Equity Incentive Plans - Summary of Stock Option Activity (Parenthetical) (Details)	6 Months Ended
Jun. 30, 2017 shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Number of canceled options excluded	10,408

Options forfeited from legacy share based compensation plans that are excluded from returning back to the current share based compensation plan available for future grant.

No definition available.

Name:	adro_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriodExcluded
Namespace Prefix:	adro_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration