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SHORT-TERM AND LONG-TERM DEBT (Summary of Long-Term Debt) (Details) $ in Thousands | Jun. 30, 2025 USD ($) | Jun. 30, 2025 NOK (kr) | Dec. 31, 2024 USD ($) | Apr. 30, 2024 USD ($)
--- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |
Total debt principal | $ 2,839,536 |  | $ 2,862,240 |
Less: Unamortized debt issuance costs | (21,048) |  | (22,778) |
Less: Current portion of long-term debt | (825,178) |  | (689,045) |
Total long-term debt | $ 1,993,310 |  | 2,150,417 |
7.25% senior unsecured sustainability-linked bonds due 2026 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior unsecured convertible notes interest rate (in percentage) | 7.25% | 7.25% |  |
7.25% senior unsecured sustainability-linked bonds due 2026 | Carrying value | Fair value, measurements, recurring |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 150,000 |  | 150,000 |
U.S. dollar denominated fixed rate debt due 2026 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt, gross | $ 146,625 |  | 147,375 |
8.875% senior unsecured sustainability-linked bonds due 2027 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior unsecured convertible notes interest rate (in percentage) | 8.875% | 8.875% |  |
8.875% senior unsecured sustainability-linked bonds due 2027 | Carrying value | Fair value, measurements, recurring |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 150,000 |  | 150,000 |
8.25% senior unsecured sustainability-linked bonds due 2028 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior unsecured convertible notes interest rate (in percentage) | 8.25% | 8.25% |  | 8.25%
8.25% senior unsecured sustainability-linked bonds due 2028 | Carrying value | Fair value, measurements, recurring |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 147,600 |  | 145,200 |
NOK750 million senior unsecured floating rate bonds due 2029 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
U.S. dollar floating rate debt | kr |  | kr 750,000,000 |  |
NOK750 million senior unsecured floating rate bonds due 2029 | Carrying value | Fair value, measurements, recurring |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | $ 74,391 |  | 63,592 |
7.75% senior unsecured sustainability-linked bonds due 2030 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior unsecured convertible notes interest rate (in percentage) | 7.75% | 7.75% |  | 7.75%
U.S. dollar floating rate debt |  |  |  | $ 150,000
Long-term debt | $ 144,400 |  | 0 |
7.75% senior unsecured sustainability-linked bonds due 2030 | Carrying value | Fair value, measurements, recurring |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | 144,400 |  | 0 |
Floating Rate Debt |  |  |  |
Debt Instrument [Line Items] |  |  |  |
U.S. dollar denominated floating rate debt | 1,301,387 |  | 1,503,909 |
Lease debt financing |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Long-term debt | 725,100 |  | 702,200 |
Long-term debt, gross | $ 725,133 |  | $ 702,164 |

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