Accounting Principles Applied in the Preparation of the Consolidated Financial Statements - Summary of Geographical Analysis of Operating Expenses (Detail) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
|
| Disclosure Of Geographical Areas [Line Items] | |||
| Total operating expenses | $ 74,627 | $ 79,718 | $ 107,111 |
| Switzerland [Member] | |||
| Disclosure Of Geographical Areas [Line Items] | |||
| Total operating expenses | 68,977 | 77,476 | 102,492 |
| USA [Member] | |||
| Disclosure Of Geographical Areas [Line Items] | |||
| Total operating expenses | $ 5,650 | $ 2,242 | $ 4,619 |