Quarterly report pursuant to Section 13 or 15(d)

Segment Information (Schedule of Segment Information) (Details)

v3.20.1
Segment Information (Schedule of Segment Information) (Details) - USD ($)
 3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Segment Reporting Information [Line Items]      
Sales $ 9,162,742 $ 11,216,170  
Cost of sales 5,425,595 6,589,954  
Gross profit 3,737,147 4,626,216  
Selling, general and administrative expenses 4,960,890 5,447,595  
Operating loss from continuing operations (1,223,743) (821,379)  
Other income (expense) 410,567 25,511  
Operating loss from continuing operations before income taxes (813,176) (795,868)  
Depreciation and amortization 211,461 279,248  
Capital expenditures 57,000 210,000  
Assets 56,838,766 52,191,000 $ 59,150,712
Intersegment Eliminations [Member]      
Segment Reporting Information [Line Items]      
Sales (252,000) (330,000)  
Cost of sales (12,000) (114,000)  
Gross profit (240,000) (216,000)  
Selling, general and administrative expenses (240,000) (216,000)  
Depreciation and amortization    
Capital expenditures    
Assets (27,000) (27,000)  
Transition Networks [Member]      
Segment Reporting Information [Line Items]      
Sales 8,164,000 8,890,000  
Cost of sales 4,604,000 5,136,000  
Gross profit 3,560,000 3,754,000  
Selling, general and administrative expenses 3,344,000 3,695,000  
Operating loss from continuing operations 216,000 59,000  
Other income (expense)    
Operating loss from continuing operations before income taxes 216,000 59,000  
Depreciation and amortization 54,000 79,000  
Capital expenditures 41,000  
Assets 13,087,000 17,668,000  
JDL Technologies [Member]      
Segment Reporting Information [Line Items]      
Sales 827,000 2,208,000  
Cost of sales 620,000 1,341,000  
Gross profit 207,000 867,000  
Selling, general and administrative expenses 328,000 376,000  
Operating loss from continuing operations (121,000) 491,000  
Other income (expense)   (10,000)  
Operating loss from continuing operations before income taxes (121,000) 481,000  
Depreciation and amortization 13,000 28,000  
Capital expenditures 36,000  
Assets 1,394,000 3,814,000  
Net2Edge [Member]      
Segment Reporting Information [Line Items]      
Sales 424,000 448,000  
Cost of sales 214,000 227,000  
Gross profit 210,000 221,000  
Selling, general and administrative expenses 593,000 748,000  
Operating loss from continuing operations (383,000) (527,000)  
Other income (expense) 14,000 (1,000)  
Operating loss from continuing operations before income taxes (369,000) (528,000)  
Depreciation and amortization 17,000 20,000  
Capital expenditures 2,000 7,000  
Assets 2,578,000 2,863,000  
Other [Member]      
Segment Reporting Information [Line Items]      
Sales    
Cost of sales    
Gross profit    
Selling, general and administrative expenses 936,000 844,000  
Operating loss from continuing operations (936,000) (844,000)  
Other income (expense) 397,000 36,000  
Operating loss from continuing operations before income taxes (539,000) (808,000)  
Depreciation and amortization 127,000 152,000  
Capital expenditures 14,000 167,000  
Assets $ 39,807,000 $ 27,873,000