Subclassifications Of Assets, Liabilities And Equities [Abstract]
| Concept |
As at 2023-12-31 |
As at 2022-12-31 |
As at 2021-12-31 |
|---|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | |||
| Property, plant and equipment [abstract] | |||
| Property, plant and equipment |
-
USD
|
309,000
USD
|
— |
| Trade and other current receivables [abstract] | |||
| Current trade receivables |
21,000
USD
|
52,000
USD
|
— |
| Other current receivables |
272,000
USD
|
1,449,000
USD
|
— |
| Categories of non-current financial assets [abstract] | |||
| Non-current financial assets at fair value through other comprehensive income [abstract] | |||
| Non-current investments in equity instruments designated at fair value through other comprehensive income |
95,215,000
USD
|
89,398,000
USD
|
— |
| Cash and cash equivalents [abstract] | |||
| Cash and cash equivalents |
14,576,000
USD
|
18,373,000
USD
|
79,001,000
USD
|
| Trade and other current payables [abstract] | |||
| Current trade payables |
13,000
USD
|
172,000
USD
|
— |
| Miscellaneous current liabilities [abstract] | |||
| Other current liabilities |
1,073,000
USD
|
2,052,000
USD
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
110,193,000
USD
|
109,800,000
USD
|
— |
| Liabilities |
1,170,000
USD
|
2,414,000
USD
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
14,869,000
USD
|
19,874,000
USD
|
— |
| Current liabilities |
1,170,000
USD
|
2,331,000
USD
|
— |
| Assets less current liabilities [abstract] |