Note 14 - Segment Reporting - Segment Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Revenue	$ 32,779	$ 22,335
Income (loss) from operations	480	2,866
Depreciation expense	279	263
Interest expense, net	313	403
Total assets	17,567	9,110
Facilities Segment [Member]
Revenue	9,257	15,186
Facilities Segment [Member] | Operating Segments [Member]
Revenue	9,257	15,186
Income (loss) from operations	1,852	4,317
Depreciation expense	68	32
Interest expense, net	173	256
Total assets	939	1,063
System Integration Services Segment [Member]
Revenue	23,522	7,149
System Integration Services Segment [Member] | Operating Segments [Member]
Revenue	23,522	7,149
Income (loss) from operations	(1,372)	(1,451)
Depreciation expense	211	231
Interest expense, net	140	147
Total assets	6,120	1,514
Other Segments [Member] | Operating Segments [Member]
Total assets	$ 10,508	$ 6,533