Collaboration Agreements and Related Revenue Matters - Summary of Changes in Contract Assets and Liabilities (Detail) - Deferred Revenue [Member] $ in Thousands	12 Months Ended
Jun. 30, 2019 USD ($)
Contract with Customer, Asset and Liability [Line Items]
Balance at Beginning of Period	$ 29,521
Additions	10,000
Deletions	(39,521)
Balance at End of Period	$ 0

Amount of total contract liabilities for the obligation to transfer good or service to customer for which consideration as been received or is receivable, net of total contract assets for the right to consideration in exchange for good or service transferred to customer.

No definition available.

Name:	agtc_ContractWithCustomerAssetLiabilityNet
Namespace Prefix:	agtc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant