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Basis of Presentation (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Oct. 01, 2017 | Oct. 01, 2017 | Sep. 25, 2016 | Apr. 02, 2017 | Dec. 25, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Payments Related To Tax Withholding For Share Based Compensation |  | $ 31,973 | $ 21,914 |  |
Backflip Studios, LLC [Member] |  |  |  |  |
Redeemable Noncontrolling Interest [Line Items] |  |  |  |  |
MinorityInterestOwnershipPercentageByParent |  |  |  |  | 70.00%
Noncontrolling Interest, Remaining Ownership Percentage Acquired by Parent |  | 30.00% |  |  |
Accounting Standards Update 2016-09 [Member] |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Excess Tax Benefit from Share-based Compensation, Operating Activities |  | $ 20,478 | 19,712 |  |
Payments Related To Tax Withholding For Share Based Compensation |  | 31,973 | $ 21,914 |  |
Excess Tax Benefit From Share-based Compensation Recorded To Income Tax Expense | $ 5,014 | $ 20,478 |  |  |
New Accounting Pronouncement Or Change In Accounting Principle Cumulative Effect Of Change On Equity Or Net Assets |  |  |  | $ 700 |

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