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Goodwill and Other Intangibles (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jul. 04, 2015 | Jun. 28, 2014 | Jul. 04, 2015 | Jun. 28, 2014 | Dec. 31, 2014
Goodwill [Line Items] |  |  |  |  |
Goodwill | $ 353,340 |  | $ 353,340 |  | $ 354,838
Goodwill foreign currency translation adjustments |  |  | (3,000) |  |
Intangible Assets [Line Items] |  |  |  |  |
Intangible assets, gross | 567,405 |  | 567,405 |  | 574,114
Intangible assets, accumulated amortization | 344,245 |  | $ 344,245 |  | $ 341,743
Weighted-average useful life of acquired intangible assets |  |  | 8 years |  | 8 years
Intangible assets, gross foreign currency translation adjustments |  |  | $ (33,000) |  |
Intangible assets, accumulated amortization foreign currency translation adjustments |  |  | (19,000) |  |
Amortization expense | 11,000 | $ 12,000 | 22,000 | $ 24,000 |
Future amortization expense, year 1 | 44,000 |  | 44,000 |  |
Future amortization expense, year 2 | 44,000 |  | 44,000 |  |
Future amortization expense, year 3 | 44,000 |  | 44,000 |  |
Future amortization expense, year 4 | 44,000 |  | 44,000 |  |
Future amortization expense, year 5 | 44,000 |  | 44,000 |  |
Capitalized software [Member] |  |  |  |  |
Intangible Assets [Line Items] |  |  |  |  |
Intangible assets, gross | 323,553 |  | 323,553 |  | $ 334,280
Intangible assets, accumulated amortization | 193,581 |  | $ 193,581 |  | $ 196,477
Weighted-average useful life of acquired intangible assets |  |  | 7 years |  | 7 years
Purchased intangibles [Member] |  |  |  |  |
Intangible Assets [Line Items] |  |  |  |  |
Intangible assets, gross | 163,209 |  | $ 163,209 |  | $ 163,855
Intangible assets, accumulated amortization | 115,004 |  | $ 115,004 |  | $ 112,279
Weighted-average useful life of acquired intangible assets |  |  | 11 years |  | 11 years
Trademarks and IPR&D[Member] |  |  |  |  |
Intangible Assets [Line Items] |  |  |  |  |
Intangible assets, gross | 14,111 |  | $ 14,111 |  | $ 14,095
Licenses [Member] |  |  |  |  |
Intangible Assets [Line Items] |  |  |  |  |
Intangible assets, gross | 5,629 |  | 5,629 |  | 5,371
Intangible assets, accumulated amortization | 3,927 |  | $ 3,927 |  | $ 3,634
Weighted-average useful life of acquired intangible assets |  |  | 6 years |  | 6 years
Patents and other intangibles [Member] |  |  |  |  |
Intangible Assets [Line Items] |  |  |  |  |
Intangible assets, gross | 60,903 |  | $ 60,903 |  | $ 56,513
Intangible assets, accumulated amortization | 31,733 |  | $ 31,733 |  | $ 29,353
Weighted-average useful life of acquired intangible assets |  |  | 8 years |  | 8 years
Acquisitions in 2015 |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Goodwill | 1,118 |  | $ 1,118 |  |
Intangible Assets [Line Items] |  |  |  |  |
Intangible assets acquired | $ 3,700 |  | $ 3,700 |  |

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