Investment in Non-Consolidated Affiliate (Details) $ in Thousands				3 Months Ended	12 Months Ended
	Sep. 30, 2021 USD ($)	Jun. 18, 2021 USD ($)	May 22, 2020 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	May 22, 2021 USD ($)	Jan. 31, 2021 USD ($)	May 31, 2020 USD ($)
Schedule of Equity Method Investments [Line Items]
Carrying amount of investment in non-consolidated affiliate					$ 1,869,778	$ 988,331
Investment in non-consolidated affiliate					0	29,555
Gain on settlement under line of credit					4,700
Gain on investment in and loan receivable from non-consolidated affiliate, net					109,260	3,955	$ 0
Inivata
Schedule of Equity Method Investments [Line Items]
Fair value of previously-held equity interest	$ 64,900	$ 64,906
Fair value of Purchase Option	$ 74,300	74,300
Unrealized gain on investment in non-consolidated affiliate, net					104,600
Measurement period adjustments, net assets acquired		17,750			17,800
Gain on investment in and loan receivable from non-consolidated affiliate, net					$ 109,300	4,000
Variable Interest Entity, Not Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Carrying amount of investment in non-consolidated affiliate						29,600
Unrealized gain on remeasurement						4,000
Preference Shares | Variable Interest Entity, Not Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Carrying amount of investment in non-consolidated affiliate						25,000
Investment in non-consolidated affiliate									$ 30,000
Preference Shares | Variable Interest Entity, Not Primary Beneficiary | Measurement Input, Risk Free Interest Rate
Schedule of Equity Method Investments [Line Items]
Purchase option, measurement input (as a percent)					0.0017
Preference Shares | Variable Interest Entity, Not Primary Beneficiary | Measurement Input, Price Volatility
Schedule of Equity Method Investments [Line Items]
Purchase option, measurement input (as a percent)					0.840
Preference Shares | Variable Interest Entity, Not Primary Beneficiary | Measurement Input, Expected Dividend Rate
Schedule of Equity Method Investments [Line Items]
Purchase option, measurement input (as a percent)					0.000
Purchase Option | Variable Interest Entity, Not Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Carrying amount of investment in non-consolidated affiliate						$ 4,600
Purchase Option | Variable Interest Entity, Not Primary Beneficiary | Measurement Input, Risk Free Interest Rate
Schedule of Equity Method Investments [Line Items]
Purchase option, measurement input (as a percent)					0.0017	0.0017
Purchase Option | Variable Interest Entity, Not Primary Beneficiary | Measurement Input, Price Volatility
Schedule of Equity Method Investments [Line Items]
Purchase option, measurement input (as a percent)					0.840	0.840
Purchase Option | Variable Interest Entity, Not Primary Beneficiary | Measurement Input, Expected Dividend Rate
Schedule of Equity Method Investments [Line Items]
Purchase option, measurement input (as a percent)					0.000	0.000
Affiliated Entity
Schedule of Equity Method Investments [Line Items]
Net unrealized loss from remeasurement of investment				$ 5,000
Amount outstanding under line of credit		10,300
Affiliated Entity | Line of Credit
Schedule of Equity Method Investments [Line Items]
Line of credit facility maximum borrowing capacity			$ 15,000					$ 15,000
Interest rate per annum (as a percent)					0.00%
Imputed interest rate (as a percent)									8.33%
Loan with imputed interest, discount)									$ 5,000
Additional investment in non-consolidated affiliate									5,000
Present value of loan receivable with imputed interest									$ 10,000
Amount outstanding under line of credit		10,300
Affiliated Entity | Variable Interest Entity, Not Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Investment in minority interest		29,600	25,000	29,600						$ 25,000
Transaction costs			600
Affiliated Entity | Variable Interest Entity, Not Primary Beneficiary | Line of Credit
Schedule of Equity Method Investments [Line Items]
Interest income from loan receivable					$ 400
Affiliated Entity | Preference Shares | Variable Interest Entity, Not Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Investment in minority interest		25,000	19,600	25,000
Affiliated Entity | Purchase Option | Variable Interest Entity, Not Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Investment in minority interest		$ 4,600	$ 6,000	$ 4,600