Provisions - Additional Information (Details) |
1 Months Ended | 12 Months Ended |
|---|---|---|
|
May 31, 2017
USD ($)
|
Dec. 31, 2019
USD ($)
Lawsuit
|
|
| Disclosure Of Other Provisions [Line Items] | ||
| Cash payment for litigation settlment | $ 43,000,000 | |
| Class Counsels Attorneys Fees | 5,000,000 | |
| Number of lawsuits on alleging unlawful practices | Lawsuit | 6 | |
| Provision sought for award of damages per work infringed | $ 150,000 | |
| Bottom Of Range | ||
| Disclosure Of Other Provisions [Line Items] | ||
| Litigation settlement administration and notice costs | 1,000,000 | |
| Top of Range | ||
| Disclosure Of Other Provisions [Line Items] | ||
| Litigation settlement administration and notice costs | $ 2,000,000 |