Note 3 - Loans Receivable - Collateral-dependent Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Loans receivable	$ 1,569,662	$ 1,520,646
Real Estate [Member]
Loans receivable	4,589	3,684
Business Assets [Member]
Loans receivable	7,039	692
Other [Member]
Loans receivable	141	108
Residential Portfolio Segment [Member]
Loans receivable	194,289	199,422
Residential Portfolio Segment [Member] \| One-to-Four Family Loans [Member]
Loans receivable	147,143	153,721
Residential Portfolio Segment [Member] \| One-to-Four Family Loans [Member] \| Real Estate [Member]
Loans receivable	658	967
Residential Portfolio Segment [Member] \| One-to-Four Family Loans [Member] \| Business Assets [Member]
Loans receivable	0	0
Residential Portfolio Segment [Member] \| One-to-Four Family Loans [Member] \| Other [Member]
Loans receivable	0	0
Residential Portfolio Segment [Member] \| One-to-Four Family Construction [Member]
Loans receivable	47,146	45,701
Residential Portfolio Segment [Member] \| One-to-Four Family Construction [Member] \| Real Estate [Member]
Loans receivable	1,328	961
Residential Portfolio Segment [Member] \| One-to-Four Family Construction [Member] \| Business Assets [Member]
Loans receivable	0	0
Residential Portfolio Segment [Member] \| One-to-Four Family Construction [Member] \| Other [Member]
Loans receivable	0	0
Commercial Real Estate Portfolio Segment [Member]
Loans receivable	938,451	916,783
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate Loan [Member]
Loans receivable	675,285	645,962
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate Loan [Member] \| Real Estate [Member]
Loans receivable	1,046	1,395
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate Loan [Member] \| Business Assets [Member]
Loans receivable	6,606	228
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate Loan [Member] \| Other [Member]
Loans receivable	0	0
Commercial Real Estate Portfolio Segment [Member] \| Commercial Construction and Development Portfolio Segment [Member] \| Real Estate [Member]
Loans receivable	957
Commercial Real Estate Portfolio Segment [Member] \| Commercial Construction and Development Portfolio Segment [Member] \| Business Assets [Member]
Loans receivable	0
Commercial Real Estate Portfolio Segment [Member] \| Commercial Construction and Development Portfolio Segment [Member] \| Other [Member]
Loans receivable	0
Commercial Real Estate Portfolio Segment [Member] \| Farmland Loan [Member]
Loans receivable	162,182	146,610
Commercial Real Estate Portfolio Segment [Member] \| Farmland Loan [Member] \| Real Estate [Member]
Loans receivable	368	108
Commercial Real Estate Portfolio Segment [Member] \| Farmland Loan [Member] \| Business Assets [Member]
Loans receivable	0	0
Commercial Real Estate Portfolio Segment [Member] \| Farmland Loan [Member] \| Other [Member]
Loans receivable	0	0
Home Equity Portfolio Segment [Member]
Loans receivable	102,778	97,543
Home Equity Portfolio Segment [Member] \| Real Estate [Member]
Loans receivable	198	216
Home Equity Portfolio Segment [Member] \| Business Assets [Member]
Loans receivable	0	0
Home Equity Portfolio Segment [Member] \| Other [Member]
Loans receivable	0	0
Consumer Portfolio Segment [Member]
Loans receivable	26,658	28,513
Consumer Portfolio Segment [Member] \| Real Estate [Member]
Loans receivable	0	0
Consumer Portfolio Segment [Member] \| Business Assets [Member]
Loans receivable	0	0
Consumer Portfolio Segment [Member] \| Other [Member]
Loans receivable	137	104
Commercial Portfolio Segment [Member]
Loans receivable	307,486	278,385
Commercial Portfolio Segment [Member] \| Commercial Loans [Member]
Loans receivable	152,335	144,039
Commercial Portfolio Segment [Member] \| Commercial Loans [Member] \| Real Estate [Member]
Loans receivable	0	0
Commercial Portfolio Segment [Member] \| Commercial Loans [Member] \| Business Assets [Member]
Loans receivable	276	220
Commercial Portfolio Segment [Member] \| Commercial Loans [Member] \| Other [Member]
Loans receivable	4	4
Commercial Portfolio Segment [Member] \| Agricultural Loan [Member]
Loans receivable	155,151	134,346
Commercial Portfolio Segment [Member] \| Agricultural Loan [Member] \| Real Estate [Member]
Loans receivable	34	37
Commercial Portfolio Segment [Member] \| Agricultural Loan [Member] \| Business Assets [Member]
Loans receivable	157	244
Commercial Portfolio Segment [Member] \| Agricultural Loan [Member] \| Other [Member]
Loans receivable	$ 0	$ 0

Note 3 - Loans Receivable - Collateral-dependent Loans (Details) - USD ($)
$ in Thousands

Jun. 30, 2025

Dec. 31, 2024

Loans receivable

$ 1,569,662

$ 1,520,646

Real Estate [Member]

Loans receivable

4,589

3,684

Business Assets [Member]

Loans receivable