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Information Concerning Industry Segments And Major Customers (Schedule Of Segment Information) (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales | $ 27,681,000 | $ 32,246,000 | $ 28,198,000 | $ 19,545,000 | $ 27,230,000 | $ 33,434,000 | $ 33,209,000 | $ 25,198,000 | $ 107,669,524 | $ 119,071,439 | $ 131,319,510
Cost of sales |  |  |  |  |  |  |  |  | 76,123,362 | 76,912,881 | 86,420,982
Gross profit | 7,696,000 | 10,424,000 | 8,539,000 | 4,887,000 | 9,064,000 | 12,013,000 | 12,094,000 | 8,988,000 | 31,546,000 | 42,159,000 | 44,899,000
Selling, general and administrative expenses |  |  |  |  |  |  |  |  | 40,829,755 | 38,627,801 | 36,742,869
Pension settlement costs |  |  |  |  |  |  |  |  | 1,222,276 |  |
Impairment |  |  |  |  |  |  |  |  |  |  | 5,849,853
Restructuring expense |  |  |  |  |  |  |  |  | 0 | 237,838 | 1,149,439
Operating (loss) income | (3,528,000) | $ 431,000 | $ (1,718,000) | $ (5,691,000) | (1,519,000) | $ 2,658,000 | $ 2,406,000 | $ (252,000) | (10,505,869) | 3,292,919 | 1,156,367
Depreciation and amortization |  |  |  |  |  |  |  |  | 3,312,587 | 2,482,300 | 2,184,830
Capital expenditures |  |  |  |  |  |  |  |  | 2,394,000 | 5,577,000 | 2,699,000
Assets | 87,916,230 |  |  |  | 100,286,235 |  |  |  | 87,916,230 | 100,286,235 | 103,533,000
Intersegment Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | (654,000) |  |
Cost of sales |  |  |  |  |  |  |  |  | (62,000) |  |
Gross profit |  |  |  |  |  |  |  |  | (592,000) |  |
Selling, general and administrative expenses |  |  |  |  |  |  |  |  | (585,000) |  |
Operating (loss) income |  |  |  |  |  |  |  |  | (7,000) |  |
Capital expenditures |  |  |  |  |  |  |  |  | (7,000) |  |
Assets | (7,000) |  |  |  |  |  |  |  | (7,000) |  |
Suttle [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 50,082,000 | 67,331,000 | 54,346,000
Cost of sales |  |  |  |  |  |  |  |  | 41,232,000 | 46,339,000 | 38,535,000
Gross profit |  |  |  |  |  |  |  |  | 8,850,000 | 20,992,000 | 15,811,000
Selling, general and administrative expenses |  |  |  |  |  |  |  |  | 15,285,000 | 14,389,000 | 11,869,000
Restructuring expense |  |  |  |  |  |  |  |  |  |  | 226,000
Operating (loss) income |  |  |  |  |  |  |  |  | (6,435,000) | 6,603,000 | 3,716,000
Depreciation and amortization |  |  |  |  |  |  |  |  | 2,125,000 | 1,386,000 | 1,044,000
Capital expenditures |  |  |  |  |  |  |  |  | 1,710,000 | 4,471,000 | 1,215,000
Assets | 38,163,000 |  |  |  | 38,083,000 |  |  |  | 38,163,000 | 38,083,000 | 30,637,000
Transition Networks [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 42,570,000 | 43,174,000 | 43,857,000
Cost of sales |  |  |  |  |  |  |  |  | 24,088,000 | 23,975,000 | 21,438,000
Gross profit |  |  |  |  |  |  |  |  | 18,482,000 | 19,199,000 | 22,419,000
Selling, general and administrative expenses |  |  |  |  |  |  |  |  | 22,495,000 | 21,393,000 | 21,581,000
Impairment |  |  |  |  |  |  |  |  |  |  | 5,850,000
Restructuring expense |  |  |  |  |  |  |  |  |  | 238,000 | 779,000
Operating (loss) income |  |  |  |  |  |  |  |  | (4,013,000) | (2,432,000) | (5,791,000)
Depreciation and amortization |  |  |  |  |  |  |  |  | 1,038,000 | 944,000 | 970,000
Capital expenditures |  |  |  |  |  |  |  |  | 313,000 | 589,000 | 919,000
Assets | 23,512,000 |  |  |  | 26,508,000 |  |  |  | 23,512,000 | 26,508,000 | 29,440,000
JDL Technologies [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Sales |  |  |  |  |  |  |  |  | 15,672,000 | 8,567,000 | 33,117,000
Cost of sales |  |  |  |  |  |  |  |  | 10,866,000 | 6,599,000 | 26,448,000
Gross profit |  |  |  |  |  |  |  |  | 4,806,000 | 1,968,000 | 6,669,000
Selling, general and administrative expenses |  |  |  |  |  |  |  |  | 3,635,000 | 2,846,000 | 3,292,000
Restructuring expense |  |  |  |  |  |  |  |  |  |  | 145,000
Operating (loss) income |  |  |  |  |  |  |  |  | 1,171,000 | (878,000) | 3,232,000
Depreciation and amortization |  |  |  |  |  |  |  |  | 150,000 | 152,000 | 171,000
Capital expenditures |  |  |  |  |  |  |  |  | 263,000 | 43,000 | 46,000
Assets | 5,964,000 |  |  |  | 3,816,000 |  |  |  | 5,964,000 | 3,816,000 | 11,350,000
Other [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Pension settlement costs |  |  |  |  |  |  |  |  | 1,222,000 |  |
Operating (loss) income |  |  |  |  |  |  |  |  | (1,222,000) |  |
Capital expenditures |  |  |  |  |  |  |  |  | 115,000 | 474,000 | 519,000
Assets | $ 20,284,000 |  |  |  | $ 31,879,000 |  |  |  | $ 20,284,000 | $ 31,879,000 | $ 32,106,000

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