STOCK-BASED COMPENSATION - Stock Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 28, 2020	Mar. 30, 2019
Stock-based compensation expense
Stock-based compensation, before income taxes	$ 10,960	$ 12,899
Provision for income taxes	(1,551)	(2,047)
Stock-based compensation, net of income taxes	9,409	10,852
Cost of revenue
Stock-based compensation expense
Stock-based compensation, before income taxes	2,035	1,949
Selling, general and administrative
Stock-based compensation expense
Stock-based compensation, before income taxes	$ 8,925	$ 10,950

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

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