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Note 8 - Segment Reporting - Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Revenue	$ 6,421	$ 3,068	$ 11,613	$ 8,238
Assets	20,598		20,598		$ 19,281
Depreciation expense	70	136	180	273
Income (loss) from operations	939	(351)	766	(958)
Interest expense	158	103	282	188
Corporate, Non-Segment [Member]
Assets	14,843		14,843		15,252
Facilities Segment [Member]
Revenue	3,598	1,613	5,677	3,193
Facilities Segment [Member] | Operating Segments [Member]
Revenue	3,599	1,613	5,678	3,193
Assets	1,166		1,166		851
Depreciation expense	53	89	109	156
Income (loss) from operations	1,122	146	1,240	76
Interest expense	101	60	181	110
System Integration Services Segment [Member]
Revenue	2,823	1,455	5,936	5,045
System Integration Services Segment [Member] | Operating Segments [Member]
Revenue	2,822	1,455	5,935	5,045
Assets	4,589		4,589		$ 3,178
Depreciation expense	17	47	71	117
Income (loss) from operations	(183)	(497)	(474)	(1,034)
Interest expense	$ 57	$ 43	$ 101	$ 78

X

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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