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Goodwill and Intangible Assets Other Intangible Assets (Details) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2018 | Mar. 31, 2019 | Mar. 31, 2018
Summary of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |  |
Asset Impairment Charges | $ 16,249 |  |
Finite-Lived Intangible Assets, Gross |  | $ 973,357 | $ 1,032,907
Finite-Lived Intangible Assets, Accumulated Amortization |  | 368,743 | 305,927
Customer Relationships [Member] |  |  |
Summary of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Assets, Gross |  | 623,774 | 663,532
Finite-Lived Intangible Assets, Accumulated Amortization |  | 189,752 | 150,358
Noncompete Agreements [Member] |  |  |
Summary of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Assets, Gross |  | 4,693 | 4,738
Finite-Lived Intangible Assets, Accumulated Amortization |  | 3,945 | 3,790
Patented Technology [Member] |  |  |
Summary of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Assets, Gross |  | 226,520 | 226,318
Finite-Lived Intangible Assets, Accumulated Amortization |  | 126,149 | 107,598
Trademarks and Trade Names [Member] |  |  |
Summary of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Assets, Gross |  | 63,570 | 83,509
Finite-Lived Intangible Assets, Accumulated Amortization |  | 38,850 | 36,864
supplier relationships [Member] |  |  |
Summary of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Assets, Gross |  | 54,800 | 54,800
Finite-Lived Intangible Assets, Accumulated Amortization |  | 10,047 | 7,307
Other Intangible Assets [Member] |  |  |
Summary of Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Assets, Gross |  | 0 | 10
Finite-Lived Intangible Assets, Accumulated Amortization |  | $ 0 | $ 10

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