Note 9 - Federal Taxes on Income - Reconciliation of Tax Provision (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income taxes computed at statutory rates	$ 3,909	$ 2,792
Tax-exempt income	(218)	(236)
Bank-owned life insurance income	(203)	(383)
Bank-owned life insurance penalty for early surrender of contract	0	748
Other, net	(294)	33
Income Tax Expense (Benefit), Total	$ 3,194	$ 2,954