Note 8 - Fair Value - Schedule of Financial Assets at Fair Value Measured on Nonrecurring Basis (Details) - Fair Value, Nonrecurring [Member] - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Mortgage servicing rights	$ 847	$ 403
Fair Value, Inputs, Level 1 [Member]
Mortgage servicing rights	0	0
Fair Value, Inputs, Level 2 [Member]
Mortgage servicing rights	847	403
Fair Value, Inputs, Level 3 [Member]
Mortgage servicing rights	0	0
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied [Member]
Loans receivable, fair value	126
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied [Member] \| Fair Value, Inputs, Level 1 [Member]
Loans receivable, fair value	0
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied [Member] \| Fair Value, Inputs, Level 2 [Member]
Loans receivable, fair value	0
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied [Member] \| Fair Value, Inputs, Level 3 [Member]
Loans receivable, fair value	126
Commercial Real Estate Portfolio Segment [Member] \| Nonowner Occupied [Member]
Loans receivable, fair value	12,112	7,286
Commercial Real Estate Portfolio Segment [Member] \| Nonowner Occupied [Member] \| Fair Value, Inputs, Level 1 [Member]
Loans receivable, fair value	0	0
Commercial Real Estate Portfolio Segment [Member] \| Nonowner Occupied [Member] \| Fair Value, Inputs, Level 2 [Member]
Loans receivable, fair value	0	0
Commercial Real Estate Portfolio Segment [Member] \| Nonowner Occupied [Member] \| Fair Value, Inputs, Level 3 [Member]
Loans receivable, fair value	12,112	7,286
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member]
Loans receivable, fair value	2,170	2,418
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member] \| Fair Value, Inputs, Level 1 [Member]
Loans receivable, fair value	0	0
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member] \| Fair Value, Inputs, Level 2 [Member]
Loans receivable, fair value	0	0
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member] \| Fair Value, Inputs, Level 3 [Member]
Loans receivable, fair value	2,170	2,418
Other Loans [Member]
Loans receivable, fair value	1,041
Other Loans [Member] \| Fair Value, Inputs, Level 1 [Member]
Loans receivable, fair value	0
Other Loans [Member] \| Fair Value, Inputs, Level 2 [Member]
Loans receivable, fair value	0
Other Loans [Member] \| Fair Value, Inputs, Level 3 [Member]
Loans receivable, fair value	1,041
Residential Portfolio Segment [Member] \| 1-4 Family Residential [Member]
Loans receivable, fair value	535	1,132
Residential Portfolio Segment [Member] \| 1-4 Family Residential [Member] \| Fair Value, Inputs, Level 1 [Member]
Loans receivable, fair value	0	0
Residential Portfolio Segment [Member] \| 1-4 Family Residential [Member] \| Fair Value, Inputs, Level 2 [Member]
Loans receivable, fair value	0	0
Residential Portfolio Segment [Member] \| 1-4 Family Residential [Member] \| Fair Value, Inputs, Level 3 [Member]
Loans receivable, fair value	$ 535	$ 1,132