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Note 4 - Loans Receivable and Allowance for Credit Losses on Loans - Schedule of Past Due Loans (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, before Allowance for Credit Loss |  | $ 2,446,858 | $ 2,433,015
Financing Receivable, Nonaccrual | [1] | 12,106 | 10,952
Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 1,536,184 | 1,530,381
Financing Receivable, Nonaccrual | [1] | 6,182 | 6,056
Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 359,055 | 366,328
Financing Receivable, Nonaccrual |  | 1,102 | 1,088
Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 301,346 | 303,054
Financing Receivable, Nonaccrual | [1] | 4,737 | 4,699
Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 73,323 | 69,488
Financing Receivable, Nonaccrual | [1] | 170 | 173
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 580,050 | 567,742
Financing Receivable, Nonaccrual | [1] | 173 | 96
Real Estate Portfolio Segment [Member] | Multifamily [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 222,410 | 223,769
Financing Receivable, Nonaccrual | [1] | 0 | 0
Consumer Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 646,132 | 646,753
Financing Receivable, Nonaccrual | [1] | 2,583 | 2,213
Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 568,802 | 569,903
Financing Receivable, Nonaccrual | [1] | 2,195 | 1,863
Consumer Portfolio Segment [Member] | Marine Loans [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 73,921 | 73,310
Financing Receivable, Nonaccrual | [1] | 385 | 342
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 3,409 | 3,540
Financing Receivable, Nonaccrual | [1] | 3 | 8
Commercial Business Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 264,542 | 255,881
Financing Receivable, Nonaccrual | [1] | 3,341 | 2,683
Commercial Business Portfolio Segment [Member] | Commercial Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 256,429 | 238,301
Financing Receivable, Nonaccrual | [1] | 3,341 | 2,683
Commercial Business Portfolio Segment [Member] | Warehouse Lending Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 8,113 | 17,580
Financing Receivable, Nonaccrual | [1] | 0 | 0
Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 6,894 | 2,268
Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 4,753 | 79
Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 4,737 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 16 | 79
Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Multifamily [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 1,974 | 2,189
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 1,657 | 1,759
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Marine Loans [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 295 | 373
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 22 | 57
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 167 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] | Commercial Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 167 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] | Warehouse Lending Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 831 | 1,630
Financial Asset, 60 to 89 Days Past Due [Member] | Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 26 | 121
Financial Asset, 60 to 89 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] |  |  |
Financing Receivable, 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, 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, before Allowance for Credit Loss |  | 26 | 25
Financial Asset, 60 to 89 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 96
Financial Asset, 60 to 89 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Multifamily [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 805 | 1,509
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 717 | 1,248
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Marine Loans [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 86 | 243
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 2 | 18
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] | Commercial Loan [Member] |  |  |
Financing Receivable, 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, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 3,211 | 3,570
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 217 | 136
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 137 | 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, before Allowance for Credit Loss |  | 80 | 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Multifamily [Member] |  |  |
Financing Receivable, 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, before Allowance for Credit Loss |  | 737 | 920
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 651 | 777
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Marine Loans [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 85 | 137
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 1 | 6
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 2,257 | 2,514
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] | Commercial Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 2,257 | 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, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, Past Due [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 10,936 | 7,468
Financial Asset, Past Due [Member] | Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 4,996 | 336
Financial Asset, Past Due [Member] | Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, Past Due [Member] | Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 4,737 | 0
Financial Asset, Past Due [Member] | Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 179 | 240
Financial Asset, Past Due [Member] | Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 80 | 96
Financial Asset, Past Due [Member] | Real Estate Portfolio Segment [Member] | Multifamily [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, Past Due [Member] | Consumer Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 3,516 | 4,618
Financial Asset, Past Due [Member] | Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 3,025 | 3,784
Financial Asset, Past Due [Member] | Consumer Portfolio Segment [Member] | Marine Loans [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 466 | 753
Financial Asset, Past Due [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 25 | 81
Financial Asset, Past Due [Member] | Commercial Business Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 2,424 | 2,514
Financial Asset, Past Due [Member] | Commercial Business Portfolio Segment [Member] | Commercial Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 2,424 | 2,514
Financial Asset, Past Due [Member] | Commercial Business Portfolio Segment [Member] | Warehouse Lending Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0
Financial Asset, Not Past Due [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 2,435,922 | 2,425,547
Financial Asset, Not Past Due [Member] | Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 1,531,188 | 1,530,045
Financial Asset, Not Past Due [Member] | Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 359,055 | 366,328
Financial Asset, Not Past Due [Member] | Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 296,609 | 303,054
Financial Asset, Not Past Due [Member] | Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 73,144 | 69,248
Financial Asset, Not Past Due [Member] | Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 579,970 | 567,646
Financial Asset, Not Past Due [Member] | Real Estate Portfolio Segment [Member] | Multifamily [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 222,410 | 223,769
Financial Asset, Not Past Due [Member] | Consumer Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 642,616 | 642,135
Financial Asset, Not Past Due [Member] | Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 565,777 | 566,119
Financial Asset, Not Past Due [Member] | Consumer Portfolio Segment [Member] | Marine Loans [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 73,455 | 72,557
Financial Asset, Not Past Due [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 3,384 | 3,459
Financial Asset, Not Past Due [Member] | Commercial Business Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 262,118 | 253,367
Financial Asset, Not Past Due [Member] | Commercial Business Portfolio Segment [Member] | Commercial Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 254,005 | 235,787
Financial Asset, Not Past Due [Member] | Commercial Business Portfolio Segment [Member] | Warehouse Lending Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss |  | $ 8,113 | $ 17,580
[1] | Includes past due loans as applicable.

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