STOCK PLANS - Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-Based Compensation
Stock-based compensation expense	$ 42,246	$ 39,920	$ 33,650
Related income tax benefit	8,989	8,578	0
Stock options
Share-Based Compensation
Stock-based compensation expense	25,980	26,749	23,360
RSUs
Share-Based Compensation
Stock-based compensation expense	15,335	12,266	9,511
ESPP
Share-Based Compensation
Stock-based compensation expense	931	905	779
Cost of goods sold
Share-Based Compensation
Stock-based compensation expense	5,891	5,589	4,665
Research and development
Share-Based Compensation
Stock-based compensation expense	5,465	5,211	5,114
Selling, general and administrative
Share-Based Compensation
Stock-based compensation expense	$ 30,890	$ 29,120	$ 23,871