Significant Accounting Policies - Intangible Assets Other Than Goodwill, Foreign Currency and Segment Reporting (Details) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2021
USD ($)
segment
|
Dec. 31, 2020
USD ($)
|
Dec. 31, 2019
USD ($)
|
|
| Foreign currency | |||
| Currency translation adjustments | $ | $ 78,196 | $ 148,547 | $ (19,029) |
| Segment reporting | |||
| Number of principal business segments | segment | 2 | ||
| Minimum | |||
| Intangible assets other than goodwill | |||
| Estimated useful lives of intangible assets | 3 years | ||
| Maximum | |||
| Intangible assets other than goodwill | |||
| Estimated useful lives of intangible assets | 10 years | ||