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STOCK-BASED COMPENSATION (Narrative) (Details) - USD ($) $ in Millions |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Aug. 04, 2020 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Aug. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Stock-based compensation cost |  | $ 8.9 | $ 2.7 | $ 13.2 | $ 8.3 |
Capitalized stock-based compensation cost |  | 0.3 | $ 1.1 | $ 2.2 | $ 3.3 |
Percent of target based award, minimum |  |  |  | 0.00% |  |
Percent of target based award, maximum |  |  |  | 200.00% |  |
Restricted Stock |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Unrecognized compensation expense |  | 6.4 |  | $ 6.4 |  |
Weighted average period of expense recognition period |  |  |  | 1 year 6 months 7 days |  |
Performance Shares |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Unrecognized compensation expense |  | 1.7 |  | $ 1.7 |  |
Weighted average period of expense recognition period |  |  |  | 1 year 6 months 3 days |  |
Incentive Awards |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Stock-based compensation cost |  |  |  | $ 1.5 |  |
Percentage of cash retention incentives clawed back | 50.00% |  |  |  |  |
Percentage of cash retention incentives repaid | 50.00% |  |  |  |  |
Cash retention |  |  |  |  |  | $ 13.5
Cash incentives net |  | 5.2 |  | 5.2 |  |
Prepaid cash incentives |  | $ 4.8 |  | $ 4.8 |  |
Minimum | Restricted Stock |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting period |  |  |  | 1 year |  |
Maximum | Restricted Stock |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |
Vesting period |  |  |  | 3 years |  |

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