Fair Value of Financial Assets and Liabilities - Additional Information (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Fair Value Disclosures [Abstract]
Fair value input transfer between levels	$ 0	$ 0

The fair value input amount of assets and liabilities between levels.

No definition available.

Name:	avro_FairValueInputAmountTransferBetweenLevels
Namespace Prefix:	avro_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant