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Fair Value Measurements (Tables) | 12 Months Ended
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Dec. 31, 2023
Fair Value Disclosures [Abstract] |
Fair Value Measurement Inputs and Valuation Techniques | The following table includes the estimated fair value and carrying value of those assets and liabilities that are measured at fair value on a recurring and non-recurring basis, as well as the estimated fair value of the Company’s financial instruments that are not accounted for at a fair value on a recurring basis.
|  |  | December 31, 2023 |  | December 31, 2022
| Fair Value Hierarchy Level |  | Carrying Amount Asset (Liability) $ |  | Fair Value Asset (Liability) $ |  | Carrying Amount Asset (Liability) $ |  | Fair Value Asset (Liability) $
Recurring |  |  |  |  |  |  |  |  |
Cash, cash equivalents and restricted cash | Level 1 |  | 480,771 |  |  | 480,771 |  |  | 316,706 |  |  | 316,706 |
Short-term investments | Level 1 |  | 172,604 |  |  | 172,604 |  |  | 210,000 |  |  | 210,000 |
Derivative instruments (note 9) |  |  |  |  |  |  |  |  |
Interest rate swap agreements – assets | Level 2 |  | — |  |  | — |  |  | 3,709 |  |  | 3,709 |
Other |  |  |  |  |  |  |  |  |
Advances to equity-accounted joint venture – long-term | Level 2 |  | 2,880 |  |  | (1) |  | 6,780 |  |  | (1)
Long-term debt, including current portion – non-public (note 7) | Level 2 |  | — |  |  | — |  |  | (21,184) |  |  | (21,078) |
Obligations related to finance leases, including current portion (note 8) | Level 2 |  | (139,599) |  |  | (143,968) |  |  | (532,760) |  |  | (533,977) |
(1)The advances to its equity-accounted joint venture, together with the Company’s investment in the equity-accounted joint venture, form the net aggregate carrying value of the Company’s interests in the equity-accounted joint venture in these consolidated financial statements. As at December 31, 2023 and December 31, 2022, the fair values of the individual components of such aggregate interests were not determinable.

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- Definition Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb) -SubTopic 10 -Topic 820 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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