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Goodwill and Intangible Assets Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items] |  |  |
Government grants | $ 1,055 | $ 8,650 | $ 0
Finite-Lived Intangible Assets, Gross | 146,309 | 178,059 |
Finite-Lived Intangible Assets, Accumulated Amortization | (88,499) | (107,046) |
Amortization expense | 11,873 | 17,333 | $ 17,945
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months | 10,400 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Two | 9,800 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Three | 9,800 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Four | 8,200 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Five | $ 2,100 |  |
Minimum [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 10 years |  |
Maximum [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Asset, Useful Life | 50 years |  |
Unpatented Technology [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Assets, Gross | $ 8,186 | 8,530 |
Finite-Lived Intangible Assets, Accumulated Amortization | (3,132) | (2,660) |
Patents [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Assets, Gross | 1,235 | 7,770 |
Finite-Lived Intangible Assets, Accumulated Amortization | (695) | (6,753) |
Trademarks and Trade Names [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Assets, Gross | 4,918 | 10,052 |
Finite-Lived Intangible Assets, Accumulated Amortization | (2,198) | (6,886) |
Customer Relationships [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Assets, Gross | 119,320 | 138,223 |
Finite-Lived Intangible Assets, Accumulated Amortization | (81,614) | (90,180) |
Use Rights [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-Lived Intangible Assets, Gross | 12,650 | 13,484 |
Finite-Lived Intangible Assets, Accumulated Amortization | (860) | (567) |
Other Noncurrent Liabilities [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Government grants | 8,153 | 8,133 |
Other Current Liabilities [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Government grants | $ 446 | $ 368 |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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