Note 16 - Business Segments - Profit and Assets for the Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Interest income - external customers	$ 7,732	$ 7,158
Total non-interest income	1,691	1,776
Intersegment non-interest income	0	0
Interest expense	690	470
Non-interest expense	6,446	6,554
Income tax expense	640	590
Net income	1,620	1,445
Total assets	722,745	722,339	$ 712,315
Intersegment non-interest income	0	0
Consolidation, Eliminations [Member]
Interest income - external customers	0	0
Total non-interest income	0	0
Intersegment non-interest income	(1,821)	(1,647)
Interest expense	0	0
Non-interest expense	(59)	(53)
Income tax expense	0	0
Net income	(1,762)	(1,594)
Total assets	(84,537)	(83,128)
Intersegment non-interest income	(1,821)	(1,647)
Home Federal Savings Bank [Member] | Operating Segments [Member]
Interest income - external customers	7,732	7,158
Total non-interest income	1,691	1,776
Intersegment non-interest income	59	53
Interest expense	690	470
Non-interest expense	6,332	6,425
Income tax expense	671	623
Net income	1,762	1,594
Total assets	721,736	722,158
Intersegment non-interest income	59	53
Other Segments [Member] | Operating Segments [Member]
Interest income - external customers	0	0
Total non-interest income	0	0
Intersegment non-interest income	1,762	1,594
Interest expense	0	0
Non-interest expense	173	182
Income tax expense	(31)	(33)
Net income	1,620	1,445
Total assets	85,546	83,309
Intersegment non-interest income	$ 1,762	$ 1,594