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Commitments and Contingencies - Additional Information (Details) $ in Thousands						1 Months Ended	3 Months Ended		9 Months Ended
	Apr. 22, 2025 USD ($)	Dec. 31, 2024 USD ($)	Jan. 26, 2024 USD ($)	May 13, 2022 complaint	Mar. 14, 2022 USD ($)	Jul. 31, 2023	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Dec. 23, 2024 advertisement	Dec. 31, 2023 USD ($)
Loss Contingencies [Line Items]
Operating leases right-of-use assets		$ 24,340					$ 24,047		$ 24,047
Short-term lease liability		6,103					6,432		6,432
Operating lease liability, less current portion		22,263					$ 21,212		$ 21,212
Operating lease, liability, current, statement of financial position [Extensible Enumeration]							Accrued and other liabilities		Accrued and other liabilities
Litigation settlement expense							$ 0	$ 0	$ 5,710	$ 0
Insurance matter									$ 15,000
iBox License and Collaboration Agreement
Loss Contingencies [Line Items]
License period						4 years
Minimum
Loss Contingencies [Line Items]
Remaining lease terms							8 months 1 day		8 months 1 day
Maximum
Loss Contingencies [Line Items]
Remaining lease terms							7 years 4 months 2 days		7 years 4 months 2 days
CAREDX, INC. vs Natera Inc.
Loss Contingencies [Line Items]
Damages awarded					$ 44,900
Number of claims field | complaint				2
Trial duration			5 days
Loss contingency, damages awarded, value			$ 96,300
Liability for damages awarded												$ 96,300
Loss contingency accrual, derecognized		$ 96,300
Range of possible loss (up to)								$ 96,300		$ 96,300
CAREDX, INC. vs Natera Inc. | Compensatory Damages
Loss Contingencies [Line Items]
Damages awarded					21,200
Number of advertisements | advertisement											8
CAREDX, INC. vs Natera Inc. | Punitive Damages
Loss Contingencies [Line Items]
Damages awarded					$ 23,700
Securities Class Action
Loss Contingencies [Line Items]
Settlement amount	$ 20,250
Accrued litigation settlement expense							$ 20,250		$ 20,250
Expected insurance proceeds							$ 14,900		14,900
Litigation settlement expense									$ 5,400

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