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STOCK-BASED COMPENSATION (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock-based compensation cost | $ 2.2 | $ 2.8 | $ 4.3 | $ 5.6
Capitalized stock-based compensation cost | 1.0 | $ 1.1 | $ 1.9 | $ 2.3
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 | 9.4 |  | $ 9.4 |
Weighted average period of expense recognition period |  |  | 1 year 9 months |
Performance Shares |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Unrecognized compensation expense | 2.2 |  | $ 2.2 |
Weighted average period of expense recognition period |  |  | 1 year 9 months 10 days |
Incentive Awards |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Unrecognized compensation expense | 2.4 |  | $ 2.4 |
Weighted average period of expense recognition period |  |  | 1 year 7 months 13 days |
Fair value of awards outstanding | $ 3.0 |  | $ 3.0 |
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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