Entity Wide Disclosures - Summary of Revenue by Major Source (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation Of Revenue [Line Items]
Total revenue	$ 330,947	$ 259,965
Oncology
Disaggregation Of Revenue [Line Items]
Total revenue	105,213	79,138
Other
Disaggregation Of Revenue [Line Items]
Total revenue	70,417	68,938
Metabolic
Disaggregation Of Revenue [Line Items]
Total revenue	48,116	32,495
Central Nervous System
Disaggregation Of Revenue [Line Items]
Total revenue	38,487	24,812
Cardiology
Disaggregation Of Revenue [Line Items]
Total revenue	37,396	23,762
AVAI
Disaggregation Of Revenue [Line Items]
Total revenue	31,318	30,820
Revenue Net
Disaggregation Of Revenue [Line Items]
Total revenue	$ 330,947	$ 259,965