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Revenue Recognition Disaggregated Revenue (Tables) | 6 Months Ended
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Jun. 30, 2018
Disaggregation of Revenue [Abstract] |
Disaggregation of Revenue [Table Text Block] | The following table presents revenues disaggregated by the major markets we serve:
| Three Months Ended |  | Six Months Ended
| June 30, 2018 |  | June 30, 2017 |  | June 30, 2018 |  | June 30, 2017
Aero & Defense | $ | 6,024 |  |  | $ | 4,675 |  |  | $ | 11,127 |  |  | $ | 9,332 |
Industrial | 22,773 |  |  | 19,214 |  |  | 43,129 |  |  | 36,326 |
Medical | 9,793 |  |  | 7,474 |  |  | 19,034 |  |  | 14,288 |
Telecom & IT | 5,525 |  |  | 5,602 |  |  | 10,050 |  |  | 10,780 |
Transportation | 73,906 |  |  | 68,721 |  |  | 148,211 |  |  | 135,114 |
Total | $ | 118,021 |  |  | $ | 105,686 |  |  | $ | 231,551 |  |  | $ | 205,840 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130545-203045 + Details
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