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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

X

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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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