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ACCRUED EXPENSES (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019
Payables and Accruals [Abstract] |  |
Accrued insurance, employee medical insurance costs | $ 9.4 | $ 14.3
Accrual loss for workers' compensation, comprehensive general liability and vehicle liability self-insurance programs | 65.6 | $ 59.4
Increase in payroll tax payable | 17.0 |
Decrease in accrued payroll | 4.8 |
Decrease In accrued bonuses | $ 3.5 |

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