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STOCK-BASED COMPENSATION - Financial Statement Line Items in Which Stock-Based Compensation is Located (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 29, 2018
Dec. 30, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]      
Stock-based compensation, before income taxes $ 47,346 $ 44,003 $ 43,642
Provision for income taxes 9,188 13,428 15,548
Stock-based compensation, net of income taxes 38,158 30,575 28,094
Cost of revenue      
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]      
Stock-based compensation, before income taxes 6,285 6,509 6,508
Selling, general and administrative      
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]      
Stock-based compensation, before income taxes $ 41,061 $ 37,494 $ 37,134