Lessee, Operating Sublease, Term of Contract

No definition available.

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- Definition

Present value of lessee's discounted obligation for lease payments from finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479041/842-20-45-1

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-3

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-3

+ Details

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- Definition

The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 730
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482916/730-10-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 912
-SubTopic 730
-Name Accounting Standards Codification
-Section 25
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482517/912-730-25-1

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-Topic 985
-SubTopic 20
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481283/985-20-50-1

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Balance Type:	debit
Period Type:	duration

- Details

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- Details

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- Details

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- Details

Name:	srt_StatementGeographicalAxis=abos_CharlottesvilleVirginiaMember
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- Details

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- Details

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LEASES - Additional Information (Details) - USD ($) $ in Thousands		1 Months Ended	12 Months Ended
	Feb. 01, 2021	Oct. 31, 2023	Dec. 31, 2023	Dec. 31, 2022	Jan. 31, 2024	Sep. 11, 2023	Dec. 01, 2022	Sep. 28, 2022
Lessee, Lease, Description [Line Items]
Finance lease liability			$ 756
Research and development			$ 42,318	$ 32,361
Computer Equipment Lease
Lessee, Lease, Description [Line Items]
Research and development		$ 700
Computer Equipment Lease \| Subsequent Event
Lessee, Lease, Description [Line Items]
Finance lease liability					$ 800
Newton, Massachusetts
Lessee, Lease, Description [Line Items]
Operating lease term (in months)						38 months
Charlottesville, Virginia
Lessee, Lease, Description [Line Items]
Operating lease term (in months)								15 months
Charlottesville, Virginia
Lessee, Lease, Description [Line Items]
Operating lease term (in months)							12 months
Carmel, Indiana \| Maximum
Lessee, Lease, Description [Line Items]
Sublease, term of contract (in years)	1 year