SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Income Taxes (Details) - USD ($) $ in Thousands		3 Months Ended
	Dec. 30, 2017	Mar. 31, 2018	Apr. 01, 2017
Income Tax Contingency [Line Items]
United States		$ 41,765	$ 35,424
Foreign		11,247	19,900
Earnings before income taxes		$ 53,012	$ 55,324
Unremitted foreign earnings	$ 400,000
Tax Cuts and Jobs Act, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Provisional Liability	9,890
Federal
Income Tax Contingency [Line Items]
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Provisional Income Tax Expense	10,373
State
Income Tax Contingency [Line Items]
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Transition Tax for Accumulated Foreign Earnings, Provisional Income Tax Expense	$ 1,300