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Note 4 - Loans Receivable and Allowance for Credit Losses on Loans - Schedule of Past Due Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | $ 2,533,821 | $ 2,433,015
Financing Receivable, Nonaccrual | [1] | 13,601 | 10,952
Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 1,613,708 | 1,530,381
Financing Receivable, Nonaccrual | [1] | 8,175 | 6,056
Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 345,317 | 366,328
Financing Receivable, Nonaccrual |  | 2,771 | 1,088
Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 330,700 | 303,054
Financing Receivable, Nonaccrual | [1] | 4,979 | 4,699
Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 75,147 | 69,488
Financing Receivable, Nonaccrual | [1] | 261 | 173
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 617,322 | 567,742
Financing Receivable, Nonaccrual | [1] | 164 | 96
Real Estate Portfolio Segment [Member] | Multifamily [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 245,222 | 223,769
Financing Receivable, Nonaccrual | [1] | 0 | 0
Consumer Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 620,181 | 646,753
Financing Receivable, Nonaccrual | [1] | 1,980 | 2,213
Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 541,946 | 569,903
Financing Receivable, Nonaccrual | [1] | 1,677 | 1,863
Consumer Portfolio Segment [Member] | Marine Loans [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 74,931 | 73,310
Financing Receivable, Nonaccrual | [1] | 289 | 342
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 3,304 | 3,540
Financing Receivable, Nonaccrual | [1] | 14 | 8
Commercial Business Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 299,932 | 255,881
Financing Receivable, Nonaccrual | [1] | 3,446 | 2,683
Commercial Business Portfolio Segment [Member] | Commercial And Industrial [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 287,014 | 238,301
Financing Receivable, Nonaccrual | [1] | 3,446 | 2,683
Commercial Business Portfolio Segment [Member] | Warehouse Lending Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 12,918 | 17,580
Financing Receivable, Nonaccrual | [1] | 0 | 0
Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 8,967 | 2,268
Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 4,194 | 79
Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 845 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 822 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 20 | 79
Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 2,507 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Multifamily [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 4,655 | 2,189
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 3,920 | 1,759
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Marine Loans [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 718 | 373
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 17 | 57
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 118 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] | Commercial And Industrial [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 118 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] | Warehouse Lending Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 2,191 | 1,630
Financial Asset, 60 to 89 Days Past Due [Member] | Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 253 | 121
Financial Asset, 60 to 89 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 25
Financial Asset, 60 to 89 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 253 | 96
Financial Asset, 60 to 89 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Multifamily [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 1,938 | 1,509
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 1,787 | 1,248
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Marine Loans [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 150 | 243
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 1 | 18
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] | Commercial And Industrial [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] | Warehouse Lending Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 11,073 | 3,570
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 6,931 | 136
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 1,625 | 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 4,979 | 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 251 | 136
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 76 | 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Multifamily [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 811 | 920
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 758 | 777
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Marine Loans [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 40 | 137
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 13 | 6
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 3,331 | 2,514
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] | Commercial And Industrial [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 3,331 | 2,514
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] | Warehouse Lending Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, Past Due [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 22,231 | 7,468
Financial Asset, Past Due [Member] | Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 11,378 | 336
Financial Asset, Past Due [Member] | Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 2,470 | 0
Financial Asset, Past Due [Member] | Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 5,801 | 0
Financial Asset, Past Due [Member] | Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 271 | 240
Financial Asset, Past Due [Member] | Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 2,836 | 96
Financial Asset, Past Due [Member] | Real Estate Portfolio Segment [Member] | Multifamily [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, Past Due [Member] | Consumer Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 7,404 | 4,618
Financial Asset, Past Due [Member] | Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 6,465 | 3,784
Financial Asset, Past Due [Member] | Consumer Portfolio Segment [Member] | Marine Loans [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 908 | 753
Financial Asset, Past Due [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 31 | 81
Financial Asset, Past Due [Member] | Commercial Business Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 3,449 | 2,514
Financial Asset, Past Due [Member] | Commercial Business Portfolio Segment [Member] | Commercial And Industrial [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 3,449 | 2,514
Financial Asset, Past Due [Member] | Commercial Business Portfolio Segment [Member] | Warehouse Lending Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, Not Past Due [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 2,511,590 | 2,425,547
Financial Asset, Not Past Due [Member] | Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 1,602,330 | 1,530,045
Financial Asset, Not Past Due [Member] | Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 342,847 | 366,328
Financial Asset, Not Past Due [Member] | Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 324,899 | 303,054
Financial Asset, Not Past Due [Member] | Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 74,876 | 69,248
Financial Asset, Not Past Due [Member] | Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 614,486 | 567,646
Financial Asset, Not Past Due [Member] | Real Estate Portfolio Segment [Member] | Multifamily [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 245,222 | 223,769
Financial Asset, Not Past Due [Member] | Consumer Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 612,777 | 642,135
Financial Asset, Not Past Due [Member] | Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 535,481 | 566,119
Financial Asset, Not Past Due [Member] | Consumer Portfolio Segment [Member] | Marine Loans [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 74,023 | 72,557
Financial Asset, Not Past Due [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 3,273 | 3,459
Financial Asset, Not Past Due [Member] | Commercial Business Portfolio Segment [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 296,483 | 253,367
Financial Asset, Not Past Due [Member] | Commercial Business Portfolio Segment [Member] | Commercial And Industrial [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | 283,565 | 235,787
Financial Asset, Not Past Due [Member] | Commercial Business Portfolio Segment [Member] | Warehouse Lending Loan [Member] |  |  |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  | $ 12,918 | $ 17,580
[1] | Includes loans less than 90 days past due as applicable.

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