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SHARE-BASED COMPENSATION (Narrative) (Details) - trading_day	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Line Items]
Trading days proceeding and performance period	10	10
Performance Restricted Stock Units | Performance Restricted Stock Units Granted In 2021
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Line Items]
Vesting period	3 years
Performance Restricted Stock Units | Performance Restricted Stock Units Granted In 2021 | Minimum
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Line Items]
Vesting percentage (as a percent)	0.00%
Performance Restricted Stock Units | Performance Restricted Stock Units Granted In 2021 | Maximum
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Line Items]
Vesting percentage (as a percent)	200.00%
Performance Restricted Stock Units | Performance Restricted Stock Units granted in 2020 and 2019
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Line Items]
Vesting period	3 years
Performance Restricted Stock Units | Performance Restricted Stock Units granted in 2020 and 2019 | Minimum
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Line Items]
Vesting percentage (as a percent)	75.00%
Performance Restricted Stock Units | Performance Restricted Stock Units granted in 2020 and 2019 | Maximum
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Line Items]
Vesting percentage (as a percent)	125.00%
Performance Restricted Stock Units | Performance Restricted Stock Units granted in 2018
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Line Items]
Vesting period	3 years
Performance Restricted Stock Units | Performance Restricted Stock Units granted in 2018 | Minimum
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Line Items]
Vesting percentage (as a percent)	0.00%
Performance Restricted Stock Units | Performance Restricted Stock Units granted in 2018 | Maximum
Reconcilation of Beginning and Ending Balance of Nonvested Restricted Stock (including RSUs) [Line Items]
Vesting percentage (as a percent)	200.00%

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Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period

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Percentage of vesting of award under share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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