Significant Accounting Policies - Amortization (Details) |
12 Months Ended |
|---|---|
Dec. 31, 2020 | |
| Capitalized software | Maximum | |
| Intangible assets | |
| Amortization period | 3 years |
| Other intangible assets | Minimum | |
| Intangible assets | |
| Amortization period | 1 year |
| Other intangible assets | Maximum | |
| Intangible assets | |
| Amortization period | 20 years |