| Document and Entity Information | Jun. 14, 2024 |
| Cover [Abstract] | |
| Amendment Flag | true |
| Entity Central Index Key | 0001681087 |
| Document Type | 8-K/A |
| Document Period End Date | Jun. 14, 2024 |
| Entity Registrant Name | AVROBIO, Inc. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-38537 |
| Entity Tax Identification Number | 81-0710585 |
| Entity Address, Address Line One | One Broadway |
| Entity Address, Address Line Two | 14th Floor |
| Entity Address, City or Town | Cambridge |
| Entity Address, State or Province | MA |
| Entity Address, Postal Zip Code | 02142 |
| City Area Code | (617) |
| Local Phone Number | 914-8420 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Common Stock, $0.0001 par value per share |
| Trading Symbol | AVRO |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Amendment Description | As previously disclosed, on January 30, 2024, AVROBIO, Inc., a Delaware corporation (“AVRO” or the “Company”), entered into an Agreement and Plan of Merger and Reorganization (the “Merger Agreement”) by and among AVRO, Alpine Merger Subsidiary, Inc., a Delaware corporation and a wholly owned subsidiary of AVRO (“Merger Sub”), and Tectonic Therapeutic, Inc., a Delaware corporation (“Tectonic”), pursuant to which, and subject to the satisfaction or waiver of the conditions set forth in the Merger Agreement, Merger Sub will merge with and into Tectonic (the “Merger”), with Tectonic continuing as a wholly owned subsidiary of AVRO and the surviving corporation of the Merger. |
