Entity Wide Disclosures - Summary of Revenue by Major Source (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation Of Revenue [Line Items]
Total revenue	$ 1,142,377	$ 925,925	$ 860,969
Oncology
Disaggregation Of Revenue [Line Items]
Total revenue	362,846	297,675	256,766
Other
Disaggregation Of Revenue [Line Items]
Total revenue	267,415	215,370	196,159
Metabolic
Disaggregation Of Revenue [Line Items]
Total revenue	159,900	126,075	138,650
Central Nervous System
Disaggregation Of Revenue [Line Items]
Total revenue	121,548	88,393	91,746
Cardiology
Disaggregation Of Revenue [Line Items]
Total revenue	119,692	95,153	91,258
AVAI
Disaggregation Of Revenue [Line Items]
Total revenue	110,976	103,259	86,390
Revenue Net
Disaggregation Of Revenue [Line Items]
Total revenue	$ 1,142,377	$ 925,925	$ 860,969