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Note 8 - Segment Reporting - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenue	$ 578	$ 872	$ 1,815	$ 2,866
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	$ 510	$ 603	$ 1,540	$ 1,933
Managed Services [Member] | Product Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member]
Concentration Risk, Percentage	88.00%	69.00%	85.00%	67.00%
Managed Services [Member] | Video Collaboration Service [Member]
Revenue	$ 6	$ 38	$ 41	$ 148
Managed Services [Member] | Video Collaboration Service [Member] | Product Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member]
Concentration Risk, Percentage	1.00%	4.00%	2.00%	5.00%
Managed Services [Member] | Network Services [Member]
Revenue	$ 502	$ 557	$ 1,489	$ 1,758
Managed Services [Member] | Network Services [Member] | Product Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member]
Concentration Risk, Percentage	87.00%	64.00%	82.00%	61.00%
Managed Services [Member] | Professional and Other Services [Member]
Revenue	$ 2	$ 8	$ 10	$ 27
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]
Revenue	$ 68	$ 269	$ 275	$ 933
Collaboration Products [Member] | Product Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member]
Concentration Risk, Percentage	12.00%	31.00%	15.00%	33.00%
Collaboration Products [Member] | Video Collaboration Service [Member]
Revenue	$ 68	$ 268	$ 275	$ 932
Collaboration Products [Member] | Video Collaboration Service [Member] | Product Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member]
Concentration Risk, Percentage	12.00%	31.00%	15.00%	33.00%
Collaboration Products [Member] | Professional and Other Services [Member]
Revenue	$ 0	$ 1	$ 0	$ 1
Collaboration Products [Member] | Professional and Other Services [Member] | Product Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member]
Concentration Risk, Percentage	0.00%	0.00%	0.00%	0.00%

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