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Goodwill and Other Intangible Assets Schedule of Intangible Assets (excluding Goodwill) by Major Class (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2018 | Dec. 31, 2017
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-lived intangible assets, accumulated amortization | $ (164,740) | $ (155,490)
Intangible Assets, Gross (Excluding Goodwill) | 349,030 | 349,710
Trademarks and Trade Names [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Indefinite-lived intangible assets, gross carrying amount | 42,930 | 42,930
Customer Relationships [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-lived intangible assets, gross carrying amount | 205,770 | 206,140
Finite-lived intangible assets, accumulated amortization | (99,990) | (92,880)
Technology and Other [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-lived intangible assets, gross carrying amount | 100,330 | 100,640
Finite-lived intangible assets, accumulated amortization | (64,750) | (62,610)
Useful Life Five to Twelve Years [Member] | Customer Relationships [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-lived intangible assets, gross carrying amount | 73,540 | 73,910
Finite-lived intangible assets, accumulated amortization | (44,660) | (41,000)
Useful Life Fifteen to Twentyfive Years [Member] | Customer Relationships [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-lived intangible assets, gross carrying amount | 132,230 | 132,230
Finite-lived intangible assets, accumulated amortization | (55,330) | (51,880)
Useful Life One to Fifteen Years [Member] | Technology and Other [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-lived intangible assets, gross carrying amount | 57,030 | 57,340
Finite-lived intangible assets, accumulated amortization | (30,200) | (29,120)
Useful Life Seventeen to Thirty Years [Member] | Technology and Other [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-lived intangible assets, gross carrying amount | 43,300 | 43,300
Finite-lived intangible assets, accumulated amortization | $ (34,550) | $ (33,490)
Minimum [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-Lived Intangible Assets, Useful Life | 1 year |
Minimum [Member] | Useful Life Five to Twelve Years [Member] | Customer Relationships [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-Lived Intangible Assets, Useful Life | 5 years |
Minimum [Member] | Useful Life Fifteen to Twentyfive Years [Member] | Customer Relationships [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-Lived Intangible Assets, Useful Life | 15 years |
Minimum [Member] | Useful Life One to Fifteen Years [Member] | Technology and Other [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-Lived Intangible Assets, Useful Life | 1 year |
Minimum [Member] | Useful Life Seventeen to Thirty Years [Member] | Technology and Other [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-Lived Intangible Assets, Useful Life | 17 years |
Maximum [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-Lived Intangible Assets, Useful Life | 30 years |
Maximum [Member] | Useful Life Five to Twelve Years [Member] | Customer Relationships [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-Lived Intangible Assets, Useful Life | 12 years |
Maximum [Member] | Useful Life Fifteen to Twentyfive Years [Member] | Customer Relationships [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-Lived Intangible Assets, Useful Life | 25 years |
Maximum [Member] | Useful Life One to Fifteen Years [Member] | Technology and Other [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-Lived Intangible Assets, Useful Life | 15 years |
Maximum [Member] | Useful Life Seventeen to Thirty Years [Member] | Technology and Other [Member] |  |
Intangible Assets, excluding Goodwill [Line Items] |  |
Finite-Lived Intangible Assets, Useful Life | 30 years |

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