Cash Equivalents and Short-Term Investments - Additional Information (Detail)	Sep. 30, 2017 USD ($)
Available For Sale Securities [Abstract]
Gross unrealized losses on available-for-sale-securities temporary	$ 100,000
Available-for-sale securities other-than-temporarily impaired	$ 0

Available for sale securities accumulated gross unrealized loss before tax temporary.

No definition available.

Name:	advm_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTaxTemporary
Namespace Prefix:	advm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant