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Intangibles (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Apr. 02, 2016 | Apr. 04, 2015 | Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, gross | $ 604,435 |  | $ 577,728
Finite-lived intangible assets, accumulated amortization | $ 381,071 |  | $ 359,706
Finite-lived intangible assets, average useful life in years | 7 years |  | 8 years
Indefinite-Lived Intangible Assets [Line Items] |  |  |
Indefinite-lived intangible assets | $ 14,220 |  | $ 14,364
Intangible Assets [Line Items] |  |  |
Intangible assets, gross foreign currency translation adjustments | 16,000 |  |
Intangible assets, accumulated amortization foreign currency translation adjustments | 10,000 |  |
Amortization expense | 11,000 | $ 11,000 |
FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract |  |  |
Future amortization expense, year 1 | 44,000 |  |
Future amortization expense, year 2 | 44,000 |  |
Future amortization expense, year 3 | 44,000 |  |
Future amortization expense, year 4 | 44,000 |  |
Future amortization expense, year 5 | 44,000 |  |
Capitalized software [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, gross | 359,320 |  | 335,949
Finite-lived intangible assets, accumulated amortization | $ 219,880 |  | $ 204,267
Finite-lived intangible assets, average useful life in years | 6 years |  | 7 years
Purchased intangibles [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, gross | $ 165,464 |  | $ 163,500
Finite-lived intangible assets, accumulated amortization | $ 123,351 |  | $ 119,505
Finite-lived intangible assets, average useful life in years | 11 years |  | 11 years
Licenses [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, gross | $ 5,278 |  | $ 5,396
Finite-lived intangible assets, accumulated amortization | $ 4,070 |  | $ 4,046
Finite-lived intangible assets, average useful life in years | 6 years |  | 6 years
Patents and other intangibles [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Finite-lived intangible assets, gross | $ 60,153 |  | $ 58,519
Finite-lived intangible assets, accumulated amortization | $ 33,770 |  | $ 31,888
Finite-lived intangible assets, average useful life in years | 8 years |  | 8 years

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