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OTHER INFORMATION - Components of Other Long-Term Liabilities (Detail) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Other Income and Expenses [Abstract] |  |
Unrecognized tax benefits | $ 18,183 | $ 20,334
Asset retirement obligation | 3,951 | 3,722
Non-qualified plan liabilities | 12,265 | 11,343
Deferred income | 22,018 | 22,588
Other | 14,800 | 123
Total other long-term liabilities | $ 71,217 | $ 58,110

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