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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Summary of Carrying Amounts and Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands | Sep. 30, 2021 | Jun. 28, 2021 | Mar. 04, 2021 | Dec. 31, 2020
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Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] |  |  |  |
Derivative financial instruments | $ 26,392 |  |  | $ 8,913
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] |  |  |  |
Derivative financial instruments | $ 627,166 |  |  | $ 47,005
7.5% Senior Notes due 2025 |  |  |  |
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] |  |  |  |
Interest rate on debt instrument | 7.50% |  | 7.50% |
9.75% Senior Notes due 2026 |  |  |  |
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] |  |  |  |
Interest rate on debt instrument |  |  | 9.75% | 9.75%
6.75% Senior Notes due 2029: |  |  |  |
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] |  |  |  |
Interest rate on debt instrument | 6.75% |  | 6.75% |
5.875% senior notes due 2030 |  |  |  |
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] |  |  |  |
Interest rate on debt instrument | 5.875% | 5.875% |  |
Bank Credit Facility |  |  |  |
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] |  |  |  |
Long-term debt, carrying value | $ 425,000 |  |  | $ 500,000
Long-term debt, fair value | 425,000 |  |  | 500,000
Level 1 | 7.5% Senior Notes due 2025 |  |  |  |
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] |  |  |  |
Long-term debt, carrying value | 194,339 |  |  | 473,728
Long-term debt, fair value | 253,871 |  |  | 628,691
Level 1 | 9.75% Senior Notes due 2026 |  |  |  |
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] |  |  |  |
Long-term debt, carrying value | 0 |  |  | 1,577,824
Long-term debt, fair value | 0 |  |  | 1,769,625
Level 1 | 6.75% Senior Notes due 2029: |  |  |  |
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] |  |  |  |
Long-term debt, carrying value | 1,257,067 |  |  | 0
Long-term debt, fair value | 1,348,438 |  |  | 0
Level 1 | 5.875% senior notes due 2030 |  |  |  |
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] |  |  |  |
Long-term debt, carrying value | 965,000 |  |  | 0
Long-term debt, fair value | 1,007,219 |  |  | 0
Derivative Financial Instruments | Level 2 and Level 3 |  |  |  |
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] |  |  |  |
Derivative financial instruments | 26,734 |  |  | 9,574
Derivative financial asset, Fair value | 26,734 |  |  | 9,574
Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] |  |  |  |
Derivative financial instruments | 677,293 |  |  | 49,369
Derivative financial liabilities, fair value | $ 677,293 |  |  | $ 49,369

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