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Note 3 - Loans Receivable and Allowance for Credit Losses on Loans - Schedule of Portfolio Loan Composition (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Financing Receivable, Gross	$ 2,488,422	$ 2,433,015
ACL on loans	(31,238)	(31,534)
Total loans receivable, net	2,457,184	2,401,481
Real Estate Portfolio Segment [Member]
Financing Receivable, Gross	1,536,003	1,530,381
Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member]
Financing Receivable, Gross	359,404	366,328
Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable, Gross	274,209	303,054
Real Estate Portfolio Segment [Member] | Home Equity Loan [Member]
Financing Receivable, Gross	73,749	69,488
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member]
Financing Receivable, Gross	588,966	567,742
Real Estate Portfolio Segment [Member] | Multifamily [Member]
Financing Receivable, Gross	239,675	223,769
Consumer Portfolio Segment [Member]
Financing Receivable, Gross	641,688	646,753
Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member]
Financing Receivable, Gross	563,621	569,903
Consumer Portfolio Segment [Member] | Marine Loans [Member]
Financing Receivable, Gross	74,627	73,310
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Gross	3,440	3,540
Commercial Business Portfolio Segment [Member]
Financing Receivable, Gross	310,731	255,881
Commercial Business Portfolio Segment [Member] | Commercial And Industrial [Member]
Financing Receivable, Gross	285,183	238,301
Commercial Business Portfolio Segment [Member] | Warehouse Lending Loan [Member]
Financing Receivable, Gross	$ 25,548	$ 17,580

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Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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