Segment Information (Schedule Of Segment Information) (Details) - USD ($) |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2017 |
Jun. 30, 2016 |
Jun. 30, 2017 |
Jun. 30, 2016 |
Dec. 31, 2016 |
|
| Segment Reporting Information [Line Items] | |||||
| Sales | $ 22,068,462 | $ 26,311,442 | $ 42,868,541 | $ 50,977,886 | |
| Cost of sales | 16,057,822 | 18,935,699 | 30,892,836 | 36,833,125 | |
| Gross profit | 6,010,640 | 7,375,743 | 11,975,705 | 14,144,761 | |
| Selling, general and administrative expenses | 7,318,047 | 10,047,201 | 14,355,302 | 19,684,262 | |
| Impairment loss | 1,617,389 | 1,617,389 | |||
| Pension liability adjustment gains | (4,147,836) | ||||
| Restructuring expense | 1,141,992 | 1,529,630 | |||
| Operating loss | (4,066,788) | (2,671,458) | (5,526,616) | (1,391,665) | |
| Depreciation and amortization | 849,000 | 943,000 | 1,722,382 | 1,833,848 | |
| Capital expenditures | 100,000 | 465,000 | 138,000 | 1,271,000 | |
| Assets | 67,642,191 | 85,946,000 | 67,642,191 | 85,946,000 | $ 73,177,016 |
| Intersegment Eliminations [Member] | |||||
| Segment Reporting Information [Line Items] | |||||
| Sales | (218,000) | (321,000) | (416,000) | (655,000) | |
| Cost of sales | (20,000) | (50,000) | (22,000) | (142,000) | |
| Gross profit | (198,000) | (271,000) | (394,000) | (513,000) | |
| Selling, general and administrative expenses | (198,000) | (268,000) | (394,000) | (494,000) | |
| Operating loss | (3,000) | (19,000) | |||
| Depreciation and amortization | |||||
| Capital expenditures | (3,000) | (19,000) | |||
| Assets | (27,000) | (26,000) | (27,000) | (26,000) | |
| Suttle [Member] | |||||
| Segment Reporting Information [Line Items] | |||||
| Sales | 8,580,000 | 11,216,000 | 17,352,000 | 23,005,000 | |
| Cost of sales | 7,767,000 | 10,116,000 | 15,480,000 | 19,860,000 | |
| Gross profit | 813,000 | 1,100,000 | 1,872,000 | 3,145,000 | |
| Selling, general and administrative expenses | 2,325,000 | 3,661,000 | 4,536,000 | 7,147,000 | |
| Restructuring expense | 1,142,000 | 1,530,000 | |||
| Operating loss | (2,654,000) | (2,561,000) | (4,194,000) | (4,002,000) | |
| Depreciation and amortization | 579,000 | 616,000 | 1,170,000 | 1,192,000 | |
| Capital expenditures | 25,000 | 342,000 | 48,000 | 821,000 | |
| Assets | 31,292,000 | 39,811,000 | 31,292,000 | 39,811,000 | |
| Transition Networks [Member] | |||||
| Segment Reporting Information [Line Items] | |||||
| Sales | 9,500,000 | 10,175,000 | 18,504,000 | 18,506,000 | |
| Cost of sales | 5,206,000 | 5,773,000 | 10,325,000 | 10,920,000 | |
| Gross profit | 4,294,000 | 4,402,000 | 8,179,000 | 7,586,000 | |
| Selling, general and administrative expenses | 3,933,000 | 4,762,000 | 7,672,000 | 9,401,000 | |
| Operating loss | 361,000 | (360,000) | 507,000 | (1,815,000) | |
| Depreciation and amortization | 173,000 | 232,000 | 360,000 | 453,000 | |
| Capital expenditures | 25,000 | 75,000 | 25,000 | 160,000 | |
| Assets | 15,262,000 | 19,798,000 | 15,262,000 | 19,798,000 | |
| JDL Technologies [Member] | |||||
| Segment Reporting Information [Line Items] | |||||
| Sales | 4,026,000 | 4,650,000 | 6,891,000 | 8,963,000 | |
| Cost of sales | 3,065,000 | 2,783,000 | 4,969,000 | 5,641,000 | |
| Gross profit | 961,000 | 1,867,000 | 1,922,000 | 3,322,000 | |
| Selling, general and administrative expenses | 557,000 | 961,000 | 1,133,000 | 1,968,000 | |
| Impairment loss | 1,463,000 | 1,463,000 | |||
| Restructuring expense | |||||
| Operating loss | (1,059,000) | 906,000 | (674,000) | 1,354,000 | |
| Depreciation and amortization | 77,000 | 63,000 | 154,000 | 124,000 | |
| Capital expenditures | 3,000 | 9,000 | 5,000 | 84,000 | |
| Assets | 4,122,000 | 5,911,000 | 4,122,000 | 5,911,000 | |
| Net2Edge [Member] | |||||
| Segment Reporting Information [Line Items] | |||||
| Sales | 180,000 | 591,000 | 537,000 | 1,159,000 | |
| Cost of sales | 40,000 | 314,000 | 140,000 | 554,000 | |
| Gross profit | 140,000 | 277,000 | 397,000 | 605,000 | |
| Selling, general and administrative expenses | 701,000 | 931,000 | 1,408,000 | 1,662,000 | |
| Impairment loss | 154,000 | 154,000 | |||
| Operating loss | (715,000) | (654,000) | (1,165,000) | (1,057,000) | |
| Depreciation and amortization | 20,000 | 32,000 | 38,000 | 65,000 | |
| Capital expenditures | 43,000 | 2,000 | 60,000 | 2,000 | |
| Assets | 1,294,000 | 1,670,000 | 1,294,000 | 1,670,000 | |
| Other [Member] | |||||
| Segment Reporting Information [Line Items] | |||||
| Sales | |||||
| Cost of sales | |||||
| Gross profit | |||||
| Selling, general and administrative expenses | |||||
| Pension liability adjustment gains | (4,148,000) | ||||
| Restructuring expense | |||||
| Operating loss | 4,148,000 | ||||
| Depreciation and amortization | |||||
| Capital expenditures | 4,000 | 40,000 | 223,000 | ||
| Assets | $ 15,699,000 | $ 18,782,000 | $ 15,699,000 | $ 18,782,000 | |