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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill [Table Text Block] |
| 2019 |  | 2018
Balance at beginning of year | $ | 534,780 |  |  | $ | 539,838 |
Goodwill acquired | — |  |  | 558 |
Foreign currency translation | 1,199 |  |  | (5,616 | )
Balance at year end | $ | 535,979 |  |  | $ | 534,780 |
Schedule Of Finite Lived And Indefinite Lived Intangible Assets By Major Class [Table Text Block] |
| 2019 |  | 2018
| Gross Amount |  | Accumulated Amortization |  | Intangibles, Net |  | Gross Amount |  | Accumulated Amortization |  | Intangibles, Net
Customer relationships | $ | 197,764 |  |  | $ | (58,851 | ) |  | $ | 138,913 |  |  | $ | 197,942 |  |  | $ | (49,887 | ) |  | $ | 148,055 |
Proven technology and patents | 75,170 |  |  | (46,532 | ) |  | 28,638 |  |  | 73,880 |  |  | (42,750 | ) |  | 31,130 |
Tradenames (finite life) | 4,594 |  |  | (3,124 | ) |  | 1,470 |  |  | 4,504 |  |  | (2,874 | ) |  | 1,630 |
Tradenames (indefinite life) | 35,474 |  |  | — |  |  | 35,474 |  |  | 35,500 |  |  | — |  |  | 35,500 |
Other | 5,462 |  |  | (3,715 | ) |  | 1,747 |  |  | 3,684 |  |  | (2,691 | ) |  | 993 |
| $ | 318,464 |  |  | $ | (112,222 | ) |  | $ | 206,242 |  |  | $ | 315,510 |  |  | $ | (98,202 | ) |  | $ | 217,308 |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13854-109267 + Details
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