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Supplemental Cash Flow Information (Tables) | 3 Months Ended
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Mar. 31, 2020
Supplemental Cash Flow Elements [Abstract] |
Net Changes In Components of Operating Assets and Liabilities | The following table provides information regarding the net changes in components of operating assets and liabilities.
| Three Months Ended March 31,
| 2020 |  | 2019
(Increase) decrease in: |  |  |
Accounts receivable | $ | 101,405 |  |  | $ | 18,170 |
Inventories | (5,024 | ) |  | (6,616 | )
Deferred charges | 2,783 |  |  | (4,092 | )
Other current assets | (3,746 | ) |  | (5,067 | )
Increase (decrease) in: |  |  |
Accounts payable | (62,365 | ) |  | 5,226 |
Accrued liabilities | (25,519 | ) |  | (4,421 | )
Net changes in components of operating assets and liabilities | $ | 7,534 |  |  | $ | 3,200 |

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