Note 3 - Loans Receivable and Allowance for Credit Losses - Loans - Schedule of Past Due Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	$ 2,660,157	$ 2,655,109
Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	2,232	2,542
Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	2,643,567	2,632,884
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	15,647	18,745
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	1,004,990	969,471
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	997,082	958,804
Commercial Real Estate Portfolio Segment [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	7,778	11,285
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	184,136	176,078
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	183,522	174,647
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	614	2,049
Commercial Real Estate Portfolio Segment [Member] \| Non-owner Occupied [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	188,258	177,113
Commercial Real Estate Portfolio Segment [Member] \| Non-owner Occupied [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Commercial Real Estate Portfolio Segment [Member] \| Non-owner Occupied [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	188,258	177,113
Commercial Real Estate Portfolio Segment [Member] \| Non-owner Occupied [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Commercial Real Estate Portfolio Segment [Member] \| Commercial and Speculative Construction and Development [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	370,459	354,130
Commercial Real Estate Portfolio Segment [Member] \| Commercial and Speculative Construction and Development [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Commercial Real Estate Portfolio Segment [Member] \| Commercial and Speculative Construction and Development [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	363,295	344,894
Commercial Real Estate Portfolio Segment [Member] \| Commercial and Speculative Construction and Development [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	7,164	9,236
Commercial Real Estate Portfolio Segment [Member] \| Multifamily [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	262,137	262,150
Commercial Real Estate Portfolio Segment [Member] \| Multifamily [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Commercial Real Estate Portfolio Segment [Member] \| Multifamily [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	262,007	262,150
Commercial Real Estate Portfolio Segment [Member] \| Multifamily [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Residential Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	793,497	759,361
Residential Portfolio Segment [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	68	214
Residential Portfolio Segment [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	792,503	757,520
Residential Portfolio Segment [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	2,445	2,168
Residential Portfolio Segment [Member] \| One-to-four Family Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	660,518	628,761
Residential Portfolio Segment [Member] \| One-to-four Family Loan [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	68	214
Residential Portfolio Segment [Member] \| One-to-four Family Loan [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	659,678	627,219
Residential Portfolio Segment [Member] \| One-to-four Family Loan [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	1,973	1,778
Residential Portfolio Segment [Member] \| Home Equity Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	88,214	88,271
Residential Portfolio Segment [Member] \| Home Equity Loan [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Residential Portfolio Segment [Member] \| Home Equity Loan [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	88,060	87,972
Residential Portfolio Segment [Member] \| Home Equity Loan [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	472	390
Residential Portfolio Segment [Member] \| Residential Custom Construction [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	44,765	42,329
Residential Portfolio Segment [Member] \| Residential Custom Construction [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Residential Portfolio Segment [Member] \| Residential Custom Construction [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	44,765	42,329
Residential Portfolio Segment [Member] \| Residential Custom Construction [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Consumer Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	573,203	596,986
Consumer Portfolio Segment [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	2,164	2,328
Consumer Portfolio Segment [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	565,516	587,971
Consumer Portfolio Segment [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	5,424	4,712
Consumer Portfolio Segment [Member] \| Indirect Home Improvement Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	502,151	525,842
Consumer Portfolio Segment [Member] \| Indirect Home Improvement Loan [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	2,068	2,292
Consumer Portfolio Segment [Member] \| Indirect Home Improvement Loan [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	495,585	517,241
Consumer Portfolio Segment [Member] \| Indirect Home Improvement Loan [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	4,799	4,256
Consumer Portfolio Segment [Member] \| Marine Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	66,941	68,115
Consumer Portfolio Segment [Member] \| Marine Loans [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	96	9
Consumer Portfolio Segment [Member] \| Marine Loans [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	65,841	67,783
Consumer Portfolio Segment [Member] \| Marine Loans [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	606	454
Consumer Portfolio Segment [Member] \| Other Consumer Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	4,111	3,029
Consumer Portfolio Segment [Member] \| Other Consumer Loan [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	27
Consumer Portfolio Segment [Member] \| Other Consumer Loan [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	4,090	2,947
Consumer Portfolio Segment [Member] \| Other Consumer Loan [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	19	2
Commercial Business Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	288,467	329,291
Commercial Business Portfolio Segment [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Commercial Business Portfolio Segment [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	288,466	328,589
Commercial Business Portfolio Segment [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	580
Commercial Business Portfolio Segment [Member] \| Commercial And Industrial [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	281,181	301,111
Commercial Business Portfolio Segment [Member] \| Commercial And Industrial [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Commercial Business Portfolio Segment [Member] \| Commercial And Industrial [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	281,180	300,409
Commercial Business Portfolio Segment [Member] \| Commercial And Industrial [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	580
Commercial Business Portfolio Segment [Member] \| Warehouse Lending Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	7,286	28,180
Commercial Business Portfolio Segment [Member] \| Warehouse Lending Loan [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Commercial Business Portfolio Segment [Member] \| Warehouse Lending Loan [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	7,286	28,180
Commercial Business Portfolio Segment [Member] \| Warehouse Lending Loan [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	$ 0	$ 0

Note 3 - Loans Receivable and Allowance for Credit Losses - Loans - Schedule of Past Due Loans (Details) - USD ($)
$ in Thousands

Jun. 30, 2026

Dec. 31, 2025

Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss

$ 2,660,157

$ 2,655,109

Financial Asset, 30 to 59 Days Past Due [Member]

Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss

2,232

2,542

Financial Asset, 60 to 89 Days Past Due [Member]

Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss