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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Income Taxes (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Dec. 30, 2017 | Sep. 29, 2018 | Sep. 30, 2017 | Sep. 29, 2018 | Sep. 30, 2017
Income Tax Contingency [Line Items] |  |  |  |  |
United States |  | $ 15,596 | $ 28,886 | $ 99,697 | $ 115,082
Foreign |  | 486 | 21,675 | 18,482 | 59,210
Earnings before income taxes |  | 16,082 | $ 50,561 | 118,179 | $ 174,292
Unremitted foreign earnings |  | 393,962 |  | 393,962 |
Decrease in unremitted foreign earnings |  |  |  | 6,038 |
Transition tax obligation |  | $ 9,436 |  | 9,436 |
Decrease in transition tax obligation |  |  |  | $ 454 |
Federal |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |
Provisional income tax expense | $ 10,713 |  |  |  |
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Increase (Decrease) To Provisional Income Tax Expense | 340 |  |  |  |
State |  |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |  |
Provisional income tax expense | $ 1,300 |  |  |  |

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