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SHARE-BASED COMPENSATION - Additional information related to share-based compensation (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Liability for cash-settled restricted stock units | $ 21,731 | $ 20,648 |
Restricted Stock and Restricted Stock Units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share based compensation expense incurred | 52,218 | 54,011 | $ 67,697
Tax benefit related to share-based compensation costs incurred | 8,913 | 7,772 | 14,937
Fair value of restricted stock and cash settled awards vested | 51,206 | 50,750 | 124,990
Unrecognized compensation costs | $ 75,770 | $ 87,341 | $ 94,315
Weighted average period for recognition of share based compensation | 2 years 3 months 18 days | 2 years 4 months 24 days | 2 years 6 months
Restricted Stock and Restricted Stock Units | 2014 Long Term Equity Compensation Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Fair value of restricted stock and cash settled awards vested | $ 44,000 |  |
Cash Settled | Restricted Stock and Restricted Stock Units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Liability for cash-settled restricted stock units | $ 21,731 | $ 20,648 | $ 21,535

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- Definition Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements. + References No definition available. + Details
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