Annual report pursuant to Section 13 and 15(d)

Assets and Liabilities Measured at Fair Value - Schedule of Assets and Liabilities (Details)

v3.20.4
Assets and Liabilities Measured at Fair Value - Schedule of Assets and Liabilities (Details) - Recurring - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash equivalents $ 1,368,176 $ 48,174
Indemnification obligation 344,643  
Exchangeable senior debentures 1,472,125  
Quoted prices in active markets for identical assets (Level 1)    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash equivalents 1,368,176 $ 48,174
Significant other observable inputs (Level 2)    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Indemnification obligation 344,643  
Exchangeable senior debentures $ 1,472,125