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Note 13 - Segment Reporting - Segment Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Revenue	$ 18,316	$ 27,373
Income (loss) from operations	1,106	(633)
Depreciation expense	339	447
Interest expense, net	328	365
Total assets	6,727	8,576
Segment Reconciling Items [Member]
Total assets	2,473	2,448
Facilities Segment [Member] | Operating Segments [Member]
Revenue	12,254	21,751
Income (loss) from operations	2,816	551
Depreciation expense	33	64
Interest expense, net	184	294
Total assets	2,682	4,190
System Integration Services Segment [Member] | Operating Segments [Member]
Revenue	6,062	5,622
Income (loss) from operations	(1,710)	(1,184)
Depreciation expense	306	383
Interest expense, net	144	71
Total assets	$ 1,572	$ 1,938

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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