Note 5 - Fair Value Presentation - Summary of Assets and Liabilities Measured on Nonrecurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Other real estate owned, net	$ 900	$ 1,697
Fair Value, Nonrecurring [Member]
Other real estate owned, net	900	1,697
Property held for sale	2,760	2,728
Assets, fair value	3,672	4,425
Fair Value, Nonrecurring [Member] \| Secured [Member] \| Consumer Portfolio Segment [Member]
Consumer secured loans	12
Fair Value, Inputs, Level 1 [Member] \| Fair Value, Nonrecurring [Member]
Other real estate owned, net	0	0
Property held for sale	0	0
Assets, fair value	0	0
Fair Value, Inputs, Level 1 [Member] \| Fair Value, Nonrecurring [Member] \| Secured [Member] \| Consumer Portfolio Segment [Member]
Consumer secured loans	0
Fair Value, Inputs, Level 2 [Member] \| Fair Value, Nonrecurring [Member]
Other real estate owned, net	0	0
Property held for sale	0	0
Assets, fair value	0	0
Fair Value, Inputs, Level 2 [Member] \| Fair Value, Nonrecurring [Member] \| Secured [Member] \| Consumer Portfolio Segment [Member]
Consumer secured loans	0
Fair Value, Inputs, Level 3 [Member] \| Fair Value, Nonrecurring [Member]
Other real estate owned, net	900	1,697
Property held for sale	2,760	2,728
Assets, fair value	3,672	$ 4,425
Fair Value, Inputs, Level 3 [Member] \| Fair Value, Nonrecurring [Member] \| Secured [Member] \| Consumer Portfolio Segment [Member]
Consumer secured loans	$ 12