STOCK-BASED COMPENSATION - Financial Statement Line Items in Which Stock-Based Compensation is Located (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation, before income taxes	$ 56,341	$ 57,271	$ 47,346
Provision for income taxes	(8,130)	(9,465)	(9,188)
Stock-based compensation, net of income taxes	48,211	47,806	38,158
Cost of revenue
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation, before income taxes	10,636	9,038	6,285
Selling, general and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation, before income taxes	$ 45,705	$ 48,233	$ 41,061

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount, after tax, of expense for award under share-based payment arrangement.

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Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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