STOCK PLANS AND SHARE BASED COMPENSATION (Stock-Based Compensation) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Stock-based compensation expense for stock options, stock awards and employee stock purchases included in operations:
Stock-based compensation expense	$ 22,364	$ 37,609	$ 30,912
Unrecognized Compensation Expense for Unvested Awards	46,906
Long-Term Performance-Based Awards (PRSUs)
Stock-based compensation expense for stock options, stock awards and employee stock purchases included in operations:
Unrecognized Compensation Expense for Unvested Awards	$ 0
Weighted Average Remaining Recognition Period	0 years
Restricted Stock Units (RSUs)
Stock-based compensation expense for stock options, stock awards and employee stock purchases included in operations:
Stock-based compensation expense	$ 23,200	19,900	18,700
Unrecognized Compensation Expense for Unvested Awards	$ 46,724
Weighted Average Remaining Recognition Period	2 years 9 months 29 days
Employee Stock Purchase Plan
Stock-based compensation expense for stock options, stock awards and employee stock purchases included in operations:
Stock-based compensation expense	$ 1,900	2,000	2,000
Unrecognized Compensation Expense for Unvested Awards	$ 182
Weighted Average Remaining Recognition Period	1 month
Cost of revenues
Stock-based compensation expense for stock options, stock awards and employee stock purchases included in operations:
Stock-based compensation expense	$ 1,132	2,359	1,963
Research and development
Stock-based compensation expense for stock options, stock awards and employee stock purchases included in operations:
Stock-based compensation expense	10,428	12,127	10,378
Sales and marketing
Stock-based compensation expense for stock options, stock awards and employee stock purchases included in operations:
Stock-based compensation expense	6,035	7,630	6,290
General and administrative
Stock-based compensation expense for stock options, stock awards and employee stock purchases included in operations:
Stock-based compensation expense	$ 4,769	$ 15,493	$ 12,281

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

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