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Revenue - Operating Leases (Details) $ in Thousands | Dec. 31, 2024 USD ($) vessel | Dec. 31, 2023 USD ($)
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Property Subject to or Available for Operating Lease [Line Items] |  |
Lessor, Operating Lease, Payments to be Received, Next Twelve Months | $ 14,400 |
At cost, less accumulated depreciation of $570.9 million (2023 – $440.9 million) | 1,132,109 | $ 929,237
Accumulated depreciation | 570,900 | 440,900
Lessor, Operating Lease, Payments to be Received, Two Years | 7,400 |
Lessor, Operating Lease, Payment to be Received, Year Five | 2,400 |
Lessor, Operating Lease, Payment to be Received, Year Four | 7,400 |
Lessor, Operating Lease, Payments to be Received, Three Years | 7,400 |
Transportation Equipment |  |
Property Subject to or Available for Operating Lease [Line Items] |  |
At cost, less accumulated depreciation of $570.9 million (2023 – $440.9 million) | 26,400 | 38,900
Property, Plant and Equipment, Gross | 34,800 | 51,100
Accumulated depreciation | $ 8,400 | $ 12,200
Aframax/LR2 and Suezmax Charters Out | Time-charter [Member] | Charters out expiring in 2025 and 2029 |  |
Property Subject to or Available for Operating Lease [Line Items] |  |
Number of vessels | vessel | 2 |

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