Note 3 - Loans Receivable - Past Due Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Loan receivable, gross	$ 1,628,112	$ 1,695,823
Financial Asset, 30 to 59 Days Past Due [Member]
Loan receivable, gross	7,887	4,860
Financial Asset, 60 to 89 Days Past Due [Member]
Loan receivable, gross	4,502	8,908
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loan receivable, gross	7,054	19,121
Financial Asset, Past Due [Member]
Loan receivable, gross	19,443	32,889
Financial Asset, Not Past Due [Member]
Loan receivable, gross	1,608,669	1,662,934
Real Estate Portfolio Segment [Member]
Loan receivable, gross	1,129,211	1,196,400
Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loan receivable, gross	4,303	1,226
Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loan receivable, gross	1,288	8,471
Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loan receivable, gross	5,669	17,817
Real Estate Portfolio Segment [Member] | Financial Asset, Past Due [Member]
Loan receivable, gross	11,260	27,514
Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loan receivable, gross	1,117,951	1,168,886
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member]
Loan receivable, gross	376,731	395,315
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loan receivable, gross	867	333
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loan receivable, gross	1,288	321
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loan receivable, gross	523	839
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] | Financial Asset, Past Due [Member]
Loan receivable, gross	2,678	1,493
Real Estate Portfolio Segment [Member] | One-to-four Family Loan [Member] | Financial Asset, Not Past Due [Member]
Loan receivable, gross	374,053	393,822
Real Estate Portfolio Segment [Member] | Multi-family Loan [Member]
Loan receivable, gross	288,529	332,596
Real Estate Portfolio Segment [Member] | Multi-family Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loan receivable, gross	0	876
Real Estate Portfolio Segment [Member] | Multi-family Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loan receivable, gross	0	0
Real Estate Portfolio Segment [Member] | Multi-family Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loan receivable, gross	0	0
Real Estate Portfolio Segment [Member] | Multi-family Loan [Member] | Financial Asset, Past Due [Member]
Loan receivable, gross	0	876
Real Estate Portfolio Segment [Member] | Multi-family Loan [Member] | Financial Asset, Not Past Due [Member]
Loan receivable, gross	288,529	331,720
Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member]
Loan receivable, gross	402,683	390,379
Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loan receivable, gross	3,435	0
Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loan receivable, gross	0	0
Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loan receivable, gross	0	5,594
Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] | Financial Asset, Past Due [Member]
Loan receivable, gross	3,435	5,594
Real Estate Portfolio Segment [Member] | Commercial Real Estate [Member] | Financial Asset, Not Past Due [Member]
Loan receivable, gross	399,248	384,785
Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Loan receivable, gross	61,268	78,110
Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loan receivable, gross	1	17
Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loan receivable, gross	0	8,150
Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loan receivable, gross	5,146	11,384
Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Financial Asset, Past Due [Member]
Loan receivable, gross	5,147	19,551
Real Estate Portfolio Segment [Member] | Construction Loans [Member] | Financial Asset, Not Past Due [Member]
Loan receivable, gross	56,121	58,559
Consumer Portfolio Segment [Member]
Loan receivable, gross	368,590	347,930
Consumer Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loan receivable, gross	3,565	2,958
Consumer Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loan receivable, gross	528	437
Consumer Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loan receivable, gross	1,115	700
Consumer Portfolio Segment [Member] | Financial Asset, Past Due [Member]
Loan receivable, gross	5,208	4,095
Consumer Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loan receivable, gross	363,382	343,835
Consumer Portfolio Segment [Member] | Home Equity Loan [Member]
Loan receivable, gross	85,088	79,054
Consumer Portfolio Segment [Member] | Home Equity Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loan receivable, gross	0	53
Consumer Portfolio Segment [Member] | Home Equity Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loan receivable, gross	0	0
Consumer Portfolio Segment [Member] | Home Equity Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loan receivable, gross	53	0
Consumer Portfolio Segment [Member] | Home Equity Loan [Member] | Financial Asset, Past Due [Member]
Loan receivable, gross	53	53
Consumer Portfolio Segment [Member] | Home Equity Loan [Member] | Financial Asset, Not Past Due [Member]
Loan receivable, gross	85,035	79,001
Consumer Portfolio Segment [Member] | Automobile and Other Loan [Member]
Loan receivable, gross	283,502	268,876
Consumer Portfolio Segment [Member] | Automobile and Other Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loan receivable, gross	3,565	2,905
Consumer Portfolio Segment [Member] | Automobile and Other Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loan receivable, gross	528	437
Consumer Portfolio Segment [Member] | Automobile and Other Loan [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loan receivable, gross	1,062	700
Consumer Portfolio Segment [Member] | Automobile and Other Loan [Member] | Financial Asset, Past Due [Member]
Loan receivable, gross	5,155	4,042
Consumer Portfolio Segment [Member] | Automobile and Other Loan [Member] | Financial Asset, Not Past Due [Member]
Loan receivable, gross	278,347	264,834
Commercial Portfolio Segment [Member]
Loan receivable, gross	130,311	151,493
Commercial Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Loan receivable, gross	19	676
Commercial Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Loan receivable, gross	2,686	0
Commercial Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loan receivable, gross	270	604
Commercial Portfolio Segment [Member] | Financial Asset, Past Due [Member]
Loan receivable, gross	2,975	1,280
Commercial Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Loan receivable, gross	$ 127,336	$ 150,213