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Significant Accounting Policies (Goodwill and Other Intangible Assets) (Details) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jul. 01, 2017 USD ($) | Dec. 30, 2017 USD ($) reporting_unit | Dec. 31, 2016 USD ($) | Jan. 02, 2016 USD ($) | Apr. 01, 2017
Finite lived intangible assets |  |  |  |  |
Number of reporting units that evaluate goodwill for impairment | reporting_unit |  | 3 |  |  |
Market capitalization to carrying amount of net assets ratio |  |  | 23.00% |  | (14.00%)
Goodwill, impairment loss |  | $ 359,493,000 |  |  |
Americas |  |  |  |  |
Finite lived intangible assets |  |  |  |  |
Goodwill, impairment loss | $ (202,300,000) |  |  |  |
Europe |  |  |  |  |
Finite lived intangible assets |  |  |  |  |
Goodwill, impairment loss | (114,300,000) |  |  |  |
Asia |  |  |  |  |
Finite lived intangible assets |  |  |  |  |
Goodwill, impairment loss | (42,900,000) | $ 42,900,000 |  |  |
Trade name |  |  |  |  |
Finite lived intangible assets |  |  |  |  |
Impairment charges |  |  | $ 0 |  |
Trade Names, SKAGEN |  |  |  |  |
Finite lived intangible assets |  |  |  |  |
Indefinite-lived intangible assets (excluding goodwill) | 55,600,000 |  |  |  |
Indefinite-lived intangible assets (excluding goodwill), fair value disclosure | 27,300,000 |  |  |  |
Impairment charges | 28,300,000 |  |  | $ 9,100,000 |
Trade Names, MISFIT |  |  |  |  |
Finite lived intangible assets |  |  |  |  |
Indefinite-lived intangible assets (excluding goodwill) | 11,800,000 |  |  |  |
Impairment charges | 11,800,000 |  |  |  |
Trade Name, MICHELE |  |  |  |  |
Finite lived intangible assets |  |  |  |  |
Indefinite-lived intangible assets (excluding goodwill) | 18,500,000 |  |  |  |
Indefinite-lived intangible assets (excluding goodwill), fair value disclosure | 10,900,000 |  |  |  |
Impairment charges | $ 7,600,000 |  |  |  |
Minimum |  |  |  |  |
Finite lived intangible assets |  |  |  |  |
Useful lives |  | 3 years |  |  |
Maximum |  |  |  |  |
Finite lived intangible assets |  |  |  |  |
Useful lives |  | 20 years |  |  |

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