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v3.22.1

Consolidated Statement of Cash Flow (Tables) | 12 Months Ended
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Dec. 31, 2021
Disclosure Of Consolidated Statement Of Cash Flow [Abstract] |
Schedule of Non-cash Transactions Related to the Consolidated Statement of Cash Flow | The following chart describes non-cash transactions related to the Consolidated Statement of Cash Flow: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
Amounts in US$‘000 |  | 2021 |  | 2020 |  | 2019
(Decrease) Increase in asset retirement obligation |  | (651) |  | (1,812) |  | 13,299
(Decrease) Increase in provisions for other long-term liabilities |  | (443) |  | (1,051) |  | 1,867
Purchase of property, plant and equipment |  | — |  | — |  | (733)
Schedule of Changes in Working Capital Shown in the Consolidated Statement of Cash Flow | Changes in working capital shown in the Consolidated Statement of Cash Flow are disclosed as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
Amounts in US$‘000 |  | 2021 |  | 2020 |  | 2019
Decrease (Increase) in Inventories |  | 1,241 |  | 1,220 |  | (1,675)
(Increase) Decrease in Trade receivables |  | (23,290) |  | 3,190 |  | (27,839)
(Increase) Decrease in Prepayments and other receivables and Other assets |  | (13,817) |  | 38,742 |  | (27,547)
Increase (Decrease) in Trade and other payables |  | 26,515 |  | (48,392) |  | 11,964
​ |  | (9,351) |  | (5,240) |  | (45,097)
​
Schedule of reconciliation of liabilities arising from cash flow activities | The following chart shows the movements in the borrowings and lease liabilities for each of the periods presented:
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Lease | ​ | ​
Amounts in US$‘000 | ​ | Borrowings | ​ | Liabilities | ​ | Total
As of January 1, 2019 | ​ | 447,002 | ​ | — | ​ | 447,002
Initial recognition of lease liabilities | ​ | — | ​ | 14,610 | ​ | 14,610
Addition to lease liabilities | ​ | — | ​ | 2,496 | ​ | 2,496
Accrual of borrowing's interests | ​ | 29,940 | ​ | — | ​ | 29,940
Exchange difference | ​ | 5 | ​ | 566 | ​ | 571
Foreign currency translation | ​ | (639) | ​ | 7 | ​ | (632)
Unwinding of discount | ​ | — | ​ | 419 | ​ | 419
Principal paid | ​ | (9,790) | ​ | — | ​ | (9,790)
Interest paid | ​ | (29,099) | ​ | — | ​ | (29,099)
Lease payments | ​ | — | ​ | (4,855) | ​ | (4,855)
As of December 31, 2019 | ​ | 437,419 | ​ | 13,243 | ​ | 450,662
Proceeds from borrowings | ​ | 350,000 | ​ | — | ​ | 350,000
Debt issuance costs paid | ​ | (7,507) | ​ | — | ​ | (7,507)
Acquisitions (Note 36.1) | ​ | — | ​ | 17,851 | ​ | 17,851
Addition to lease liabilities | ​ | — | ​ | 561 | ​ | 561
Accrual of borrowing's interests | ​ | 48,232 | ​ | — | ​ | 48,232
Exchange difference | ​ | — | ​ | 466 | ​ | 466
Foreign currency translation | ​ | (2,389) | ​ | (1,641) | ​ | (4,030)
Unwinding of discount | ​ | — | ​ | 1,247 | ​ | 1,247
Principal paid | ​ | (3,575) | ​ | — | ​ | (3,575)
Interest paid | ​ | (37,594) | ​ | — | ​ | (37,594)
Lease payments | ​ | — | ​ | (9,380) | ​ | (9,380)
As of December 31, 2020 | ​ | 784,586 | ​ | 22,347 | ​ | 806,933
Proceeds from borrowings | ​ | 172,174 | ​ | — | ​ | 172,174
Debt issuance costs paid | ​ | (2,019) | ​ | — | ​ | (2,019)
Addition to lease liabilities | ​ | — | ​ | 5,288 | ​ | 5,288
Accrual of borrowing's interests | ​ | 44,323 | ​ | — | ​ | 44,323
Exchange difference | ​ | (581) | ​ | (365) | ​ | (946)
Foreign currency translation | ​ | (265) | ​ | (461) | ​ | (726)
Unwinding of discount | ​ | — | ​ | 1,453 | ​ | 1,453
Principal paid | ​ | (274,934) | ​ | — | ​ | (274,934)
Interest paid | ​ | (42,592) | ​ | — | ​ | (42,592)
Borrowings cancellation costs | ​ | 6,308 | ​ | — | ​ | 6,308
Borrowings cancellation costs paid | ​ | (12,908) | ​ | — | ​ | (12,908)
Lease payments | ​ | — | ​ | (7,518) | ​ | (7,518)
As of December 31, 2021 | ​ | 674,092 | ​ | 20,744 | ​ | 694,836

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