FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS (Details 2) - USD ($) $ in Thousands |
Jun. 30, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Carrying Value | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Current maturities of long-term debt debt | $ (80,000) | $ 0 |
| Long-term debt, net of current maturities | (1,000,000) | (1,080,000) |
| Fair Value | ||
| Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] | ||
| Current maturities of long-term debt debt | (80,000) | 0 |
| Long-term debt, net of current maturities | $ (1,025,345) | $ (1,099,813) |