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SHARE-BASED PAYMENTS - Schedule of equity incentive award activity (Details) - Amended and Restated 2009 Stock Incentive Plan - $ / shares | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Shares |  |
Nonvested, beginning (in shares) | 3,375,627 | 3,168,357
Granted (in shares) | 537,168 | 872,947
Vested (in shares) | (1,615,025) | (571,448)
Forfeited (in shares) | (156,441) | (94,229)
Nonvested, ending (in shares) | 2,141,329 | 3,375,627
Weighted Average Fair Value |  |
Nonvested, beginning (in dollars per share) | $ 54.66 | $ 52.84
Granted (in dollars per share) | 38.16 | 51.08
Vested (in dollars per share) | 62.63 | 36.98
Forfeited (in dollars per share) | 45.13 | 57.46
Nonvested, ending, (in dollars per share) | $ 54.18 | $ 54.66

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- Definition Gross number of share options (or share units) granted during the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(01) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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