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STOCK-BASED COMPENSATION (Summary of Stock Option Activity) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at beginning of year (in shares)	1,284
Granted (in shares)	349
Exercised (in shares)	(236)
Forfeited or Expired (in shares)	(51)
Outstanding at end of year (in shares)	1,346
Exercisable at end of year (in shares)	881,261
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Weighted Average Exercise Price, Outstanding at beginning of year (in dollars per share)	$ 34.83
Weighted Average Exercise Price, Granted (in dollars per share)	43.39
Weighted Average Exercise Price, Exercised (in dollars per share)	19.20
Weighted Average Exercise Price, Forfeited or Expired (in dollars per share)	49.12
Weighted Average Exercise Price, Outstanding at end of year (in dollars per share)	39.25
Weighted Average Exercise Price, Exercisable at end of year (in dollars per share)	$ 35.19
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures
Weighted Average Contractual Term in Years, Outstanding at end of year	4 years 4 months 28 days
Weighted Average Contractual Term in Years, Exercisable at end of year	3 years 2 months 12 days
Aggregate Intrinsic Value, Outstanding	$ 34,560	$ 0
Aggregate Intrinsic Value, Exercisable at end of year	$ 26,197

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Net number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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