LONG-TERM DEBT LIABILITIES - Senior Unsecured Debt (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2011 |
Mar. 31, 2016 |
|
| Debt Instrument [Line Items] | ||
| Redemption of the principal amount | 105.25% | |
| Debt Instrument, Interest Rate, Stated Percentage | 10.50% | |
| Senior Unsecured Debt | ||
| Debt Instrument [Line Items] | ||
| Senior Notes | $ 220.0 | |
| Net Proceeds | 212.7 | |
| Debt Instrument Original Issue Discount | 2.9 | |
| Redemption of the principal amount | 105.25% | |
| Deferred Finance Costs, Current, Net | $ 6.1 | |
| Senior Unsecured Debt | On Or After December 1, 2016 [Member] | ||
| Debt Instrument [Line Items] | ||
| Redemption of the principal amount | 102.625% |