Note 3 - Loans Receivable - Collateral-dependent Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Loans receivable	$ 1,717,378	$ 1,519,019
Real Estate [Member]
Loans receivable	7,036	2,341
Business Assets [Member]
Loans receivable	3,287	3,619
Other [Member]
Loans receivable	46	216
Residential Portfolio Segment [Member]
Loans receivable	199,226	183,793
Residential Portfolio Segment [Member] \| One-to-Four Family Loans [Member]
Loans receivable	141,025	148,515
Residential Portfolio Segment [Member] \| One-to-Four Family Loans [Member] \| Real Estate [Member]
Loans receivable	1,558	822
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
Commercial Real Estate Portfolio Segment [Member]
Loans receivable	1,061,474	918,839
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate Loan [Member]
Loans receivable	784,706	635,970
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate Loan [Member] \| Real Estate [Member]
Loans receivable	91	97
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate Loan [Member] \| Business Assets [Member]
Loans receivable	420	492
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	1
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	172,210	162,580
Commercial Real Estate Portfolio Segment [Member] \| Farmland Loan [Member] \| Real Estate [Member]
Loans receivable	5,181	1,143
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
Commercial Construction and Development Portfolio Segment [Member] \| Real Estate [Member]
Loans receivable		1
Commercial Construction and Development Portfolio Segment [Member] \| Business Assets [Member]
Loans receivable		0
Commercial Construction and Development Portfolio Segment [Member] \| Other [Member]
Loans receivable		0
Home Equity Portfolio Segment [Member]
Loans receivable	115,937	108,073
Home Equity Portfolio Segment [Member] \| Real Estate [Member]
Loans receivable	180	278
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	21,096	24,424
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	42	202
Commercial Portfolio Segment [Member]
Loans receivable	319,645	283,890
Commercial Portfolio Segment [Member] \| Commercial Loans [Member]
Loans receivable	175,001	149,431
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	814	482
Commercial Portfolio Segment [Member] \| Commercial Loans [Member] \| Other [Member]
Loans receivable	4	14
Commercial Portfolio Segment [Member] \| Agricultural Loan [Member]
Loans receivable	144,644	134,459
Commercial Portfolio Segment [Member] \| Agricultural Loan [Member] \| Real Estate [Member]
Loans receivable	25	0
Commercial Portfolio Segment [Member] \| Agricultural Loan [Member] \| Business Assets [Member]
Loans receivable	2,053	2,645
Commercial Portfolio Segment [Member] \| Agricultural Loan [Member] \| Other [Member]
Loans receivable	$ 0	$ 0

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

Sep. 30, 2026

Dec. 31, 2025

Loans receivable

$ 1,717,378

$ 1,519,019

Real Estate [Member]

Loans receivable

7,036

2,341

Business Assets [Member]

Loans receivable