Note 5 - Premises and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Premises and Equipment
Lease expenses	$ 662	$ 732
Right of use assets	1,700	1,900
Increase in ROU assets capitalized	0
Operating lease liability	$ 1,700	$ 1,900
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Other liabilities	Other liabilities
Interest income from direct financing lease	$ 5,100	$ 6,100
Net investment in direct financing lease	$ 65,300	$ 88,300