STOCK PLANS AND SHARE BASED COMPENSATION (Performance-based Awards and Restricted Stock Units) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Performance Based Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of performance-based awards shares released as a percentage of target number, minimum	0.00%
Number of performance-based awards shares released as a percentage of target number, maximum	200.00%
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments [Roll Forward]
Outstanding, shares	61	26	79	99
Granted, shares	93	89	88
Vested, shares	(26)	(79)	(99)
Forfeited or expired, shares	(32)	(63)	(9)
Outstanding, weighted-average grant date fair value per share, beginning of period	$ 62.87	$ 63.99	$ 46.25
Granted, weighted-average grant date fair value per share	70.11	62.87	63.99
Vested, weighted-average grant date fair value per share	62.87	63.99	46.25
Forfeited or expired, weighted-average grant date fair value per share	70.11	62.87	63.99
Outstanding, weighted-average grant date fair value per share, end of period	$ 70.11	$ 62.87	$ 63.99
Outstanding, weighted-average remaining contractual term (in years)	0 years
Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Outstanding, Aggregate Intrinsic Value	$ 5,999
Outstanding and expected to vest, shares	61
Outstanding and expected to vest, weighted-average remaining contractual term (in years)	0 years
Outstanding and expected to vest, aggregate intrinsic value	$ 5,999
Grant date fair value of awards released	$ 1,600	$ 5,100	$ 4,600
Long-Term Performance-based Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of performance-based awards shares released as a percentage of target number, minimum	0.00%
Number of performance-based awards shares released as a percentage of target number, maximum	200.00%
Performance based period	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments [Roll Forward]
Outstanding, shares	144	213	184	150
Granted, shares	72	72	71
Vested, shares	(70)	(38)	0
Forfeited or expired, shares	(71)	(5)	(37)
Outstanding, weighted-average grant date fair value per share, beginning of period	$ 55.48	$ 52.80	$ 47.65
Granted, weighted-average grant date fair value per share	68.17	59.90	63.00
Vested, weighted-average grant date fair value per share	43.26	52.45	0
Forfeited or expired, weighted-average grant date fair value per share	63.00	43.26	51.59
Outstanding, weighted-average grant date fair value per share, end of period	$ 64.05	$ 55.48	$ 52.80
Outstanding, weighted-average remaining contractual term (in years)	1 year 6 months
Outstanding, aggregate intrinsic value	$ 14,203
Outstanding and expected to vest, shares	58
Outstanding and expected to vest, weighted-average remaining contractual term (in years)	2 years
Outstanding and expected to vest, aggregate intrinsic value	$ 5,768
Grant date fair value of awards released	$ 3,000	$ 2,000
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vesting period	4 years
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments [Roll Forward]
Outstanding, shares	860	895	948	718
Granted, shares	291	275	558
Vested, shares	(301)	(296)	(284)
Forfeited or expired, shares	(25)	(32)	(44)
Outstanding, weighted-average grant date fair value per share, beginning of period	$ 58.19	$ 55.51	$ 47.54
Granted, weighted-average grant date fair value per share	69.79	62.85	60.82
Vested, weighted-average grant date fair value per share	56.19	53.78	46.52
Forfeited or expired, weighted-average grant date fair value per share	63.43	59.43	50.89
Outstanding, weighted-average grant date fair value per share, end of period	$ 62.66	$ 58.19	$ 55.51
Outstanding, weighted-average remaining contractual term (in years)	1 year 6 months 29 days
Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Outstanding, Aggregate Intrinsic Value	$ 85,037
Outstanding and expected to vest, shares	801
Outstanding and expected to vest, weighted-average remaining contractual term (in years)	1 year 6 months
Outstanding and expected to vest, aggregate intrinsic value	$ 79,192
Grant date fair value of awards released	$ 16,900	$ 15,900	$ 13,200
Exercise Price Range One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Exercise Price Range, Lower Range Limit	$ 32.26
Options Outstanding, Exercise Price Range, Upper Range Limit	38.07
Exercise Price Range Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options Outstanding, Exercise Price Range, Lower Range Limit	39.49
Options Outstanding, Exercise Price Range, Upper Range Limit	$ 42.88

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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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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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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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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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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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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The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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Intrinsic value of outstanding award under share-based payment arrangement. Excludes share and unit options.

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