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Revenue (Tables) | 12 Months Ended
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Dec. 31, 2018
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue [Table Text Block] | The following table presents the Company’s disaggregated net sales by primary end market served (dollars in thousands):
|  | Year ended December 31,
Customer End Markets |  | 2018 |  | 2017 |  | 2016
Consumer |  | $ | 276,740 |  |  | $ | 259,470 |  |  | $ | 259,390 |
Aerospace |  | 185,920 |  |  | 184,310 |  |  | 174,920 |
Industrial |  | 212,160 |  |  | 189,550 |  |  | 182,280 |
Oil and gas |  | 202,320 |  |  | 184,410 |  |  | 177,430 |
Total net sales |  | $ | 877,140 |  |  | $ | 817,740 |  |  | $ | 794,020 |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 + Details
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