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Note 8 - Segment Reporting - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenue	$ 611	$ 956	$ 1,237	$ 1,994
All Products [Member] | Product Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member]
Concentration Risk, Percentage	100.00%	100.00%	100.00%	100.00%
Managed Services [Member]
Revenue	$ 508	$ 640	$ 1,030	$ 1,330
Managed Services [Member] | Product Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member]
Concentration Risk, Percentage	83.00%	67.00%	83.00%	67.00%
Managed Services [Member] | Video Collaboration Service [Member]
Revenue	$ 21	$ 46	$ 35	$ 110
Managed Services [Member] | Video Collaboration Service [Member] | Product Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member]
Concentration Risk, Percentage	3.00%	5.00%	3.00%	6.00%
Managed Services [Member] | Network Services [Member]
Revenue	$ 484	$ 583	$ 987	$ 1,201
Managed Services [Member] | Network Services [Member] | Product Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member]
Concentration Risk, Percentage	79.00%	61.00%	80.00%	60.00%
Managed Services [Member] | Professional and Other Services [Member]
Revenue	$ 3	$ 11	$ 8	$ 19
Managed Services [Member] | Professional and Other Services [Member] | Product Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member]
Concentration Risk, Percentage	0.00%	1.00%	1.00%	1.00%
Collaboration Products [Member] | Video Collaboration Service [Member]
Revenue	$ 103	$ 316	$ 207	$ 664
Collaboration Products [Member] | Video Collaboration Service [Member] | Product Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member]
Concentration Risk, Percentage	17.00%	33.00%	17.00%	33.00%

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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