SIGNIFICANT ACCOUNTING POLICIES - Adopted Pronouncements (Details) - USD ($) $ in Thousands	Dec. 29, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease liabilities	$ 54,838
ROU assets	$ 45,128
ASU 2016-02 | Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease liabilities		$ 61,200
ROU assets		$ 51,600