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] | |||
| Construction in progress |
3,000
USD
|
3,000
USD
|
— |
| Intangible assets and goodwill [abstract] | |||
| Intangible assets other than goodwill [abstract] | |||
| Other intangible assets |
422,000
USD
|
939,000
USD
|
— |
| Miscellaneous non-current assets [abstract] | |||
| Non-current finance lease receivables |
72,000
USD
|
141,000
USD
|
— |
| Trade and other current receivables [abstract] | |||
| Current trade receivables |
1,267,000
USD
|
6,246,000
USD
|
— |
| Other current receivables |
3,759,000
USD
|
3,142,000
USD
|
— |
| Classes of current inventories [abstract] | |||
| Current inventories |
3,813,000
USD
|
4,726,000
USD
|
— |
| Classes of current inventories, alternative [abstract] | |||
| Cash and cash equivalents [abstract] | |||
| Other cash and cash equivalents |
9,855,000
USD
|
4,179,000
USD
|
— |
| Cash and cash equivalents |
9,855,000
USD
|
4,179,000
USD
|
19,731,000
USD
|
| Miscellaneous current assets [abstract] | |||
| Current restricted cash and cash equivalents |
1,278,000
USD
|
7,995,000
USD
|
— |
| Current finance lease receivables |
68,000
USD
|
68,000
USD
|
— |
| Borrowings [abstract] | |||
| Non-current portion of non-current borrowings |
24,295,000
USD
|
31,816,000
USD
|
— |
| Non-current portion of non-current borrowings, by type [abstract] | |||
| Trade and other current payables [abstract] | |||
| Current trade payables |
1,981,000
USD
|
1,461,000
USD
|
— |
| Retained earnings [abstract] | |||
| Retained earnings |
72,433,000
USD
|
77,361,000
USD
|
— |
| Net assets (liabilities) [abstract] | |||
| Assets |
40,162,000
USD
|
54,269,000
USD
|
— |
| Liabilities |
42,677,000
USD
|
61,686,000
USD
|
— |
| Net current assets (liabilities) [abstract] | |||
| Current assets |
20,041,000
USD
|
26,357,000
USD
|
— |
| Current liabilities |
13,048,000
USD
|
13,744,000
USD
|
— |
| Assets less current liabilities [abstract] |