Accrued Liabilities - Additional Information (Details) $ in Millions	Dec. 31, 2020 USD ($)
Payables And Accruals [Abstract]
Accrued tax withholding liability related to unsettled option exercises	$ 1.4

Accrued tax withholding liability related to unsettled option exercises.

No definition available.

Name:	adpt_AccruedTaxWithholdingLiabilityRelatedToUnsettledOptionExercises
Namespace Prefix:	adpt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant