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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, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Financing Receivable, before Allowance for Credit Loss |  | $ 2,433,015 | $ 2,218,852 | $ 1,754,175
Financing Receivable, Nonaccrual | [1] | 10,952 | 8,652 |
Financial Asset, 30 to 59 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 2,268 | 3,010 |
Financial Asset, 60 to 89 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 1,630 | 1,211 |
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 3,570 | 3,719 |
Financial Asset, Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 7,468 | 7,940 |
Financial Asset, Not Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 2,425,547 | 2,210,912 |
Real Estate Portfolio Segment [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 1,530,381 | 1,421,260 | 1,090,303
Financing Receivable, Nonaccrual | [1] | 6,056 | 966 |
Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 79 | 29 |
Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 121 | 104 |
Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 136 | 479 |
Real Estate Portfolio Segment [Member] | Financial Asset, Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 336 | 612 |
Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 1,530,045 | 1,420,648 |
Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 366,328 | 334,059 |
Financing Receivable, Nonaccrual | [1] | 1,088 | 0 |
Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0 |
Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0 |
Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0 |
Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] | Financial Asset, Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0 |
Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] | Financial Asset, Not Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 366,328 | 334,059 |
Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 303,054 | 342,591 |
Financing Receivable, Nonaccrual | [1] | 4,699 | 0 |
Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0 |
Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0 |
Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0 |
Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Financial Asset, Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0 |
Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Financial Asset, Not Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 303,054 | 342,591 |
Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 69,488 | 55,387 |
Financing Receivable, Nonaccrual | [1] | 173 | 46 |
Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 79 | 29 |
Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 25 | 104 |
Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 136 | 16 |
Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] | Financial Asset, Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 240 | 149 |
Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] | Financial Asset, Not Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 69,248 | 55,238 |
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 567,742 | 469,485 |
Financing Receivable, Nonaccrual | [1] | 96 | 920 |
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0 |
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 96 | 0 |
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 463 |
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] | Financial Asset, Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 96 | 463 |
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] | Financial Asset, Not Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 567,646 | 469,022 |
Real Estate Portfolio Segment [Member] | Multifamily [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 223,769 | 219,738 |
Financing Receivable, Nonaccrual | [1] | 0 | 0 |
Real Estate Portfolio Segment [Member] | Multifamily [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0 |
Real Estate Portfolio Segment [Member] | Multifamily [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0 |
Real Estate Portfolio Segment [Member] | Multifamily [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0 |
Real Estate Portfolio Segment [Member] | Multifamily [Member] | Financial Asset, Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0 |
Real Estate Portfolio Segment [Member] | Multifamily [Member] | Financial Asset, Not Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 223,769 | 219,738 |
Consumer Portfolio Segment [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 646,753 | 569,572 | 422,043
Financing Receivable, Nonaccrual | [1] | 2,213 | 1,352 |
Consumer Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 2,189 | 2,980 |
Consumer Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 1,509 | 1,107 |
Consumer Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 920 | 623 |
Consumer Portfolio Segment [Member] | Financial Asset, Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 4,618 | 4,710 |
Consumer Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 642,135 | 564,862 |
Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 569,903 | 495,941 |
Financing Receivable, Nonaccrual | [1] | 1,863 | 1,076 |
Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 1,759 | 2,298 |
Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 1,248 | 685 |
Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 777 | 532 |
Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] | Financial Asset, Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 3,784 | 3,515 |
Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] | Financial Asset, Not Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 566,119 | 492,426 |
Consumer Portfolio Segment [Member] | Marine Loans [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 73,310 | 70,567 |
Financing Receivable, Nonaccrual | [1] | 342 | 267 |
Consumer Portfolio Segment [Member] | Marine Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 373 | 650 |
Consumer Portfolio Segment [Member] | Marine Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 243 | 385 |
Consumer Portfolio Segment [Member] | Marine Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 137 | 86 |
Consumer Portfolio Segment [Member] | Marine Loans [Member] | Financial Asset, Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 753 | 1,121 |
Consumer Portfolio Segment [Member] | Marine Loans [Member] | Financial Asset, Not Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 72,557 | 69,446 |
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 3,540 | 3,064 |
Financing Receivable, Nonaccrual | [1] | 8 | 9 |
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 57 | 32 |
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 18 | 37 |
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 6 | 5 |
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member] | Financial Asset, Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 81 | 74 |
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member] | Financial Asset, Not Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 3,459 | 2,990 |
Commercial Business Portfolio Segment [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 255,881 | 228,020 | $ 241,829
Financing Receivable, Nonaccrual | [1] | 2,683 | 6,334 |
Commercial Business Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 1 |
Commercial Business Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0 |
Commercial Business Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 2,514 | 2,617 |
Commercial Business Portfolio Segment [Member] | Financial Asset, Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 2,514 | 2,618 |
Commercial Business Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 253,367 | 225,402 |
Commercial Business Portfolio Segment [Member] | Commercial Loan [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 238,301 | 196,791 |
Financing Receivable, Nonaccrual | [1] | 2,683 | 6,334 |
Commercial Business Portfolio Segment [Member] | Commercial Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 1 |
Commercial Business Portfolio Segment [Member] | Commercial Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0 |
Commercial Business Portfolio Segment [Member] | Commercial Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 2,514 | 2,617 |
Commercial Business Portfolio Segment [Member] | Commercial Loan [Member] | Financial Asset, Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 2,514 | 2,618 |
Commercial Business Portfolio Segment [Member] | Commercial Loan [Member] | Financial Asset, Not Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 235,787 | 194,173 |
Commercial Business Portfolio Segment [Member] | Warehouse Lending Loan [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 17,580 | 31,229 |
Financing Receivable, Nonaccrual | [1] | 0 | 0 |
Commercial Business Portfolio Segment [Member] | Warehouse Lending Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |  |  |
Financing Receivable, 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, before Allowance for Credit Loss |  | 0 | 0 |
Commercial Business Portfolio Segment [Member] | Warehouse Lending Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0 |
Commercial Business Portfolio Segment [Member] | Warehouse Lending Loan [Member] | Financial Asset, Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | 0 | 0 |
Commercial Business Portfolio Segment [Member] | Warehouse Lending Loan [Member] | Financial Asset, Not Past Due [Member] |  |  |  |
Financing Receivable, before Allowance for Credit Loss |  | $ 17,580 | $ 31,229 |
[1] | Includes past due loans as applicable.

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