Segment Information (Schedule of Segment Information) (Details) - USD ($) |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2019 |
Jun. 30, 2018 |
Jun. 30, 2019 |
Jun. 30, 2018 |
Dec. 31, 2018 |
|
| Segment Reporting Information [Line Items] | |||||
| Sales | $ 15,400,076 | $ 15,038,159 | $ 32,123,370 | $ 31,811,844 | |
| Cost of sales | 9,692,074 | 11,053,074 | 19,988,403 | 22,648,140 | |
| Gross profit | 5,708,002 | 3,985,085 | 12,134,967 | 9,163,704 | |
| Selling, general and administrative expenses | 5,972,100 | 6,707,289 | 12,218,430 | 13,860,128 | |
| Operating loss | (264,098) | (2,722,204) | (83,463) | (4,696,424) | |
| Other income (expense) | 3,043,714 | 69,169 | 3,078,225 | 191,115 | |
| Income (Loss) from operations before income taxes | 2,779,616 | (2,653,035) | 2,994,762 | (4,505,309) | |
| Depreciation and amortization | 335,000 | 541,000 | 755,101 | 1,172,556 | |
| Capital expenditures | 33,000 | 348,000 | 260,000 | 612,000 | |
| Assets | 54,075,694 | 54,939,000 | 54,075,694 | 54,939,000 | $ 53,321,164 |
| Intersegment Eliminations [Member] | |||||
| Segment Reporting Information [Line Items] | |||||
| Sales | (269,000) | (263,000) | (614,000) | (490,000) | |
| Cost of sales | (63,000) | (30,000) | (191,000) | (49,000) | |
| Gross profit | (206,000) | (233,000) | (423,000) | (441,000) | |
| Selling, general and administrative expenses | (206,000) | (233,000) | (423,000) | (441,000) | |
| Depreciation and amortization | |||||
| Capital expenditures | |||||
| Assets | (27,000) | (27,000) | (27,000) | (27,000) | |
| Transition Networks [Member] | |||||
| Segment Reporting Information [Line Items] | |||||
| Sales | 9,175,000 | 7,834,000 | 18,065,000 | 16,988,000 | |
| Cost of sales | 5,232,000 | 4,327,000 | 10,368,000 | 9,554,000 | |
| Gross profit | 3,943,000 | 3,507,000 | 7,697,000 | 7,434,000 | |
| Selling, general and administrative expenses | 3,575,000 | 3,266,000 | 7,270,000 | 6,731,000 | |
| Operating loss | 368,000 | 241,000 | 427,000 | 703,000 | |
| Other income (expense) | (1,000) | 6,000 | (1,000) | 4,000 | |
| Income (Loss) from operations before income taxes | 367,000 | 247,000 | 426,000 | 707,000 | |
| Depreciation and amortization | 71,000 | 100,000 | 150,000 | 241,000 | |
| Capital expenditures | 4,000 | 18,000 | 4,000 | 38,000 | |
| Assets | 16,397,000 | 15,058,000 | 16,397,000 | 15,058,000 | |
| Suttle [Member] | |||||
| Segment Reporting Information [Line Items] | |||||
| Sales | 4,747,000 | 5,873,000 | 10,268,000 | 12,846,000 | |
| Cost of sales | 3,280,000 | 5,414,000 | 7,000,000 | 11,012,000 | |
| Gross profit | 1,467,000 | 459,000 | 3,268,000 | 1,834,000 | |
| Selling, general and administrative expenses | 938,000 | 1,903,000 | 1,996,000 | 3,877,000 | |
| Operating loss | 529,000 | (1,444,000) | 1,272,000 | (2,043,000) | |
| Other income (expense) | 2,980,000 | (4,000) | 2,989,000 | 20,000 | |
| Income (Loss) from operations before income taxes | 3,509,000 | (1,448,000) | 4,261,000 | (2,023,000) | |
| Depreciation and amortization | 220,000 | 386,000 | 513,000 | 799,000 | |
| Capital expenditures | 232,000 | 16,000 | 459,000 | ||
| Assets | 9,747,000 | 15,748,000 | 9,747,000 | 15,748,000 | |
| JDL Technologies [Member] | |||||
| Segment Reporting Information [Line Items] | |||||
| Sales | 951,000 | 913,000 | 3,160,000 | 1,622,000 | |
| Cost of sales | 700,000 | 841,000 | 2,040,000 | 1,568,000 | |
| Gross profit | 251,000 | 72,000 | 1,120,000 | 54,000 | |
| Selling, general and administrative expenses | 331,000 | 422,000 | 707,000 | 845,000 | |
| Operating loss | (80,000) | (350,000) | 413,000 | (791,000) | |
| Other income (expense) | 3,000 | (10,000) | 3,000 | ||
| Income (Loss) from operations before income taxes | (80,000) | (347,000) | 403,000 | (788,000) | |
| Depreciation and amortization | 26,000 | 41,000 | 54,000 | 105,000 | |
| Capital expenditures | 36,000 | ||||
| Assets | 1,658,000 | 912,000 | 1,658,000 | 912,000 | |
| Net2Edge [Member] | |||||
| Segment Reporting Information [Line Items] | |||||
| Sales | 796,000 | 681,000 | 1,244,000 | 846,000 | |
| Cost of sales | 543,000 | 501,000 | 771,000 | 563,000 | |
| Gross profit | 253,000 | 180,000 | 473,000 | 283,000 | |
| Selling, general and administrative expenses | 760,000 | 820,000 | 1,508,000 | 1,724,000 | |
| Operating loss | (507,000) | (640,000) | (1,035,000) | (1,441,000) | |
| Other income (expense) | 3,000 | 20,000 | 2,000 | 12,000 | |
| Income (Loss) from operations before income taxes | (504,000) | (620,000) | (1,033,000) | (1,429,000) | |
| Depreciation and amortization | 18,000 | 14,000 | 38,000 | 28,000 | |
| Capital expenditures | 1,000 | 98,000 | 8,000 | 115,000 | |
| Assets | 3,024,000 | 2,468,000 | 3,024,000 | 2,468,000 | |
| Other [Member] | |||||
| Segment Reporting Information [Line Items] | |||||
| Sales | |||||
| Cost of sales | |||||
| Gross profit | |||||
| Selling, general and administrative expenses | 574,000 | 529,000 | 1,160,000 | 1,124,000 | |
| Operating loss | (574,000) | (529,000) | (1,160,000) | (1,124,000) | |
| Other income (expense) | 62,000 | 44,000 | 98,000 | 152,000 | |
| Income (Loss) from operations before income taxes | (512,000) | (485,000) | (1,062,000) | (972,000) | |
| Depreciation and amortization | |||||
| Capital expenditures | 28,000 | 196,000 | |||
| Assets | $ 23,276,000 | $ 20,780,000 | $ 23,276,000 | $ 20,780,000 | |