STOCK-BASED COMPENSATION Performance-based Awards and Restricted Stock Units (Details) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2022 USD ($) $ / shares shares
Restricted Stock Units (RSUs)
Shares
Outstanding, shares at beginning of the period	1,144,000
Granted	257,000
Vested, shares	(158,000)
Forfeited or canceled, shares	(9,000)
Outstanding, shares at ending of the period	1,234,000
Outstanding and expected to vest at March 31, 2022	1,157,000
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	77.73
Vested \| $ / shares	42.27
Forfeited \| $ / shares	52.58
Outstanding, weighted-average grant date fair value per share, end of period \| $ / shares	$ 53.78
Weighted-Average Remaining Contractual Term (In years)
Outstanding, weighted-average remaining contractual term (in years)	1 year 9 months 10 days
Outstanding and expected to vest at March 31, 2022	1 year 4 months 9 days
Aggregate Intrinsic Value (In thousands)
Outstanding, Aggregate Intrinsic Value \| $	$ 114,351
Outstanding and expected to vest at March 31, 2022 \| $	$ 107,194
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 March 31, 2022	332,000
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 7 months 24 days
Outstanding and expected to vest at March 31, 2022	1 year 6 months 21 days
Aggregate Intrinsic Value (In thousands)
Outstanding, Aggregate Intrinsic Value \| $	$ 33,214
Outstanding and expected to vest at March 31, 2022 \| $	$ 30,771
Performance Based Awards (PSUs)
Shares
Outstanding, shares at beginning of the period	104,000
Granted	117,000
Vested, shares	(104,000)
Forfeited or canceled, shares	0
Outstanding, shares at ending of the period	117,000
Outstanding and expected to vest at March 31, 2022	117,000
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	79.84
Vested \| $ / shares	84.47
Forfeited \| $ / shares	0
Outstanding, weighted-average grant date fair value per share, end of period \| $ / shares	$ 79.84
Weighted-Average Remaining Contractual Term (In years)
Outstanding, weighted-average remaining contractual term (in years)	9 months
Outstanding and expected to vest at March 31, 2022	9 months
Aggregate Intrinsic Value (In thousands)
Outstanding, Aggregate Intrinsic Value \| $	$ 10,819
Outstanding and expected to vest at March 31, 2022 \| $	$ 10,819
Minimum [Member] \| 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 [Member] \| 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 [Member] \| 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 [Member] \| 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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The weighted average fair value at grant date for nonvested equity-based awards issued 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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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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