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STOCK-BASED COMPENSATION (Restricted Stock and Restricted Stock Units Additional Information) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands			3 Months Ended
	Apr. 15, 2022	Mar. 31, 2022	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense			$ 7,112	$ 24,553
Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted (in shares)	22
Emakina Group SA
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity granted			43,100
Stock-based compensation expense			$ 1,100	$ 1,200
Restricted Stock Units \| Emakina Group SA
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant		7	7
Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining unrecognized stock-based compensation cost		$ 600	$ 600
Weighted-average remaining requisite service period			29 days
Stock based compensation expense			$ 1,700
Equity Classified Award \| Restricted Stock Units \| Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares)	198
Liability Classified Award \| Restricted Stock Units \| Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares)	7
Liability Classified Award \| Cash-Settled Award \| Restricted Stock Units \| Emakina Group SA \| Subsequent Event \| Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period	4 years
Service Based Awards \| Equity Classified Award \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining unrecognized stock-based compensation cost		200	$ 200
Weighted-average remaining requisite service period			4 months 24 days
Service Based Awards \| Equity Classified Award \| Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining unrecognized stock-based compensation cost		183,200	$ 183,200
Weighted-average remaining requisite service period			3 years 2 months 12 days
Service Based Awards \| Equity Classified Award \| Equity-Settled Award \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in usd per share)			$ 0
Awards granted (in shares)			0
Service Based Awards \| Equity Classified Award \| Equity-Settled Award \| Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in usd per share)			$ 278.53
Awards granted (in shares)			366
Service Based Awards \| Liability Classified Award \| Cash-Settled Award \| Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining unrecognized stock-based compensation cost		26,900	$ 26,900
Weighted-average remaining requisite service period			2 years 9 months 18 days
Awards granted (in usd per share)			$ 266.75
Awards granted (in shares)			42
Performance Based Awards \| Equity Classified Award \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining unrecognized stock-based compensation cost		600	$ 600
Weighted-average remaining requisite service period			1 year 4 months 24 days
Performance Based Awards \| Equity Classified Award \| Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining unrecognized stock-based compensation cost		$ 4,700	$ 4,700
Weighted-average remaining requisite service period			3 years
Performance Based Awards \| Equity Classified Award \| Restricted Stock Units \| Emakina Group SA
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued in period (in shares)		7
Performance Based Awards \| Equity Classified Award \| Equity-Settled Award \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in usd per share)			$ 0
Awards granted (in shares)			0
Performance Based Awards \| Equity Classified Award \| Equity-Settled Award \| Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in usd per share)			$ 556.68
Awards granted (in shares)			1
Accrued compensation and benefits expenses \| Service Based Awards \| Liability Classified Award \| Cash-Settled Award \| Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Liability associated with RSUs		$ 11,200	$ 11,200		$ 31,500