Number of development milestones.

No definition available.

Name:	acrv_NumberOfDevelopmentMilestones
Namespace Prefix:	acrv_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Obligation to pay upon achievement of specified development milestones.

+ References

No definition available.

+ Details

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Namespace Prefix:	acrv_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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

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Period Type:	duration

- Details

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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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- Details

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Subsequent Events - (Additional Information) (Details) $ in Millions	1 Months Ended		3 Months Ended	12 Months Ended
	Nov. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)	Mar. 31, 2023 USD ($) Milestone	Dec. 31, 2022 USD ($)
Subsequent Event [Line Items]
Weighted-average recognition period				3 years 1 month 6 days
Akoya Agreement
Subsequent Event [Line Items]
Obligation to pay upon achievement of specified development milestones		$ 10.3
Scenario Forecast \| Akoya Agreement
Subsequent Event [Line Items]
Number of development milestones \| Milestone			2
Obligation to pay upon achievement of specified development milestones			$ 0.5
RSUs
Subsequent Event [Line Items]
Unrecognized stock-based compensation expense	$ 22.1			$ 21.4
RSUs \| Maximum
Subsequent Event [Line Items]
Weighted-average recognition period	4 years
RSUs \| Minimum
Subsequent Event [Line Items]
Weighted-average recognition period	3 years