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Segment Information (Schedule Of Segment Information) (Details) (USD $) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2014 | Mar. 31, 2013 | Dec. 31, 2013
Segment Reporting Information [Line Items] |  |  |
Sales | $ 25,198,406 | $ 27,452,731 |
Cost of sales | 16,210,390 | 17,676,804 |
Gross profit | 8,988,016 | 9,775,927 |
Selling, general and administrative expenses | 9,002,112 | 9,405,150 |
Restructuring expense | 237,838 |  |
Operating income (loss) | (251,934) | 370,777 |
Depreciation and amortization | 560,622 | 485,793 |
Capital expenditures | 823,633 | 479,129 |
Assets | 101,073,202 | 111,069,600 | 103,532,741
Suttle [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Sales | 12,882,331 | 12,412,188 |
Cost of sales | 9,392,136 | 9,096,683 |
Gross profit | 3,490,195 | 3,315,505 |
Selling, general and administrative expenses | 3,137,649 | 2,628,244 |
Operating income (loss) | 352,546 | 687,261 |
Depreciation and amortization | 293,171 | 243,353 |
Capital expenditures | 626,911 | 164,402 |
Assets | 32,608,313 | 26,834,977 |
Transition Networks [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Sales | 9,749,381 | 10,813,121 |
Cost of sales | 5,042,970 | 5,092,291 |
Gross profit | 4,706,411 | 5,720,830 |
Selling, general and administrative expenses | 5,179,759 | 6,044,659 |
Restructuring expense | 237,838 |  |
Operating income (loss) | (711,186) | (323,829) |
Depreciation and amortization | 230,714 | 210,954 |
Capital expenditures | 107,413 | 131,354 |
Assets | 27,092,762 | 31,484,025 |
JDL Technologies [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Sales | 2,566,694 | 4,227,422 |
Cost of sales | 1,775,284 | 3,487,830 |
Gross profit | 791,410 | 739,592 |
Selling, general and administrative expenses | 684,704 | 732,247 |
Operating income (loss) | 106,706 | 7,345 |
Depreciation and amortization | 36,737 | 31,486 |
Capital expenditures | 9,756 | 15,361 |
Assets | 6,346,670 | 14,551,382 |
Other [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Capital expenditures | 79,553 | 168,012 |
Assets | $ 35,025,457 | $ 38,199,216 |

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