FAIR VALUE OF FINANCIAL INSTRUMENTS - Carrying Value (Details) - USD ($) $ in Thousands |
Dec. 31, 2019 |
Dec. 31, 2018 |
|---|---|---|
| Term Loan B | ||
| Fair Value Of Instruments [Line Items] | ||
| Total debt before deferred financing costs | $ 770,000 | $ 1,291,700 |
| Fair value of debt | 774,813 | 1,243,261 |
| Revolver | ||
| Fair Value Of Instruments [Line Items] | ||
| Total debt before deferred financing costs | 117,000 | 180,000 |
| Fair value of debt | 117,000 | 180,000 |
| Senior Notes | ||
| Fair Value Of Instruments [Line Items] | ||
| Total debt before deferred financing costs | 400,000 | 400,000 |
| Fair value of debt | 423,250 | 378,000 |
| Notes | ||
| Fair Value Of Instruments [Line Items] | ||
| Total debt before deferred financing costs | 425,000 | 0 |
| Fair value of debt | 454,750 | 0 |
| Other Debt | ||
| Fair Value Of Instruments [Line Items] | ||
| Total debt before deferred financing costs | 873 | 912 |
| Letter of Credit | ||
| Fair Value Of Instruments [Line Items] | ||
| Total debt before deferred financing costs | $ 5,862 | $ 5,862 |