Defined contribution plan (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
|
| Retirement Benefits [Abstract] | ||
| Pre-tax compensation of employees | 90.00% | |
| Percentage of employer discretion contribution | 100.00% | |
| Employer discretionary contribution amount | $ 1.0 | $ 0.6 |