Information Concerning Industry Segments and Major Customers (Schedule of Segment Information) (Details) - USD ($) |
3 Months Ended | 12 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2018 |
Sep. 30, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 31, 2017 |
Sep. 30, 2017 |
Jun. 30, 2017 |
Mar. 31, 2017 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
| Segment Reporting Information [Line Items] | ||||||||||
| Sales | $ 18,659,000 | $ 15,292,000 | $ 15,038,000 | $ 16,774,000 | $ 19,043,000 | $ 20,412,000 | $ 22,068,000 | $ 20,800,000 | $ 65,762,946 | $ 82,322,618 |
| Cost of sales | 44,455,697 | 61,486,379 | ||||||||
| Gross profit | 21,307,249 | 20,836,239 | ||||||||
| Selling, general and administrative expenses | 27,501,691 | 28,699,138 | ||||||||
| Impairment loss | 1,617,389 | |||||||||
| Restructuring expense | 363,676 | 2,284,541 | ||||||||
| Operating loss | (260,000) | $ (1,602,000) | $ (2,722,000) | $ (1,974,000) | (1,584,000) | $ (4,654,000) | $ (4,067,000) | $ (1,460,000) | (6,558,118) | (11,764,829) |
| Other income (expense) | 171,650 | (95,306) | ||||||||
| Loss from operations before income taxes | (6,386,468) | (11,860,135) | ||||||||
| Depreciation and amortization | 2,214,848 | 3,186,458 | ||||||||
| Capital expenditures | 764,000 | 773,000 | ||||||||
| Assets | 53,321,164 | 58,146,261 | 53,321,164 | 58,146,261 | ||||||
| Intersegment Eliminations [Member] | ||||||||||
| Segment Reporting Information [Line Items] | ||||||||||
| Sales | (951,000) | (891,000) | ||||||||
| Cost of sales | (89,000) | (91,000) | ||||||||
| Gross profit | (862,000) | (800,000) | ||||||||
| Selling, general and administrative expenses | (862,000) | (800,000) | ||||||||
| Assets | (27,000) | (27,000) | (27,000) | (27,000) | ||||||
| Transition Networks [Member] | ||||||||||
| Segment Reporting Information [Line Items] | ||||||||||
| Sales | 36,470,000 | 38,541,000 | ||||||||
| Cost of sales | 19,775,000 | 21,779,000 | ||||||||
| Gross profit | 16,695,000 | 16,762,000 | ||||||||
| Selling, general and administrative expenses | 14,812,000 | 15,371,000 | ||||||||
| Operating loss | 1,883,000 | 1,391,000 | ||||||||
| Other income (expense) | (31,000) | 10,000 | ||||||||
| Loss from operations before income taxes | 1,852,000 | 1,401,000 | ||||||||
| Depreciation and amortization | 420,000 | 705,000 | ||||||||
| Capital expenditures | 81,000 | 232,000 | ||||||||
| Assets | 19,228,000 | 12,543,000 | 19,228,000 | 12,543,000 | ||||||
| Suttle [Member] | ||||||||||
| Segment Reporting Information [Line Items] | ||||||||||
| Sales | 23,410,000 | 32,384,000 | ||||||||
| Cost of sales | 19,725,000 | 30,964,000 | ||||||||
| Gross profit | 3,685,000 | 1,420,000 | ||||||||
| Selling, general and administrative expenses | 8,393,000 | 8,900,000 | ||||||||
| Pension liability adjustment gains | 364,000 | 2,285,000 | ||||||||
| Operating loss | (5,072,000) | (9,765,000) | ||||||||
| Other income (expense) | (52,000) | (123,000) | ||||||||
| Loss from operations before income taxes | (5,124,000) | (9,888,000) | ||||||||
| Depreciation and amortization | 1,551,000 | 2,155,000 | ||||||||
| Capital expenditures | 542,000 | 397,000 | ||||||||
| Assets | 12,298,000 | 18,359,000 | 12,298,000 | 18,359,000 | ||||||
| JDL Technologies [Member] | ||||||||||
| Segment Reporting Information [Line Items] | ||||||||||
| Sales | 5,134,000 | 11,210,000 | ||||||||
| Cost of sales | 3,830,000 | 8,437,000 | ||||||||
| Gross profit | 1,304,000 | 2,773,000 | ||||||||
| Selling, general and administrative expenses | 1,879,000 | 2,101,000 | ||||||||
| Impairment loss | 1,463,000 | |||||||||
| Operating loss | (575,000) | (791,000) | ||||||||
| Other income (expense) | 3,000 | |||||||||
| Loss from operations before income taxes | (572,000) | (791,000) | ||||||||
| Depreciation and amortization | 179,000 | 269,000 | ||||||||
| Capital expenditures | 8,000 | |||||||||
| Assets | 2,572,000 | 1,073,000 | 2,572,000 | 1,073,000 | ||||||
| Net2Edge [Member] | ||||||||||
| Segment Reporting Information [Line Items] | ||||||||||
| Sales | 1,700,000 | 1,079,000 | ||||||||
| Cost of sales | 1,215,000 | 398,000 | ||||||||
| Gross profit | 485,000 | 681,000 | ||||||||
| Selling, general and administrative expenses | 3,279,000 | 3,127,000 | ||||||||
| Impairment loss | 154,000 | |||||||||
| Operating loss | (2,794,000) | (2,600,000) | ||||||||
| Other income (expense) | 22,000 | (15,000) | ||||||||
| Loss from operations before income taxes | (2,772,000) | (2,615,000) | ||||||||
| Depreciation and amortization | 65,000 | 57,000 | ||||||||
| Capital expenditures | 127,000 | 69,000 | ||||||||
| Assets | 1,894,000 | 1,229,000 | 1,894,000 | 1,229,000 | ||||||
| Other [Member] | ||||||||||
| Segment Reporting Information [Line Items] | ||||||||||
| Other income (expense) | 230,000 | 33,000 | ||||||||
| Loss from operations before income taxes | 230,000 | 33,000 | ||||||||
| Capital expenditures | 14,000 | 67,000 | ||||||||
| Assets | $ 17,356,000 | $ 24,969,000 | $ 17,356,000 | $ 24,969,000 | ||||||