Note 21 - Parent Company Financial Information - Statements of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Dividends	$ 121	$ 97
Federal funds sold	249	228
Other income	309	122
Professional fees	667	452
Other expense	2,204	1,968
Federal income tax benefit	(1,780)	(1,214)
Net income	7,155	4,526
Parent Company [Member]
Dividends	1,484	1,123
Federal funds sold	3
Other income		1
	1,487	1,124
Professional fees	74	68
Other expense	5	8
	79	76
Income before tax benefit and equity in undistributed income of affiliate	1,408	1,048
Federal income tax benefit	16	16
Income before equity in undistributed income of affiliate	1,424	1,064
Equity in undistributed income of affiliate	5,731	3,462
Net income	$ 7,155	$ 4,526