Segment Information (Schedule Of Segment Information) (Details) - USD ($) |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Sep. 30, 2015 |
Sep. 30, 2014 |
Sep. 30, 2015 |
Sep. 30, 2014 |
Dec. 31, 2014 |
|
| Segment Reporting Information [Line Items] | |||||
| Sales | $ 32,246,166 | $ 33,433,924 | $ 79,988,763 | $ 91,841,307 | |
| Cost of sales | 21,822,331 | 21,421,424 | 56,139,121 | 58,747,022 | |
| Gross profit | 10,424,000 | 12,013,000 | 23,850,000 | 33,094,000 | |
| Selling, general and administrative expenses | 9,992,444 | 9,354,599 | 30,827,158 | 28,044,957 | |
| Restructuring expense | 0 | 0 | 237,838 | ||
| Operating (loss) income | 431,391 | 2,657,901 | (6,977,516) | 4,811,490 | |
| Depreciation and amortization | 842,000 | 614,000 | 2,476,244 | 1,756,792 | |
| Capital expenditures | 127,000 | 1,525,000 | 1,783,000 | 3,988,000 | |
| Assets | 98,610,970 | 102,577,000 | 98,610,970 | 102,577,000 | $ 100,286,235 |
| Intersegment Eliminations [Member] | |||||
| Segment Reporting Information [Line Items] | |||||
| Sales | (181,000) | (404,000) | |||
| Gross profit | (181,000) | (404,000) | |||
| Selling, general and administrative expenses | (181,000) | (404,000) | |||
| Suttle [Member] | |||||
| Segment Reporting Information [Line Items] | |||||
| Sales | 15,091,000 | 19,938,000 | 37,469,000 | 51,826,000 | |
| Cost of sales | 12,000,000 | 13,470,000 | 30,682,000 | 35,594,000 | |
| Gross profit | 3,091,000 | 6,468,000 | 6,787,000 | 16,232,000 | |
| Selling, general and administrative expenses | 3,870,000 | 3,644,000 | 11,680,000 | 10,139,000 | |
| Operating (loss) income | (779,000) | 2,824,000 | (4,893,000) | 6,093,000 | |
| Depreciation and amortization | 539,000 | 332,000 | 1,592,000 | 940,000 | |
| Capital expenditures | 67,000 | 1,263,000 | 1,235,000 | 3,128,000 | |
| Assets | 41,588,000 | 39,398,000 | 41,588,000 | 39,398,000 | |
| Transition Networks [Member] | |||||
| Segment Reporting Information [Line Items] | |||||
| Sales | 12,354,000 | 11,272,000 | 32,359,000 | 32,589,000 | |
| Cost of sales | 6,616,000 | 6,283,000 | 17,809,000 | 17,508,000 | |
| Gross profit | 5,738,000 | 4,989,000 | 14,550,000 | 15,081,000 | |
| Selling, general and administrative expenses | 5,448,000 | 5,032,000 | 16,830,000 | 15,821,000 | |
| Restructuring expense | 238,000 | ||||
| Operating (loss) income | 290,000 | (43,000) | (2,280,000) | (978,000) | |
| Depreciation and amortization | 264,000 | 243,000 | 778,000 | 704,000 | |
| Capital expenditures | 34,000 | 88,000 | 247,000 | 453,000 | |
| Assets | 27,176,000 | 26,653,000 | 27,176,000 | 26,653,000 | |
| JDL Technologies [Member] | |||||
| Segment Reporting Information [Line Items] | |||||
| Sales | 4,982,000 | 2,224,000 | 10,565,000 | 7,426,000 | |
| Cost of sales | 3,206,000 | 1,668,000 | 7,648,000 | 5,645,000 | |
| Gross profit | 1,776,000 | 556,000 | 2,917,000 | 1,781,000 | |
| Selling, general and administrative expenses | 856,000 | 679,000 | 2,722,000 | 2,085,000 | |
| Operating (loss) income | 920,000 | (123,000) | 195,000 | (304,000) | |
| Depreciation and amortization | 39,000 | 39,000 | 106,000 | 113,000 | |
| Capital expenditures | 16,000 | 5,000 | 187,000 | 23,000 | |
| Assets | 6,792,000 | 2,764,000 | 6,792,000 | 2,764,000 | |
| Other [Member] | |||||
| Segment Reporting Information [Line Items] | |||||
| Capital expenditures | 10,000 | 169,000 | 114,000 | 384,000 | |
| Assets | $ 23,055,000 | $ 33,762,000 | $ 23,055,000 | $ 33,762,000 | |