Summary of Significant Accounting Policies - Revenue Recognition (Details) - USD ($) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
|
| Disaggregation of Revenue [Line Items] | |||
| Capitalized contract cost, amortization period | 5 years | ||
| Impairment loss | $ 0 | $ 0 | $ 0 |
| Total subscription revenues | |||
| Disaggregation of Revenue [Line Items] | |||
| Contract payment terms | 30 days | ||
| Professional services and other | |||
| Disaggregation of Revenue [Line Items] | |||
| Contract payment terms | 30 days | ||