Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2021-12-31 |
As at 2020-12-31 |
As at 2019-12-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Other property, plant and equipment |
1,274,000
USD
|
1,680,000
USD
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets other than goodwill [abstract] | |||
| Intangible assets other than goodwill |
82,000
USD
|
73,000
USD
|
— |
| Investments accounted for using equity method [abstract] | |||
| Investments accounted for using equity method |
94,678,000
USD
|
73,298,000
USD
|
— |
| Trade and other non-current receivables [abstract] | |||
| Non-current receivables due from related parties |
16,841,000
USD
|
29,813,000
USD
|
— |
| Trade and other non-current receivables |
0
USD
|
24,444,000
USD
|
— |
| Trade and other current receivables [abstract] | |||
| Current receivables due from related parties |
15,407,000
USD
|
11,500,000
USD
|
— |
| Trade and other current receivables |
55,154,000
USD
|
107,636,000
USD
|
— |
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
71,130,000
USD
|
28,195,000
USD
|
52,626,000
USD
|
| Non-current assets or disposal groups classified as held for sale or as held for distribution to owners [abstract] | |||
| Non-current assets or disposal groups classified as held for sale |
12,500,000
USD
|
10,000,000
USD
|
— |
| Miscellaneous current assets [abstract] | |||
| Current restricted cash and cash equivalents |
76,121,000
USD
|
75,575,000
USD
|
— |
| Current derivative financial assets |
920,000
USD
|
0
USD
|
— |
| Current investments |
1,849,000
USD
|
1,354,000
USD
|
— |
| Borrowings [abstract] | |||
| Non-current portion of non-current borrowings |
313,816,000
USD
|
276,588,000
USD
|
— |
| Current borrowings and current portion of non-current borrowings [abstract] | |||
| Current borrowings and current portion of non-current borrowings |
110,995,000
USD
|
65,031,000
USD
|
— |
| Non-current portion of non-current borrowings, by type [abstract] | |||
| Current borrowings and current portion of non-current borrowings, by type [abstract] | |||
| Trade and other current payables [abstract] | |||
| Trade and other current payables |
37,241,000
USD
|
37,632,000
USD
|
— |
| Miscellaneous non-current liabilities [abstract] | |||
| Non-current net defined benefit liability |
730,000
USD
|
1,715,000
USD
|
— |
| Issued capital [abstract] | |||
| Issued capital |
88,812,000
USD
|
88,812,000
USD
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
1,001,395,000
USD
|
931,924,000
USD
|
— |
| Liabilities |
464,892,000
USD
|
386,009,000
USD
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
234,083,000
USD
|
237,732,000
USD
|
— |
| Current liabilities |
149,546,000
USD
|
107,706,000
USD
|
— |
| Assets less current liabilities [abstract] |