	0	0
Other financial assets [member] | Level 2 of fair value hierarchy [member]
Statement Line Items [Line Items]
Amortized cost, assets	0	0
FVOCI, assets	0	0
FVTPL, assets	0	0
Amortized cost, assets	0	0
Other financial assets [member] | Level 3 of fair value hierarchy [member]
Statement Line Items [Line Items]
Amortized cost, assets	0	0
FVOCI, assets	953	953
FVTPL, assets	0	0
Amortized cost, assets	$ 0	$ 0