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Note 8 - Segment Reporting - Schedule of Segment Reporting Information by Segment (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Jun. 30, 2024
Mar. 31, 2024
Sep. 30, 2023
Jun. 30, 2023
Mar. 31, 2023
Sep. 30, 2024
Sep. 30, 2023
Revenue $ 578,000     $ 872,000     $ 1,815,000 $ 2,866,000
Cost of revenues 499,000     648,000     1,619,000 2,244,000
Gross profit $ 79,000     $ 224,000     $ 196,000 $ 622,000
Gross profit % 14.00%     26.00%     11.00% 22.00%
Operating expenses $ 1,151,000     $ 1,149,000     $ 3,470,000 $ 3,841,000
Operating income (loss) (1,072,000)     (925,000)     (3,274,000) (3,219,000)
Interest income, net (32,000)     (30,000)     (124,000) (94,000)
Income (loss) before income taxes (1,040,000)     (895,000)     (3,150,000) (3,125,000)
Income tax expense 0     0     9,000 38,000
Net loss (1,040,000) $ (983,000) $ (1,136,000) (895,000) $ (1,049,000) $ (1,219,000) (3,159,000) (3,163,000)
Reportable Subsegments [Member]                
Operating expenses 164,000     151,000     469,000 64,000
Intersubsegment Eliminations [Member]                
Operating expenses 987,000     998,000     3,001,000 3,777,000
Managed Services [Member]                
Revenue 510,000     603,000     1,540,000 1,933,000
Collaboration Products [Member]                
Revenue 68,000     269,000     275,000 933,000
Operating Segments [Member] | Managed Services [Member]                
Revenue 510,000     603,000     1,540,000 1,933,000
Cost of revenues 295,000     398,000     995,000 1,288,000
Gross profit $ 215,000     $ 205,000     $ 545,000 $ 645,000
Gross profit % 42.00%     34.00%     35.00% 33.00%
Operating expenses $ 60,000     $ 0     $ 122,000 $ 3,000
Operating income (loss) 155,000     205,000     423,000 642,000
Interest income, net (31,000)     (35,000)     (98,000) (69,000)
Income (loss) before income taxes 186,000     240,000     521,000 711,000
Income tax expense 0     0     6,000 7,000
Net loss 186,000     240,000     515,000 704,000
Operating Segments [Member] | Managed Services [Member] | Reportable Subsegments [Member]                
Operating expenses 60,000     0     122,000 3,000
Operating Segments [Member] | Managed Services [Member] | Intersubsegment Eliminations [Member]                
Operating expenses 0     0     0 0
Operating Segments [Member] | Collaboration Products [Member]                
Revenue 68,000     269,000     275,000 933,000
Cost of revenues 204,000     250,000     624,000 956,000
Gross profit $ (136,000)     $ 19,000     $ (349,000) $ (23,000)
Gross profit % (200.00%)     7.00%     (127.00%) (2.00%)
Operating expenses $ 104,000     $ 151,000     $ 347,000 $ 61,000
Operating income (loss) (240,000)     (132,000)     (696,000) (84,000)
Interest income, net (1,000)     5,000     (26,000) (25,000)
Income (loss) before income taxes (239,000)     (137,000)     (670,000) (59,000)
Income tax expense 0     0     3,000 31,000
Net loss (239,000)     (137,000)     (673,000) (90,000)
Operating Segments [Member] | Collaboration Products [Member] | Reportable Subsegments [Member]                
Operating expenses 104,000     151,000     347,000 61,000
Operating Segments [Member] | Collaboration Products [Member] | Intersubsegment Eliminations [Member]                
Operating expenses 0     0     0 0
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]                
Revenue 0     0     0 0
Cost of revenues 0     0     0 0
Gross profit $ 0     $ 0     $ 0 $ 0
Gross profit %        
Operating expenses $ 987,000     $ 998,000     $ 3,001,000 $ 3,777,000
Operating income (loss) (987,000)     (998,000)     (3,001,000) (3,777,000)
Interest income, net 0     0     0 0
Income (loss) before income taxes (987,000)     (998,000)     (3,001,000) (3,777,000)
Income tax expense 0     0     0 0
Net loss (987,000)     (998,000)     (3,001,000) (3,777,000)
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | Reportable Subsegments [Member]                
Operating expenses 0     0     0 0
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | Intersubsegment Eliminations [Member]                
Operating expenses $ 987,000     $ 998,000     $ 3,001,000 $ 3,777,000