Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Investment in Non-Consolidated Affiliate (Details)

v3.20.2
Investment in Non-Consolidated Affiliate (Details)
May 22, 2020
USD ($)
installment
Sep. 30, 2020
USD ($)
Dec. 31, 2019
USD ($)
Schedule of Equity Method Investments [Line Items]      
Carrying amount of investment in non-consolidated affiliate   $ 959,428,000 $ 709,506,000
Variable Interest Entity, Not Primary Beneficiary      
Schedule of Equity Method Investments [Line Items]      
Number of installment payments | installment 2    
Carrying amount of investment in non-consolidated affiliate   25,600,000  
Variable Interest Entity, Not Primary Beneficiary | Preference Shares      
Schedule of Equity Method Investments [Line Items]      
Carrying amount of investment in non-consolidated affiliate   19,200,000  
Variable Interest Entity, Not Primary Beneficiary | Purchase Option      
Schedule of Equity Method Investments [Line Items]      
Carrying amount of investment in non-consolidated affiliate   5,800,000  
Variable Interest Entity, Not Primary Beneficiary | Transaction Costs      
Schedule of Equity Method Investments [Line Items]      
Carrying amount of investment in non-consolidated affiliate   $ 600,000  
Affiliated Entity | Strategic Alliance With Inivata Limited      
Schedule of Equity Method Investments [Line Items]      
Line of credit facility maximum borrowing capacity $ 15,000,000    
Stated interest rate (as a percent) 0.00%    
Affiliated Entity | Variable Interest Entity, Not Primary Beneficiary      
Schedule of Equity Method Investments [Line Items]      
Investment in minority interest $ 25,000,000