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Note 4 - Loans Receivable and Allowance for Credit Losses on Loans - Schedule of Portfolio Loan Composition (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Financing Receivable, Gross | $ 2,433,015 | $ 2,218,852 | $ 1,754,175
ACL on loans | (31,534) | (27,992) |
Total loans receivable, net | 2,401,481 | 2,190,860 |
Real Estate Portfolio Segment [Member] |  |  |
Financing Receivable, Gross | 1,530,381 | 1,421,260 | 1,090,303
Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] |  |  |
Financing Receivable, Gross | 366,328 | 334,059 |
Real Estate Portfolio Segment [Member] | Construction Loans [Member] |  |  |
Financing Receivable, Gross | 303,054 | 342,591 |
Real Estate Portfolio Segment [Member] | Home Equity Loan [Member] |  |  |
Financing Receivable, Gross | 69,488 | 55,387 |
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] |  |  |
Financing Receivable, Gross | 567,742 | 469,485 |
Real Estate Portfolio Segment [Member] | Multifamily [Member] |  |  |
Financing Receivable, Gross | 223,769 | 219,738 |
Consumer Portfolio Segment [Member] |  |  |
Financing Receivable, Gross | 646,753 | 569,572 | 422,043
Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member] |  |  |
Financing Receivable, Gross | 569,903 | 495,941 |
Consumer Portfolio Segment [Member] | Marine Loans [Member] |  |  |
Financing Receivable, Gross | 73,310 | 70,567 |
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member] |  |  |
Financing Receivable, Gross | 3,540 | 3,064 |
Commercial Business Portfolio Segment [Member] |  |  |
Financing Receivable, Gross | 255,881 | 228,020 | $ 241,829
Commercial Business Portfolio Segment [Member] | Commercial And Industrial [Member] |  |  |
Financing Receivable, Gross | 238,301 | 196,791 |
Commercial Business Portfolio Segment [Member] | Warehouse Lending Loan [Member] |  |  |
Financing Receivable, Gross | $ 17,580 | $ 31,229 |

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