STOCK-BASED COMPENSATION Performance-based Awards and Restricted Stock Units (Details) $ / shares in Units, $ in Thousands	6 Months Ended
Jun. 30, 2022 USD ($) $ / shares shares
Restricted Stock Units (RSUs)
Shares
Outstanding, shares at beginning of the period	1,144,000
Granted	481,000
Vested, shares	(433,000)
Forfeited or canceled, shares	(40,000)
Outstanding, shares at ending of the period	1,152,000
Outstanding and expected to vest at ending of the period	1,053,000
Weighted- Average Grant Date Fair Value Per Share (in dollars per share)
Outstanding, weighted-average grant date fair value per share, beginning of period \| $ / shares	$ 46.81
Granted \| $ / shares	76.45
Vested \| $ / shares	42.34
Forfeited \| $ / shares	56.04
Outstanding, weighted-average grant date fair value per share, end of period \| $ / shares	$ 60.55
Weighted-Average Remaining Contractual Term (In years)
Outstanding, weighted-average remaining contractual term (in years)	2 years
Outstanding and expected to vest, weighted-average remaining contractual term (in years)	1 year 10 months 20 days
Aggregate Intrinsic Value (In thousands)
Outstanding, Aggregate Intrinsic Value \| $	$ 86,448
Outstanding and expected to vest, aggregate intrinsic value \| $	$ 79,006
Long-Term Performance-Based Awards (PRSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance based period	3 years
Shares
Outstanding, shares at beginning of the period	383,000
Granted	110,000
Vested, shares	(135,000)
Outstanding, shares at ending of the period	358,000
Outstanding and expected to vest at ending of the period	152,000
Weighted- Average Grant Date Fair Value Per Share (in dollars per share)
Outstanding, weighted-average grant date fair value per share, beginning of period \| $ / shares	$ 53.14
Granted \| $ / shares	78.96
Vested \| $ / shares	34.09
Outstanding, weighted-average grant date fair value per share, end of period \| $ / shares	$ 68.18
Weighted-Average Remaining Contractual Term (In years)
Outstanding, weighted-average remaining contractual term (in years)	1 year 4 months 24 days
Outstanding and expected to vest, weighted-average remaining contractual term (in years)	1 year 25 days
Aggregate Intrinsic Value (In thousands)
Outstanding, Aggregate Intrinsic Value \| $	$ 26,881
Outstanding and expected to vest, aggregate intrinsic value \| $	$ 11,408
Performance Based Awards (PSUs)
Shares
Outstanding, shares at beginning of the period	104,000
Granted	118,000
Vested, shares	(104,000)
Forfeited or canceled, shares	(2,000)
Outstanding, shares at ending of the period	116,000
Outstanding and expected to vest at ending of the period	75,000
Weighted- Average Grant Date Fair Value Per Share (in dollars per share)
Outstanding, weighted-average grant date fair value per share, beginning of period \| $ / shares	$ 84.47
Granted \| $ / shares	79.93
Vested \| $ / shares	84.47
Forfeited \| $ / shares	79.23
Outstanding, weighted-average grant date fair value per share, end of period \| $ / shares	$ 79.94
Weighted-Average Remaining Contractual Term (In years)
Outstanding, weighted-average remaining contractual term (in years)	6 months
Outstanding and expected to vest, weighted-average remaining contractual term (in years)	6 months
Aggregate Intrinsic Value (In thousands)
Outstanding, Aggregate Intrinsic Value \| $	$ 8,678
Outstanding and expected to vest, aggregate intrinsic value \| $	$ 5,623
Minimum \| Long-Term Performance-Based Awards (PRSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Performance Based Awards Shares Released As Percentage Of Target Number	0.00%
Minimum \| Performance Based Awards (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Performance Based Awards Shares Released As Percentage Of Target Number	0.00%
Maximum \| Long-Term Performance-Based Awards (PRSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Performance Based Awards Shares Released As Percentage Of Target Number	200.00%
Maximum \| Performance Based Awards (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Performance Based Awards Shares Released As Percentage Of Target Number	200.00%

Number of Performance Based Awards Shares Released as Percentage of Target Number.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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