Note 16 - Business Segments - Profit and Assets for the Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Interest income - external customers	$ 7,456	$ 6,999	$ 14,614	$ 13,658
Non-interest income - external customers	2,054	1,906	3,830	3,786
Intersegment non-interest income	0	0	0	0
Interest expense	526	461	996	869
Other non-interest expense	6,313	6,439	12,867	12,786
Income tax expense	649	712	1,239	1,553
Net income	1,727	1,024	3,172	2,237
Total assets	726,285	725,183	726,285	725,183	$ 722,685
Intersegment non-interest income	0	0	0	0
Consolidation, Eliminations [Member]
Interest income - external customers	0	0	0	0
Non-interest income - external customers	0	0	0	0
Intersegment non-interest income	(1,922)	(1,273)	(3,569)	(2,741)
Interest expense	0	0	0	0
Other non-interest expense	(52)	(52)	(105)	(105)
Income tax expense	0	0	0	0
Net income	(1,870)	(1,221)	(3,464)	(2,636)
Total assets	(81,426)	(84,050)	(81,426)	(84,050)
Intersegment non-interest income	(1,922)	(1,273)	(3,569)	(2,741)
Home Federal Savings Bank [Member] | Operating Segments [Member]
Interest income - external customers	7,456	6,999	14,614	13,658
Non-interest income - external customers	2,054	1,906	3,830	3,786
Intersegment non-interest income	52	52	105	105
Interest expense	526	345	996	640
Other non-interest expense	6,191	6,316	12,616	12,529
Income tax expense	680	806	1,303	1,745
Net income	1,870	1,221	3,464	2,636
Total assets	726,121	724,407	726,121	724,407
Intersegment non-interest income	52	52	105	105
Other Segments [Member] | Operating Segments [Member]
Interest income - external customers	0	0	0	0
Non-interest income - external customers	0	0	0	0
Intersegment non-interest income	1,870	1,221	3,464	2,636
Interest expense	0	116	0	229
Other non-interest expense	174	175	356	362
Income tax expense	(31)	(94)	(64)	(192)
Net income	1,727	1,024	3,172	2,237
Total assets	81,590	84,826	81,590	84,826
Intersegment non-interest income	$ 1,870	$ 1,221	$ 3,464	$ 2,636