Statement Of Changes In Net Assets Available For Benefits [Abstract]
| Concept |
2021-01-01 to 2021-12-31 |
2020-01-01 to 2020-12-31 |
|---|---|---|
| Statement of changes in net assets available for benefits [abstract] | ||
| Reconciliation of changes in net assets available for benefits [abstract] | ||
| Changes in net assets available for benefits [abstract] | ||
| Administrative expenses |
14,006,000
USD
|
12,857,000
USD
|
| Other expense, by function |
91,107,000
USD
|
102,387,000
USD
|
| Tax expense (income) |
445,000
USD
|
267,000
USD
|
| Profit (loss) on disposal of investments and changes in value of investments |
-
USD
|
70,000
USD
|