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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill [Table Text Block] |
| 2016 |  | 2015
Balance at beginning of year | $ | 446,284 |  |  | $ | 444,085 |
Goodwill acquired | 41,308 |  |  | 9,773 |
Foreign currency translation | (11,214 | ) |  | (7,574 | )
Balance at year end | $ | 476,378 |  |  | $ | 446,284 |
Schedule Of Finite Lived And Indefinite Lived Intangible Assets By Major Class [Table Text Block] |
| 2016 |  | 2015
| Gross Amount |  | Accumulated Amortization |  | Intangibles, Net |  | Gross Amount |  | Accumulated Amortization |  | Intangibles, Net
Customer relationships | $ | 147,466 |  |  | $ | (34,672 | ) |  | $ | 112,794 |  |  | $ | 98,175 |  |  | $ | (30,836 | ) |  | $ | 67,339 |
Proven technology and patents | 58,394 |  |  | (35,128 | ) |  | 23,266 |  |  | 52,938 |  |  | (32,444 | ) |  | 20,494 |
Tradenames (finite life) | 4,182 |  |  | (2,514 | ) |  | 1,668 |  |  | 4,200 |  |  | (2,158 | ) |  | 2,042 |
Tradenames (indefinite life) | 28,272 |  |  | — |  |  | 28,272 |  |  | 24,814 |  |  | — |  |  | 24,814 |
Other | 2,871 |  |  | (1,816 | ) |  | 1,055 |  |  | 2,111 |  |  | (1,548 | ) |  | 563 |
| $ | 241,185 |  |  | $ | (74,130 | ) |  | $ | 167,055 |  |  | $ | 182,238 |  |  | $ | (66,986 | ) |  | $ | 115,252 |

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- Definition Tabular disclosure of amortizable intangible assets and the carrying value of intangible assets not subject to amortization, excluding goodwill, in total by major class. A major class is composed of intangible assets that can be grouped together because they are similar, either by nature or by their use in the operations of the company. + References No definition available. + Details
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- References No definition available. + Details
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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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