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Note 1 - Significant Accounting Policies - Disaggregated Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenue	$ 27,410	$ 45,062
Facilities Segment [Member]
Revenue	7,075	9,003
Facilities Segment [Member] | Maintenance [Member]
Revenue	3,540	3,749
Facilities Segment [Member] | Equipment Sales [Member]
Revenue	2,039	1,980
Facilities Segment [Member] | Deployment and Other Services [Member]
Revenue	1,496	3,274
System Integration Services Segment [Member]
Revenue	20,335	36,059
System Integration Services Segment [Member] | Integration Services [Member]
Revenue	5,668	7,286
System Integration Services Segment [Member] | Procurement Services [Member]
Revenue	$ 14,667	$ 28,773

X

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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