Note 9 - Segment Reporting - Disaggregation of Revenue (Details) - USD ($)		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023
Revenue		$ 2,378,000	$ 3,810,000
Research and development		155,000	20,000
Bad debt expense (recovery)		2,000	(52,000)
Segment profit (loss)		331,000	911,000
Loss before income tax expense	[1]	(4,033,000)	(4,357,000)
Bad debt recovery		(2,000)	52,000
Amortization expense			345,000
Impairment charges		0	262,000
Casualty gain		0	(400,000)
Operating Segments [Member] | Managed Services [Member]
Revenue		2,062,000	2,518,000
Labor and labor-related (1)	[2]	132,000	125,000
Research and development		0
Bad debt expense (recovery)		0	0
Other segment items (2)	[3]	0	13,000
Segment profit (loss)		$ 724,000	$ 834,000
Segment margin		35.00%	33.00%
Bad debt recovery		$ 0	$ 0
Amortization expense			0
Impairment charges			3,000
Casualty gain			0
Operating Segments [Member] | Managed Services [Member] | Network Services [Member]
Revenue		1,990,000	2,301,000
Operating Segments [Member] | Managed Services [Member] | Video Collaboration Service [Member]
Revenue		56,000	183,000
Operating Segments [Member] | Managed Services [Member] | Professional and Other Services [Member]
Revenue		16,000	34,000
Operating Segments [Member] | Managed Services [Member] | Inventory and Inventory-related [Member]
Cost of Revenue		0	0
Operating Segments [Member] | Managed Services [Member] | Circuit and Network [Member]
Cost of Revenue		1,202,000	1,529,000
Operating Segments [Member] | Managed Services [Member] | Other Non-inventory [Member]
Cost of Revenue		4,000	14,000
Operating Segments [Member] | Collaboration Products [Member]
Revenue		316,000	1,292,000
Labor and labor-related (1)	[2]	596,000	863,000
Research and development		145,000
Bad debt expense (recovery)		2,000	(52,000)
Other segment items (2)	[3]	0	53,000
Segment profit (loss)		$ (719,000)	$ (440,000)
Segment margin		(228.00%)	(34.00%)
Bad debt recovery		$ (2,000)	$ 52,000
Amortization expense			345,000
Impairment charges			259,000
Casualty gain			(400,000)
Operating Segments [Member] | Collaboration Products [Member] | Network Services [Member]
Revenue		0	0
Operating Segments [Member] | Collaboration Products [Member] | Video Collaboration Service [Member]
Revenue		316,000	1,291,000
Operating Segments [Member] | Collaboration Products [Member] | Professional and Other Services [Member]
Revenue		0	1,000
Operating Segments [Member] | Collaboration Products [Member] | Inventory and Inventory-related [Member]
Cost of Revenue		273,000	500,000
Operating Segments [Member] | Collaboration Products [Member] | Circuit and Network [Member]
Cost of Revenue		0
Operating Segments [Member] | Collaboration Products [Member] | Other Non-inventory [Member]
Cost of Revenue		19,000	164,000
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]
Revenue		2,378,000	3,810,000
Labor and labor-related (1)	[2]	728,000	988,000
Research and development		145,000
Bad debt expense (recovery)		2,000
Other segment items (2)	[3]	0	66,000
Segment profit (loss)		5,000	394,000
Corporate expenses (3)	[4]	4,127,000	4,406,000
Stock Based Compensation		62,000	504,000	[4]
Interest income		(151,000)	(159,000)	[4]
Loss before income tax expense		(4,033,000)	(4,357,000)	[4]
Bad debt recovery		(2,000)
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | Network Services [Member]
Revenue		1,990,000	2,301,000
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | Video Collaboration Service [Member]
Revenue		372,000	1,474,000
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | Professional and Other Services [Member]
Revenue		16,000	35,000
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | Inventory and Inventory-related [Member]
Cost of Revenue		273,000	500,000
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | Circuit and Network [Member]
Cost of Revenue		1,202,000	1,529,000
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | Other Non-inventory [Member]
Cost of Revenue		$ 23,000	$ 178,000

[1] Other income (expense) for our segments includes interest expense and non-operating income. Corporate other income includes interest income on our cash and cash equivalents.

[2] Includes direct labor costs (including sales and marketing costs), employment taxes, employee benefits, worker's compensation, and office expenses. For the year ended December 31, 2024, this also includes $46,000of severance costs.

[3] Other segment items include other income and expenses, net, interest expense, certain professional services, and miscellaneous taxes and fees.

[4] Represents general and administrative costs, less the amounts allocated to the segments for labor and benefits, general liability insurance, professional services, property taxes, and interest income. For the year ended December 31, 2024, this also includes severance costs of $59,000 and franchise taxes of $176,000.