Share-Based Compensation - Summary of Stock-based Compensation Expense (Detail) - USD ($)
$ in Thousands |
12 Months Ended |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
| Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |
|
|
|
| Share based compensation expense |
$ 27,405
|
$ 2,977
|
$ 3,404
|
| Research and Development Expense |
|
|
|
| Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |
|
|
|
| Share based compensation expense |
3,102
|
229
|
768
|
| Clinical Operations |
|
|
|
| Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |
|
|
|
| Share based compensation expense |
1,711
|
102
|
401
|
| Selling and Marketing Expense |
|
|
|
| Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |
|
|
|
| Share based compensation expense |
6,089
|
1,568
|
182
|
| General and Administrative Expense |
|
|
|
| Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |
|
|
|
| Share based compensation expense |
$ 16,503
|
$ 1,078
|
$ 2,053
|