Statement Of Cash Flows [Abstract]
| Concept |
As at 2022-12-31 |
2022-01-01 to 2022-12-31 |
As at 2021-12-31 |
2021-01-01 to 2021-12-31 |
As at 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] | |||||||
| Interest paid, classified as operating activities | — |
3,366,000
USD
|
— |
3,382,000
USD
|
— |
2,651,000
USD
|
— |
| Interest received, classified as operating activities | — |
3,460,000
USD
|
— |
214,000
USD
|
— |
1,155,000
USD
|
— |
| Income taxes paid (refund), classified as operating activities | — |
20,696,000
USD
|
— |
27,766,000
USD
|
— |
20,737,000
USD
|
— |
| Other inflows (outflows) of cash, classified as operating activities | — |
359,000
USD
|
— |
103,000
USD
|
— |
7,000
USD
|
— |
| Cash flows from (used in) operating activities | — |
178,792,000
USD
|
— |
158,274,000
USD
|
— |
131,827,000
USD
|
— |
| Cash flows from (used in) investing activities [abstract] | |||||||
| Other cash receipts from sales of equity or debt instruments of other entities, classified as investing activities | — |
118,710,000
USD
|
— |
218,125,000
USD
|
— |
350,586,000
USD
|
— |
| Other cash payments to acquire equity or debt instruments of other entities, classified as investing activities | — |
5,000,000
USD
|
— |
500,000
USD
|
— |
1,150,000
USD
|
— |
| Proceeds from sales of property, plant and equipment, classified as investing activities | — |
—
USD
|
— |
30,000
USD
|
— |
—
USD
|
— |
| Purchase of property, plant and equipment, classified as investing activities | — |
2,176,000
USD
|
— |
5,571,000
USD
|
— |
5,170,000
USD
|
— |
| Purchase of intangible assets, classified as investing activities | — |
—
USD
|
— |
90,000
USD
|
— |
254,000
USD
|
— |
| Cash flows from (used in) investing activities | — |
107,223,000
USD
|
— |
197,375,000
USD
|
— |
364,478,000
USD
|
— |
| Cash flows from (used in) financing activities [abstract] | |||||||
| Payments from changes in ownership interests in subsidiaries that do not result in loss of control | — |
—
USD
|
— |
806,000
USD
|
— |
—
USD
|
— |
| Payments of lease liabilities, classified as financing activities | — |
4,025,000
USD
|
— |
3,375,000
USD
|
— |
2,908,000
USD
|
— |
| Other inflows (outflows) of cash, classified as financing activities | — |
41,000
USD
|
— |
5,000
USD
|
— |
—
USD
|
— |
| Cash flows from (used in) financing activities | — |
29,827,000
USD
|
— |
22,727,000
USD
|
— |
38,869,000
USD
|
— |
| Increase (decrease) in cash and cash equivalents before effect of exchange rate changes | — |
315,842,000
USD
|
— |
61,827,000
USD
|
— |
271,520,000
USD
|
— |
| Cash and cash equivalents |
149,866,000
USD
|
— |
465,708,000
USD
|
— |
403,881,000
USD
|
— |
132,360,000
USD
|