OTHER NON-CURRENT ASSETS (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
|
| Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] | ||
| Land lease and purchase options | $ 5,831 | $ 4,320 |
| Permitting costs | 13,092 | 12,838 |
| Right of use asset — operating leases | 11,884 | 15,832 |
| Other | 2,090 | 3,765 |
| Total other non-current assets | $ 32,897 | $ 36,755 |
| Maximum terms (in years) | 50 years |
| X | ||||||||||
- Definition Lease and purchase options non-current. No definition available.
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| X | ||||||||||
- Definition Lessee Leasing Arrangements, Operating Leases, Maximum Term of Contract Including Renewals No definition available.
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| X | ||||||||||
- Definition Permitting Costs No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of lessee's right to use underlying asset under operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of other miscellaneous assets expected to be realized or consumed after one year or normal operating cycle, if longer. No definition available.
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| X | ||||||||||
- Definition Amount of noncurrent assets classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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