Note 6 - Allowance for Credit Losses - Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Gross loans, before fee	$ 919,237	$ 437,158
Real Estate [Member]
Gross loans, before fee	5,447	687
Other Collateral [Member]
Gross loans, before fee	71	0
Collateral Pledged [Member]
Gross loans, before fee	5,518	687
Commercial Portfolio Segment [Member]
Gross loans, before fee	162,775	87,990
Commercial Portfolio Segment [Member] \| Real Estate [Member]
Gross loans, before fee	1,575	97
Commercial Portfolio Segment [Member] \| Other Collateral [Member]
Gross loans, before fee	71	0
Commercial Portfolio Segment [Member] \| Collateral Pledged [Member]
Gross loans, before fee	1,646	97
Commercial Real Estate Portfolio Segment [Member]
Gross loans, before fee	354,744	212,595
Commercial Real Estate Portfolio Segment [Member] \| Real Estate [Member]
Gross loans, before fee	2,271	0
Commercial Real Estate Portfolio Segment [Member] \| Other Collateral [Member]
Gross loans, before fee	0	0
Commercial Real Estate Portfolio Segment [Member] \| Collateral Pledged [Member]
Gross loans, before fee	2,271	0
Residential Portfolio Segment [Member] \| Real Estate Loan [Member]
Gross loans, before fee	356,458	121,345
Residential Portfolio Segment [Member] \| Home Equity Loan [Member]
Gross loans, before fee	32,745	7,186
Residential Portfolio Segment [Member] \| Real Estate [Member] \| Real Estate Loan [Member]
Gross loans, before fee	1,586	590
Residential Portfolio Segment [Member] \| Real Estate [Member] \| Home Equity Loan [Member]
Gross loans, before fee	15	0
Residential Portfolio Segment [Member] \| Other Collateral [Member] \| Real Estate Loan [Member]
Gross loans, before fee	0	0
Residential Portfolio Segment [Member] \| Other Collateral [Member] \| Home Equity Loan [Member]
Gross loans, before fee	0	0
Residential Portfolio Segment [Member] \| Collateral Pledged [Member] \| Real Estate Loan [Member]
Gross loans, before fee	1,586	590
Residential Portfolio Segment [Member] \| Collateral Pledged [Member] \| Home Equity Loan [Member]
Gross loans, before fee	15	0
Consumer Portfolio Segment [Member] \| Consumer, Other [Member]
Gross loans, before fee	4,360	1,526
Consumer Portfolio Segment [Member] \| Automobile Loan [Member]
Gross loans, before fee	8,155	6,516
Consumer Portfolio Segment [Member] \| Real Estate [Member] \| Consumer, Other [Member]
Gross loans, before fee	0	0
Consumer Portfolio Segment [Member] \| Real Estate [Member] \| Automobile Loan [Member]
Gross loans, before fee	0	0
Consumer Portfolio Segment [Member] \| Other Collateral [Member] \| Consumer, Other [Member]
Gross loans, before fee	0	0
Consumer Portfolio Segment [Member] \| Other Collateral [Member] \| Automobile Loan [Member]
Gross loans, before fee	0	0
Consumer Portfolio Segment [Member] \| Collateral Pledged [Member] \| Consumer, Other [Member]
Gross loans, before fee	0	0
Consumer Portfolio Segment [Member] \| Collateral Pledged [Member] \| Automobile Loan [Member]
Gross loans, before fee	$ 0	$ 0

Note 6 - Allowance for Credit Losses - Collateral Dependent Loans (Details) - USD ($)
$ in Thousands

Dec. 31, 2025

Dec. 31, 2024

Gross loans, before fee

$ 919,237

$ 437,158

Real Estate [Member]

Gross loans, before fee

5,447

687

Other Collateral [Member]

Gross loans, before fee