XML 64 R48.htm IDEA: XBRL DOCUMENT
v3.19.1

Supplemental Cash Flow Information (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2018
Supplemental Cash Flow Elements [Abstract] |
Schedule of Cash, Cash Equivalents, and Restricted Cash | Total cash, cash equivalents and restricted cash are as follows:
| December 31, 2018 |  | December 31, 2017 |  | December 31, 2016
| $ |  | $ |  | $
Cash and cash equivalents | 424,169 |  |  | 445,452 |  |  | 567,994 |
Restricted cash – current | 40,493 |  |  | 38,179 |  |  | 107,672 |
Restricted cash – non-current | 40,977 |  |  | 68,543 |  |  | 129,576 |
| 505,639 |  |  | 552,174 |  |  | 805,242 |
Changes in Operating Assets and Liabilities | The changes in operating assets and liabilities for the years ended December 31, 2018, 2017, and 2016, are as follows:
| Year Ended December 31,
| 2018 |  | 2017 |  | 2016
Accounts receivable | (25,090 | ) |  | (1,925 | ) |  | 96,497 |
Prepaid expenses and other | (30,808 | ) |  | 3,118 |  |  | 9,690 |
Accounts payable | 8,929 |  |  | (14,499 | ) |  | (10,705 | )
Accrued liabilities and other | 32,215 |  |  | 118,137 |  |  | (44,748 | )
| (14,754 | ) |  | 104,831 |  |  | 50,734 |

X
- 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
Name: | us-gaap_CashFlowOperatingCapitalTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the components of cash and cash equivalents. + References No definition available. + Details
Name: | us-gaap_ScheduleOfCashAndCashEquivalentsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_SupplementalCashFlowElementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration