Note 16 - Business Segments - Profit and Assets for the Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Interest income - external customers	$ 7,844	$ 7,732
Total non-interest income	2,471	1,691
Intersegment interest income	0
Intersegment non-interest income	0	0
Interest expense	892	690
Provision for loan losses	460	27
Non-interest expense	7,001	6,446
Income tax expense	577	640
Net income	1,385	1,620
Total assets	784,200	722,745	$ 777,639
Consolidation, Eliminations [Member]
Interest income - external customers	0	0
Total non-interest income	0	0
Intersegment interest income	(15)
Intersegment non-interest income	(1,583)	(1,821)
Interest expense	(15)	0
Provision for loan losses	0	0
Non-interest expense	(59)	(59)
Income tax expense	0	0
Net income	(1,524)	(1,762)
Total assets	(94,612)	(84,537)
Home Federal Savings Bank [Member] | Operating Segments [Member]
Interest income - external customers	7,844	7,732
Total non-interest income	2,471	1,691
Intersegment interest income	0
Intersegment non-interest income	59	59
Interest expense	907	690
Provision for loan losses	460	27
Non-interest expense	6,874	6,332
Income tax expense	609	671
Net income	1,524	1,762
Total assets	783,615	721,736
Other Segments [Member] | Operating Segments [Member]
Interest income - external customers	0	0
Total non-interest income	0	0
Intersegment interest income	15
Intersegment non-interest income	1,524	1,762
Interest expense	0	0
Provision for loan losses	0	0
Non-interest expense	186	173
Income tax expense	(32)	(31)
Net income	1,385	1,620
Total assets	$ 95,197	$ 85,546