DERIVATIVES AND FAIR VALUE MEASUREMENTS Table 1 - Fair Value of Unwound Interest Rate Swap Agreements (Details) - USD ($) $ in Thousands |
Dec. 31, 2020 |
Dec. 31, 2019 |
|---|---|---|
| Current Portion of Long-Term Debt [Member] | ||
| Derivatives, Fair Value | ||
| Fair market value of unwound fixed-to-floating interest rate swaps | $ 0 | $ 2,755 |
| Long-Term Debt, Less Current Portion [Member] | ||
| Derivatives, Fair Value | ||
| Fair market value of unwound fixed-to-floating interest rate swaps | 1,363 | 2,568 |
| Accumulated Other Comprehensive Income (Loss) [Member] | ||
| Derivatives, Fair Value | ||
| Fair market value of unwound forward starting interest rate swaps | $ (42,150) | $ 3,045 |