| SENIOR NOTES, NET - Schedule of Senior Notes, Net (Details) - Senior Notes [Member] - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019 | 
|---|---|---|
| Debt Instrument [Line Items] | ||
| Net debt issuance costs | $ (7,048) | $ (8,327) | 
| Senior notes, net | 996,770 | 996,105 | 
| 7.00% senior notes due 2022 [Member] | ||
| Debt Instrument [Line Items] | ||
| Senior notes, gross | $ 300,000 | 300,000 | 
| Stated interest rate | 7.00% | |
| 6.00% senior notes due 2025 [Member] | ||
| Debt Instrument [Line Items] | ||
| Senior notes, gross | $ 403,818 | 404,432 | 
| Stated interest rate | 6.00% | |
| Unamortized premium | $ 3,818 | 4,432 | 
| 5.125% senior notes due 2027 [Member] | ||
| Debt Instrument [Line Items] | ||
| Senior notes, gross | $ 300,000 | $ 300,000 | 
| Stated interest rate | 5.125% | 
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
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- Definition Amount, after accumulated amortization, of debt premium. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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