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Note 7 - Segment Reporting - Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Revenue $ 622 $ 626
Bad debt (recovery) expense (18) 0
Segment profit 249 (3)
Interest income 26 48
Loss before income tax expense [1] (665) (1,136)
Operating Segments [Member] | Managed Services [Member]    
Revenue 508 522
Labor and labor-related (1) [2] 68 32
Bad debt (recovery) expense 0  
Other segment items (2) [3] 1 0
Segment profit $ 136 $ 152
Segment profit margin % 27.00% 29.00%
Operating Segments [Member] | Managed Services [Member] | Video Collaboration Service [Member]    
Revenue $ 6 $ 14
Operating Segments [Member] | Managed Services [Member] | Network Services [Member]    
Revenue 500 503
Operating Segments [Member] | Managed Services [Member] | Professional and Other Services [Member]    
Revenue 2 5
Operating Segments [Member] | Managed Services [Member] | Circuit and Network [Member]    
Cost of Revenue 303 338
Operating Segments [Member] | Managed Services [Member] | Property and Office Expense [Member]    
Cost of Revenue [3]   0
Operating Segments [Member] | Managed Services [Member] | Inventory and Inventory-related [Member]    
Cost of Revenue   0
Operating Segments [Member] | Managed Services [Member] | Other Non-inventory [Member]    
Cost of Revenue   0
Operating Segments [Member] | Collaboration Products [Member]    
Revenue 114 104
Labor and labor-related (1) [2] 6 217
Bad debt (recovery) expense (18)  
Other segment items (2) [3] 5 4
Segment profit $ 121 $ (261)
Segment profit margin % 106.00% (251.00%)
Operating Segments [Member] | Collaboration Products [Member] | Video Collaboration Service [Member]    
Revenue $ 114 $ 104
Operating Segments [Member] | Collaboration Products [Member] | Network Services [Member]    
Revenue 0 0
Operating Segments [Member] | Collaboration Products [Member] | Professional and Other Services [Member]    
Revenue 0 0
Operating Segments [Member] | Collaboration Products [Member] | Circuit and Network [Member]    
Cost of Revenue 0 0
Operating Segments [Member] | Collaboration Products [Member] | Property and Office Expense [Member]    
Cost of Revenue [3]   28
Operating Segments [Member] | Collaboration Products [Member] | Inventory and Inventory-related [Member]    
Cost of Revenue   109
Operating Segments [Member] | Collaboration Products [Member] | Other Non-inventory [Member]    
Cost of Revenue   7
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]    
Revenue 622 626
Labor and labor-related (1) [2] 74 249
Bad debt (recovery) expense (18)  
Other segment items (2) [3] 6 4
Segment profit $ 257 $ (109)
Segment profit margin %
Corporate expenses (3) [4] $ 949 $ 1,031
Interest income (27) (35) [4]
Loss before income tax expense (665) (1,136) [4]
Stock compensation [4]   31
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | Video Collaboration Service [Member]    
Revenue 120 118
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | Network Services [Member]    
Revenue 500 503
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | Professional and Other Services [Member]    
Revenue 2 5
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | Circuit and Network [Member]    
Cost of Revenue $ 303 338
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | Property and Office Expense [Member]    
Cost of Revenue [3]   28
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | Inventory and Inventory-related [Member]    
Cost of Revenue   109
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | Other Non-inventory [Member]    
Cost of Revenue   $ 7
[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.
[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.