Note 3 - Loans Receivable - Collateral-dependent Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Loans receivable	$ 1,558,344	$ 1,519,019
Real Estate [Member]
Loans receivable	4,116	2,341
Business Assets [Member]
Loans receivable	2,080	3,619
Other [Member]
Loans receivable	73	216
Residential Portfolio Segment [Member]
Loans receivable	189,376	183,793
Residential Portfolio Segment [Member] \| One-to-Four Family Loans [Member]
Loans receivable	143,748	148,515
Residential Portfolio Segment [Member] \| One-to-Four Family Loans [Member] \| Real Estate [Member]
Loans receivable	897	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	940,507	918,839
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate Loan [Member]
Loans receivable	684,381	635,970
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate Loan [Member] \| Real Estate [Member]
Loans receivable	93	97
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate Loan [Member] \| Business Assets [Member]
Loans receivable	975	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	157,275	162,580
Commercial Real Estate Portfolio Segment [Member] \| Farmland Loan [Member] \| Real Estate [Member]
Loans receivable	2,651	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	108,629	108,073
Home Equity Portfolio Segment [Member] \| Real Estate [Member]
Loans receivable	474	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	21,459	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	69	202
Commercial Portfolio Segment [Member]
Loans receivable	298,373	283,890
Commercial Portfolio Segment [Member] \| Commercial Loans [Member]
Loans receivable	161,457	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	248	482
Commercial Portfolio Segment [Member] \| Commercial Loans [Member] \| Other [Member]
Loans receivable	4	14
Commercial Portfolio Segment [Member] \| Agricultural Loan [Member]
Loans receivable	136,916	134,459
Commercial Portfolio Segment [Member] \| Agricultural Loan [Member] \| Real Estate [Member]
Loans receivable	0	0
Commercial Portfolio Segment [Member] \| Agricultural Loan [Member] \| Business Assets [Member]
Loans receivable	857	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

Jun. 30, 2026

Dec. 31, 2025

Loans receivable

$ 1,558,344

$ 1,519,019

Real Estate [Member]

Loans receivable

4,116

2,341

Business Assets [Member]

Loans receivable