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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, 2024	Dec. 31, 2023
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		$ 2,533,821	$ 2,433,015
Financing Receivable, Nonaccrual	[1]	13,601	10,952
Real Estate Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		1,613,708	1,530,381
Financing Receivable, Nonaccrual	[1]	8,175	6,056
Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		345,317	366,328
Financing Receivable, Nonaccrual		2,771	1,088
Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		330,700	303,054
Financing Receivable, Nonaccrual	[1]	4,979	4,699
Real Estate Portfolio Segment [Member] | Home Equity Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		75,147	69,488
Financing Receivable, Nonaccrual	[1]	261	173
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		617,322	567,742
Financing Receivable, Nonaccrual	[1]	164	96
Real Estate Portfolio Segment [Member] | Multifamily [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		245,222	223,769
Financing Receivable, Nonaccrual	[1]	0	0
Consumer Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		620,181	646,753
Financing Receivable, Nonaccrual	[1]	1,980	2,213
Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		541,946	569,903
Financing Receivable, Nonaccrual	[1]	1,677	1,863
Consumer Portfolio Segment [Member] | Marine Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		74,931	73,310
Financing Receivable, Nonaccrual	[1]	289	342
Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		3,304	3,540
Financing Receivable, Nonaccrual	[1]	14	8
Commercial Business Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		299,932	255,881
Financing Receivable, Nonaccrual	[1]	3,446	2,683
Commercial Business Portfolio Segment [Member] | Commercial And Industrial [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		287,014	238,301
Financing Receivable, Nonaccrual	[1]	3,446	2,683
Commercial Business Portfolio Segment [Member] | Warehouse Lending Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		12,918	17,580
Financing Receivable, Nonaccrual	[1]	0	0
Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		8,967	2,268
Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		4,194	79
Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		845	0
Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		822	0
Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Home Equity Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		20	79
Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		2,507	0
Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Multifamily [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		0	0
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		4,655	2,189
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		3,920	1,759
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Marine Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		718	373
Financial Asset, 30 to 59 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		17	57
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Business Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		118	0
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] | Commercial And Industrial [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		118	0
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] | Warehouse Lending Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		0	0
Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		2,191	1,630
Financial Asset, 60 to 89 Days Past Due [Member] | Real Estate Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		253	121
Financial Asset, 60 to 89 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member]
Financing Receivable, Excluding Accrued Interest, 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, Excluding Accrued Interest, 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, Excluding Accrued Interest, before Allowance for Credit Loss		0	25
Financial Asset, 60 to 89 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		253	96
Financial Asset, 60 to 89 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Multifamily [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		1,938	1,509
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		1,787	1,248
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Marine Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		150	243
Financial Asset, 60 to 89 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		1	18
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Business Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		0	0
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] | Commercial And Industrial [Member]
Financing Receivable, Excluding Accrued Interest, 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, Excluding Accrued Interest, before Allowance for Credit Loss		0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		11,073	3,570
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Real Estate Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		6,931	136
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		1,625	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		4,979	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Home Equity Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		251	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, Excluding Accrued Interest, before Allowance for Credit Loss		76	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Real Estate Portfolio Segment [Member] | Multifamily [Member]
Financing Receivable, Excluding Accrued Interest, 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, Excluding Accrued Interest, before Allowance for Credit Loss		811	920
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		758	777
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Marine Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		40	137
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		13	6
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Business Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		3,331	2,514
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Business Portfolio Segment [Member] | Commercial And Industrial [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		3,331	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, Excluding Accrued Interest, before Allowance for Credit Loss		0	0
Financial Asset, Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		22,231	7,468
Financial Asset, Past Due [Member] | Real Estate Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		11,378	336
Financial Asset, Past Due [Member] | Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		2,470	0
Financial Asset, Past Due [Member] | Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		5,801	0
Financial Asset, Past Due [Member] | Real Estate Portfolio Segment [Member] | Home Equity Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		271	240
Financial Asset, Past Due [Member] | Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		2,836	96
Financial Asset, Past Due [Member] | Real Estate Portfolio Segment [Member] | Multifamily [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		0	0
Financial Asset, Past Due [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		7,404	4,618
Financial Asset, Past Due [Member] | Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		6,465	3,784
Financial Asset, Past Due [Member] | Consumer Portfolio Segment [Member] | Marine Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		908	753
Financial Asset, Past Due [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		31	81
Financial Asset, Past Due [Member] | Commercial Business Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		3,449	2,514
Financial Asset, Past Due [Member] | Commercial Business Portfolio Segment [Member] | Commercial And Industrial [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		3,449	2,514
Financial Asset, Past Due [Member] | Commercial Business Portfolio Segment [Member] | Warehouse Lending Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		0	0
Financial Asset, Not Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		2,511,590	2,425,547
Financial Asset, Not Past Due [Member] | Real Estate Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		1,602,330	1,530,045
Financial Asset, Not Past Due [Member] | Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		342,847	366,328
Financial Asset, Not Past Due [Member] | Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		324,899	303,054
Financial Asset, Not Past Due [Member] | Real Estate Portfolio Segment [Member] | Home Equity Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		74,876	69,248
Financial Asset, Not Past Due [Member] | Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		614,486	567,646
Financial Asset, Not Past Due [Member] | Real Estate Portfolio Segment [Member] | Multifamily [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		245,222	223,769
Financial Asset, Not Past Due [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		612,777	642,135
Financial Asset, Not Past Due [Member] | Consumer Portfolio Segment [Member] | Indirect Home Improvement Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		535,481	566,119
Financial Asset, Not Past Due [Member] | Consumer Portfolio Segment [Member] | Marine Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		74,023	72,557
Financial Asset, Not Past Due [Member] | Consumer Portfolio Segment [Member] | Other Consumer Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		3,273	3,459
Financial Asset, Not Past Due [Member] | Commercial Business Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		296,483	253,367
Financial Asset, Not Past Due [Member] | Commercial Business Portfolio Segment [Member] | Commercial And Industrial [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		283,565	235,787
Financial Asset, Not Past Due [Member] | Commercial Business Portfolio Segment [Member] | Warehouse Lending Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		$ 12,918	$ 17,580
[1] Includes loans less than 90 days past due as applicable.

X

- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-5

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- Definition

Amortized cost excluding accrued interest, of financing receivable on nonaccrual status. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-16

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