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Subsequent Events - Additional Information (Details) - Subsequent Event [Member] $ in Millions	Jul. 19, 2021 USD ($)
Subsequent Event [Line Items]
Sublease Agreement Description	The term of the sublease will be from September 1, 2021 through July 30, 2026. The aggregate base rent due to the Company under the sublease is approximately $3.5 million.
Sublease rent expense	$ 3.5

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- Definition

Sublease Agreement Description.

+ References

No definition available.

+ Details

Name:	acet_SubleaseAgreementDescription
Namespace Prefix:	acet_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

The total amount of sublease rental income recognized during the period that reduces the entity's rent expense incurred under operating leases.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 10
-Section 55
-Paragraph 40
-Subparagraph (Note 3)
-URI http://asc.fasb.org/extlink&oid=121580752&loc=d3e38371-112697

+ Details

Name:	us-gaap_OperatingLeasesRentExpenseSubleaseRentals1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

Name:	us-gaap_SubsequentEventLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: