Statement Of Cash Flows [Abstract]
| Concept |
2021-01-01 to 2021-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
As at 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
2020-01-01 to 2020-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of cash flows [abstract] | |||||||||||
| Cash flows from (used in) operating activities [abstract] | |||||||||||
| Profit (loss) |
35,000
USD
|
— |
11,600,000
USD
|
11,635,000
USD
|
11,600,000
USD
|
91,934,000
USD
|
— |
91,960,000
USD
|
25,000
USD
|
91,934,000
USD
|
— |
| Adjustments to reconcile profit (loss) [abstract] | |||||||||||
| Adjustments for income tax expense | — | — | — |
1,939,000
USD
|
— | — | — |
1,020,000
USD
|
— | — | — |
| Adjustments for depreciation and amortisation expense | — | — | — |
31,364,000
USD
|
— | — | — |
37,270,000
USD
|
— | — | — |
| Adjustments for impairment loss (reversal of impairment loss) recognised in profit or loss | — | — | — |
17,585,000
USD
|
— | — | — |
1,068,000
USD
|
— | — | — |
| Adjustments for losses (gains) on disposal of non-current assets | — | — | — |
48,000
USD
|
— | — | — |
91,000
USD
|
— | — | — |
| Cash flows from (used in) operations | — | — | — |
130,387,000
USD
|
— | — | — |
73,993,000
USD
|
— | — | — |
| Interest paid, classified as operating activities | — | — | — |
16,412,000
USD
|
— | — | — |
19,297,000
USD
|
— | — | — |
| Interest received, classified as operating activities | — | — | — |
351,000
USD
|
— | — | — |
1,957,000
USD
|
— | — | — |
| Income taxes paid (refund), classified as operating activities | — | — | — |
2,405,000
USD
|
— | — | — |
3,211,000
USD
|
— | — | — |
| Cash flows from (used in) operating activities | — | — | — |
111,921,000
USD
|
— | — | — |
53,443,000
USD
|
— | — | — |
| Cash flows from (used in) investing activities [abstract] | |||||||||||
| Proceeds from sales of property, plant and equipment, classified as investing activities | — | — | — |
298,000
USD
|
— | — | — |
91,000
USD
|
— | — | — |
| Purchase of intangible assets, classified as investing activities | — | — | — |
79,000
USD
|
— | — | — |
17,000
USD
|
— | — | — |
| Dividends received, classified as investing activities | — | — | — |
16,000
USD
|
— | — | — |
121,000
USD
|
— | — | — |
| Cash flows from (used in) investing activities | — | — | — |
125,528,000
USD
|
— | — | — |
4,651,000
USD
|
— | — | — |
| Cash flows from (used in) financing activities [abstract] | |||||||||||
| Proceeds from borrowings, classified as financing activities | — | — | — |
144,000,000
USD
|
— | — | — |
12,802,000
USD
|
— | — | — |
| Repayments of borrowings, classified as financing activities | — | — | — |
62,532,000
USD
|
— | — | — |
62,036,000
USD
|
— | — | — |
| Payments of lease liabilities, classified as financing activities | — | — | — |
1,554,000
USD
|
— | — | — |
17,392,000
USD
|
— | — | — |
| Dividends paid, classified as financing activities | — | — | — |
20,601,000
USD
|
— | — | — |
0
USD
|
— | — | — |
| Cash flows from (used in) financing activities | — | — | — |
57,248,000
USD
|
— | — | — |
74,931,000
USD
|
— | — | — |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — | — | — |
43,641,000
USD
|
— | — | — |
26,139,000
USD
|
— | — | — |
| Effect of exchange rate changes on cash and cash equivalents [abstract] | |||||||||||
| Effect of exchange rate changes on cash and cash equivalents | — | — | — |
706,000
USD
|
— | — | — |
1,708,000
USD
|
— | — | — |
| Cash and cash equivalents | — |
71,130,000
USD
|
— | — | — | — |
28,195,000
USD
|
— | — | — |
52,626,000
USD
|