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SUPPLEMENTAL BALANCE SHEET INFORMATION - Composition of Other Current Liabilities (Details) - USD ($)
$ in Thousands
Dec. 26, 2020
Dec. 28, 2019
Supplemental Balance Sheet Information [Abstract]    
Current portion of operating lease right-of-use liabilities $ 24,674 $ 20,357
Accrued income taxes 24,884 26,066
Customer contract deposits 42,244 33,080
Other 10,675 11,095
Other current liabilities $ 102,477 $ 90,598