Segment Information (Schedule Of Segment Information) (Details) - USD ($) |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
Dec. 31, 2015 |
|
| Segment Reporting Information [Line Items] | |||||
| Sales | $ 25,616,640 | $ 32,246,166 | $ 76,594,526 | $ 79,988,763 | |
| Cost of sales | 18,926,042 | 21,822,331 | 55,759,167 | 56,139,121 | |
| Gross profit | 6,691,000 | 10,424,000 | 20,835,000 | 23,850,000 | |
| Selling, general and administrative expenses | 7,866,009 | 9,992,444 | 27,550,271 | 30,827,158 | |
| Pension liability adjustment gains | (4,147,836) | ||||
| Operating (loss) income | (1,175,411) | 431,391 | (2,567,076) | (6,977,516) | |
| Depreciation and amortization | 920,000 | 842,000 | 2,754,189 | 2,476,244 | |
| Capital expenditures | 618,000 | 127,000 | 1,946,000 | 1,783,000 | |
| Assets | 76,471,515 | 98,611,000 | 76,471,515 | 98,611,000 | $ 87,916,230 |
| Intersegment Eliminations [Member] | |||||
| Segment Reporting Information [Line Items] | |||||
| Sales | (264,000) | (262,000) | (918,000) | (533,000) | |
| Cost of sales | (16,000) | (81,000) | (157,000) | (129,000) | |
| Gross profit | (248,000) | (181,000) | (761,000) | (404,000) | |
| Selling, general and administrative expenses | (248,000) | (181,000) | (742,000) | (404,000) | |
| Operating (loss) income | (19,000) | ||||
| Capital expenditures | (19,000) | ||||
| Assets | (26,000) | (26,000) | |||
| Suttle [Member] | |||||
| Segment Reporting Information [Line Items] | |||||
| Sales | 10,420,000 | 15,091,000 | 33,424,000 | 37,469,000 | |
| Cost of sales | 10,080,000 | 12,000,000 | 29,939,000 | 30,682,000 | |
| Gross profit | 340,000 | 3,091,000 | 3,485,000 | 6,787,000 | |
| Selling, general and administrative expenses | 2,891,000 | 3,870,000 | 10,038,000 | 11,680,000 | |
| Operating (loss) income | (2,551,000) | (779,000) | (6,553,000) | (4,893,000) | |
| Depreciation and amortization | 627,000 | 539,000 | 1,819,000 | 1,592,000 | |
| Capital expenditures | 536,000 | 67,000 | 1,414,000 | 1,235,000 | |
| Assets | 36,830,000 | 41,588,000 | 36,830,000 | 41,588,000 | |
| Transition Networks [Member] | |||||
| Segment Reporting Information [Line Items] | |||||
| Sales | 11,789,000 | 11,897,000 | 30,294,000 | 31,415,000 | |
| Cost of sales | 6,350,000 | 6,447,000 | 17,270,000 | 17,485,000 | |
| Gross profit | 5,439,000 | 5,450,000 | 13,024,000 | 13,930,000 | |
| Selling, general and administrative expenses | 3,824,000 | 4,552,000 | 13,224,000 | 14,284,000 | |
| Operating (loss) income | 1,615,000 | 898,000 | (200,000) | (354,000) | |
| Depreciation and amortization | 205,000 | 229,000 | 658,000 | 673,000 | |
| Capital expenditures | 26,000 | 34,000 | 185,000 | 226,000 | |
| Assets | 17,758,000 | 25,636,000 | 17,758,000 | 25,636,000 | |
| JDL Technologies [Member] | |||||
| Segment Reporting Information [Line Items] | |||||
| Sales | 3,397,000 | 4,982,000 | 12,360,000 | 10,565,000 | |
| Cost of sales | 2,384,000 | 3,206,000 | 8,025,000 | 7,648,000 | |
| Gross profit | 1,013,000 | 1,776,000 | 4,335,000 | 2,917,000 | |
| Selling, general and administrative expenses | 563,000 | 856,000 | 2,531,000 | 2,722,000 | |
| Operating (loss) income | 450,000 | 920,000 | 1,804,000 | 195,000 | |
| Depreciation and amortization | 65,000 | 39,000 | 189,000 | 106,000 | |
| Capital expenditures | 44,000 | 16,000 | 128,000 | 187,000 | |
| Assets | 3,729,000 | 6,792,000 | 3,729,000 | 6,792,000 | |
| Net2Edge [Member] | |||||
| Segment Reporting Information [Line Items] | |||||
| Sales | 275,000 | 538,000 | 1,434,000 | 1,073,000 | |
| Cost of sales | 128,000 | 250,000 | 682,000 | 453,000 | |
| Gross profit | 147,000 | 288,000 | 752,000 | 620,000 | |
| Selling, general and administrative expenses | 836,000 | 896,000 | 2,499,000 | 2,546,000 | |
| Operating (loss) income | (689,000) | (608,000) | (1,747,000) | (1,926,000) | |
| Depreciation and amortization | 23,000 | 35,000 | 88,000 | 105,000 | |
| Capital expenditures | 12,000 | 18,000 | 21,000 | ||
| Assets | 1,488,000 | 1,540,000 | 1,488,000 | 1,540,000 | |
| Other [Member] | |||||
| Segment Reporting Information [Line Items] | |||||
| Pension liability adjustment gains | (4,148,000) | ||||
| Operating (loss) income | 4,148,000 | ||||
| Capital expenditures | 10,000 | 220,000 | 114,000 | ||
| Assets | $ 16,692,000 | $ 23,055,000 | $ 16,692,000 | $ 23,055,000 | |