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Goodwill and Other Intangible Assets (Other Intangible Assets) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2017 | Oct. 01, 2016 | Sep. 30, 2017 | Oct. 01, 2016 | Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross | $ 282,848 |  | $ 282,848 |  | $ 293,585
Accumulated Amortization | 97,034 |  | 97,034 |  | 110,919
Net | 185,814 |  | 185,814 |  | 182,666
Amortization expense | 4,404 | $ 3,235 | 10,492 | $ 8,575 |
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract] |  |  |  |  |
2017 | 16,400 |  | 16,400 |  |
2018 | 23,200 |  | 23,200 |  |
2019 | 22,100 |  | 22,100 |  |
2020 | 21,200 |  | 21,200 |  |
2021 | 20,500 |  | 20,500 |  |
Patents |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross | 40 |  | 40 |  | 18,645
Accumulated Amortization | 24 |  | 24 |  | 18,623
Net | 16 |  | 16 |  | 22
Software |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross | 163,741 |  | 163,741 |  | 149,587
Accumulated Amortization | 31,022 |  | 31,022 |  | 25,792
Net | 132,719 |  | 132,719 |  | 123,795
Trademarks and trade names |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross | 7,564 |  | 7,564 |  | 7,564
Accumulated Amortization | 1,896 |  | 1,896 |  | 1,401
Net | 5,668 |  | 5,668 |  | 6,163
Customer lists and other |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |
Gross | 111,503 |  | 111,503 |  | 117,789
Accumulated Amortization | 64,092 |  | 64,092 |  | 65,103
Net | $ 47,411 |  | $ 47,411 |  | $ 52,686

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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=98514028&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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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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