Commitments and Contingencies - Additional Information (Details) $ in Thousands			1 Months Ended
	May 13, 2022 complaint	Mar. 14, 2022 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2014 milestone_payment	Dec. 31, 2021 USD ($)
Loss Contingencies [Line Items]
Operating lease right-of-use asset			$ 15,841		$ 17,993
Short-term lease liability			2,989		3,958
Operating lease liability, less current portion			16,065		$ 17,394
Number of milestone payments | milestone_payment				6
Derecognition of ROU and lease liability			$ 500
Operating lease, extension period			2 years
CAREDX, INC. vs Natera Inc.
Loss Contingencies [Line Items]
Damages awarded		$ 44,900
Number of complaints | complaint	2
CAREDX, INC. vs Natera Inc. | Compensatory Damages
Loss Contingencies [Line Items]
Damages awarded		21,200
CAREDX, INC. vs Natera Inc. | Punitive Damages
Loss Contingencies [Line Items]
Damages awarded		$ 23,700