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v3.20.1

Supplemental Cash Flow Information (Tables) | 12 Months Ended
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Dec. 31, 2019
Supplemental Cash Flow Elements [Abstract] |
Schedule of Cash, Cash Equivalents, and Restricted Cash | Total cash, cash equivalents, restricted cash, and cash and restricted cash held for sale are as follows:
| December 31, 2019 |  | December 31, 2018 |  | December 31, 2017
| $ |  | $ |  | $
Cash and cash equivalents | 353,241 |  |  | 424,169 |  |  | 445,452 |
Restricted cash – current | 56,777 |  |  | 40,493 |  |  | 38,179 |
Restricted cash – non-current | 44,849 |  |  | 40,977 |  |  | 68,543 |
Assets held for sale - cash | 1,121 |  |  | — |  |  | — |
Assets held for sale - restricted cash | 337 |  |  | — |  |  | — |
| 456,325 |  |  | 505,639 |  |  | 552,174 |
Changes in Operating Assets and Liabilities | The changes in operating assets and liabilities for the years ended December 31, 2019, 2018, and 2017, are as follows:
| Year Ended December 31,
| 2019 |  | 2018 |  | 2017
Accounts receivable | (38,811 | ) |  | (25,090 | ) |  | (1,925 | )
Prepaid expenses and other | (103,712 | ) |  | (30,808 | ) |  | 3,118 |
Accounts payable | 104,579 |  |  | 8,929 |  |  | (14,499 | )
Accrued liabilities and other | 33,121 |  |  | 32,215 |  |  | 118,137 |
| (4,823 | ) |  | (14,754 | ) |  | 104,831 |

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- Definition Tabular disclosure of the net increase (decrease) in operating capital in the operating section of the statement of cash flows, represents the entire footnote disclosure that provides details regarding the net change during the reporting period of all assets and liabilities used in operating activities. + References No definition available. + Details
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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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