Investment in Non-Consolidated Affiliate (Details) $ in Thousands		3 Months Ended		6 Months Ended		12 Months Ended
	May 22, 2020 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)	Jun. 18, 2021 USD ($)	Jun. 17, 2021 USD ($)	May 22, 2021 USD ($)	Mar. 31, 2021 USD ($)	Jan. 31, 2021 USD ($)	May 31, 2020 USD ($)
Schedule of Equity Method Investments [Line Items]
Carrying amount of investment in non-consolidated affiliate		$ 1,896,311		$ 1,896,311		$ 988,331
Investment in non-consolidated affiliate		0		0		29,555
Gain on investment in and loan receivable from non-consolidated affiliate, net		(96,534)	$ 0	$ (91,510)	$ 0
Variable Interest Entity, Not Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Carrying amount of investment in non-consolidated affiliate						29,600
Unrealized loss on investment in non-consolidated affiliate						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, Price Volatility
Schedule of Equity Method Investments [Line Items]
Purchase option, measurement input (as a percent)				0.84
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, Expected Dividend Rate
Schedule of Equity Method Investments [Line Items]
Purchase option, measurement input (as a percent)				0
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, Price Volatility
Schedule of Equity Method Investments [Line Items]
Purchase option, measurement input (as a percent)				0.84		0.84
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, Expected Dividend Rate
Schedule of Equity Method Investments [Line Items]
Purchase option, measurement input (as a percent)				0		0
Inivata Limited
Schedule of Equity Method Investments [Line Items]
Net unrealized loss for remeasurement of investment		5,000
VIE, gain (loss)		91,800
Amount outstanding under line of credit							$ 10,300
Inivata Limited | Line of Credit
Schedule of Equity Method Investments [Line Items]
Line of credit facility maximum borrowing capacity									$ 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
Gain on settlement of line of credit		4,700
Inivata Limited | Variable Interest Entity, Not Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Investment in minority interest	$ 25,000						29,600			$ 29,600		$ 25,000
Transaction costs	600
Inivata Limited | Variable Interest Entity, Not Primary Beneficiary | Line of Credit
Schedule of Equity Method Investments [Line Items]
Interest income from loan receivable		$ 200		$ 400
Inivata Limited | Preference Shares | Variable Interest Entity, Not Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Investment in minority interest	19,600						25,000	$ 62,900		25,000
Inivata Limited | Purchase Option | Variable Interest Entity, Not Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Investment in minority interest	$ 6,000						$ 4,600	$ 58,500		$ 4,600