Leases (Tables)
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12 Months Ended |
Dec. 31, 2025 |
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| Leases |
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| Schedule of lease obligations |
Lease liabilities as of December 31 are as follows: | | | | | | | | | | | | | | | 2025 | | 2024 | | | Non- | | | | | | Non- | | | | | | | Current | | Current | | Total | | Current | | Current | | Total | | | US$'000 | | US$'000 | | US$'000 | | US$'000 | | US$'000 | | US$'000 | Tolling agreement lease liability | | 25,233 | | 2,741 | | 27,974 | | 32,009 | | 3,463 | | 35,472 | Other leases | | 32,196 | | 9,513 | | 41,709 | | 24,576 | | 9,404 | | 33,980 | Total | | 57,429 | | 12,254 | | 69,683 | | 56,585 | | 12,867 | | 69,452 |
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| Schedule of effect on components of consolidated financial statements |
| | | | | | | 2025 | | 2024 | | | US$'000 | | US$'000 | Balance at January 1, | | (69,452) | | (66,250) | Additions | | (14,671) | | (17,486) | Lease modification | | 12,161 | | — | Disposals and other | | 330 | | 224 | Interest | | (5,906) | | (5,935) | Lease payments | | 16,185 | | 16,201 | Exchange differences | | (8,330) | | 3,794 | Balance at December 31, | | (69,683) | | (69,452) |
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| Schedule of leases presented in the statement of financial position |
| | | | | | | 2025 | | 2024 | | | US$'000 | | US$'000 | Non-current assets (Note 8) | | | | | Leased land and buildings | | 34,859 | | 28,436 | Leased plant and machinery | | 58,497 | | 51,524 | Accumulated depreciation | | (52,955) | | (46,286) | | | | | | Non-current liabilities | | | | | Lease liabilities | | (57,429) | | (56,585) | | | | | | Current liabilities | | | | | Lease liabilities | | (12,254) | | (12,867) |
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| Schedule of leases presented in the consolidated income statement |
| | | | | | | 2025 | | 2024 | | | US$'000 | | US$'000 | Depreciation and amortization charges | | | | | Depreciation of right-of-use assets | | 6,669 | | 3,746 | | | | | | Finance costs | | | | | Interest expense on lease liabilities | | 5,906 | | 5,935 | | | | | | Exchange differences | | | | | Currency translation losses on lease liabilities | | (8,330) | | 3,794 | Currency translation gains on right-of-use assets | | 2,902 | | (1,055) |
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| Schedule of leases presented in the statement of cash flows |
| | | | | | | 2025 | | 2024 | | | US$'000 | | US$'000 | Payments for: | | | | | Principal | | 10,279 | | 10,266 | Interest | | 5,906 | | 5,935 |
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