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Supplementary Cash Flow Information Supplemental Cash Flow Information (Tables) | 6 Months Ended
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Jun. 30, 2021
Supplemental Cash Flow Elements [Abstract] |
Schedule of Cash and Cash Equivalents | Total cash, cash equivalents, restricted cash, and cash and restricted cash held for sale are as follows:
| June 30, 2021 |  | December 31, 2020 |  | June 30, 2020 |  | December 31, 2019
| $ |  | $ |  | $ |  | $
Cash and cash equivalents | 258,351 |  | 348,785 |  | 461,152 |  | 353,241
Restricted cash – current | 11,380 |  | 11,144 |  | 16,317 |  | 56,777
Restricted cash – non-current | 40,521 |  | 45,961 |  | 61,948 |  | 44,849
Assets held for sale – cash | — |  | — |  | — |  | 1,121
Assets held for sale – restricted cash | — |  | — |  | — |  | 337
| 310,252 |  | 405,890 |  | 539,417 |  | 456,325

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- Definition Tabular disclosure of the components of cash and cash equivalents. + References No definition available. + Details
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- References No definition available. + Details
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