Quarterly report pursuant to Section 13 or 15(d)

Segment Information (Schedule of Segment Information) (Details)

v3.19.1
Segment Information (Schedule of Segment Information) (Details) - USD ($)
 3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Segment Reporting Information [Line Items]      
Sales $ 16,723,294 $ 16,773,685  
Cost of sales 10,296,329 11,595,066  
Gross profit 6,426,965 5,178,619  
Selling, general and administrative expenses 6,246,330 7,152,840  
Operating income (loss) 180,635 (1,974,221)  
Other income (expense) 34,511 121,946  
Income (Loss) from operations before income taxes 215,146 (1,852,275)  
Depreciation and amortization 421,563 631,512  
Capital expenditures 226,000 264,000  
Assets 52,191,121 57,736,000 $ 53,321,164
Intersegment Eliminations [Member]      
Segment Reporting Information [Line Items]      
Sales (344,000) (227,000)  
Cost of sales (128,000) (19,000)  
Gross profit (216,000) (208,000)  
Selling, general and administrative expenses (216,000) (208,000)  
Depreciation and amortization    
Capital expenditures    
Assets (27,000) (27,000)  
Transition Networks [Member]      
Segment Reporting Information [Line Items]      
Sales 8,890,000 9,153,000  
Cost of sales 5,136,000 5,226,000  
Gross profit 3,754,000 3,927,000  
Selling, general and administrative expenses 3,695,000 3,466,000  
Operating income (loss) 59,000 461,000  
Other income (expense)   (2,000)  
Income (Loss) from operations before income taxes 59,000 459,000  
Depreciation and amortization 79,000 141,000  
Capital expenditures 20,000  
Assets 17,668,000 13,813,000  
Suttle [Member]      
Segment Reporting Information [Line Items]      
Sales 5,521,000 6,973,000  
Cost of sales 3,720,000 5,598,000  
Gross profit 1,801,000 1,375,000  
Selling, general and administrative expenses 1,058,000 1,975,000  
Operating income (loss) 743,000 (600,000)  
Other income (expense) 9,000 24,000  
Income (Loss) from operations before income taxes 752,000 (576,000)  
Depreciation and amortization 295,000 414,000  
Capital expenditures 16,000 227,000  
Assets 12,236,000 17,025,000  
JDL Technologies [Member]      
Segment Reporting Information [Line Items]      
Sales 2,208,000 710,000  
Cost of sales 1,341,000 728,000  
Gross profit 867,000 (18,000)  
Selling, general and administrative expenses 376,000 424,000  
Operating income (loss) 491,000 (442,000)  
Other income (expense) (10,000)    
Income (Loss) from operations before income taxes 481,000 (442,000)  
Depreciation and amortization 28,000 63,000  
Capital expenditures 36,000    
Assets 3,814,000 1,243,000  
Net2Edge [Member]      
Segment Reporting Information [Line Items]      
Sales 448,000 165,000  
Cost of sales 227,000 62,000  
Gross profit 221,000 103,000  
Selling, general and administrative expenses 748,000 904,000  
Operating income (loss) (527,000) (801,000)  
Other income (expense) (1,000) (8,000)  
Income (Loss) from operations before income taxes (528,000) (809,000)  
Depreciation and amortization 20,000 14,000  
Capital expenditures 7,000 17,000  
Assets 2,863,000 1,732,000  
Other [Member]      
Segment Reporting Information [Line Items]      
Sales    
Cost of sales    
Gross profit    
Selling, general and administrative expenses 585,000 592,000  
Operating income (loss) (585,000) (592,000)  
Other income (expense) 36,000 108,000  
Income (Loss) from operations before income taxes (549,000) (484,000)  
Depreciation and amortization  
Capital expenditures 167,000  
Assets $ 15,637,000 $ 23,950,000