Note 8 - Leases - Lease Information and Expenses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Weighted average remaining lease term (in years) (Year)	4 years 11 months 12 days		5 years 1 month 20 days
Weighted average discount rate	3.29%		3.29%
Operating lease expense	$ 92	$ 76
Short-term lease expense	1	1
Total lease expense	93	77
Cash paid for amounts included in lease liabilities	94	78
Right-of-use assets obtained in exchange for operating lease liabilities commencing during the period	0	$ 25
Other Liabilities [Member]
Lease liability	1,365		$ 1,444
Other Assets [Member]
Right-of-use asset	$ 1,336		$ 1,415