LONG-TERM DEBT - Senior Unsecured Debt (Details) - Senior Unsecured Debt |
Dec. 31, 2019
USD ($)
|
|---|---|
| Debt Instrument [Line Items] | |
| Stated interest rate | 7.25% |
| Debt, face amount | $ 400,000,000.0 |
| On or After November 1, 2019 | |
| Debt Instrument [Line Items] | |
| Redemption of the principal amount | 105.438% |
| On or after November 1, 2020 | |
| Debt Instrument [Line Items] | |
| Redemption of the principal amount | 103.625% |
| On or after November 1, 2021 | |
| Debt Instrument [Line Items] | |
| Redemption of the principal amount | 101.813% |
| On or after November 1, 2022 | |
| Debt Instrument [Line Items] | |
| Redemption of the principal amount | 100.00% |