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Details Of Certain Accounts - Other Non-Current Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Investee losses in excess of investment (Note 5) | $ 0 | $ 6,035
Deferred gain on sale of property | 0 | 5,052
Deferred revenue (Note 12) | 8,286 | 15,767
Asset retirement obligations (Note 16) | 28,258 | 0
Derivative liability (Note 21) | 0 | 884
Other | 2,100 | 11,800
Total other non-current liabilities | $ 38,644 | $ 39,538
Term of lease agreement | 15 years |

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