Significant Accounting Policies - Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Financial assets carried at fair value:
Total cash and cash equivalents	$ 70,542	$ 61,761
Marketable securities:
Marketable securities	16,784	0
Total cash, cash equivalents and marketable securities	87,326	61,761
Fair Value Measurements Recurring
Marketable securities:
Marketable securities	16,784
Total cash, cash equivalents and marketable securities	87,326	61,761
Financial liabilities carried at fair value:
Total PIPE Warrant liability		199
Fair Value Measurements Recurring \| Corporate Debt Securities
Marketable securities:
Marketable securities	16,784
Fair Value Measurements Recurring \| Level 1
Marketable securities:
Marketable securities	0
Total cash, cash equivalents and marketable securities	70,542	61,761
Financial liabilities carried at fair value:
Total PIPE Warrant liability		0
Fair Value Measurements Recurring \| Level 1 \| Corporate Debt Securities
Marketable securities:
Marketable securities	0
Fair Value Measurements Recurring \| Level 2
Marketable securities:
Marketable securities	16,784
Total cash, cash equivalents and marketable securities	16,784	0
Financial liabilities carried at fair value:
Total PIPE Warrant liability		0
Fair Value Measurements Recurring \| Level 2 \| Corporate Debt Securities
Marketable securities:
Marketable securities	16,784
Fair Value Measurements Recurring \| Level 3
Marketable securities:
Marketable securities	0
Total cash, cash equivalents and marketable securities	0	0
Financial liabilities carried at fair value:
Total PIPE Warrant liability		199
Fair Value Measurements Recurring \| Level 3 \| Corporate Debt Securities
Marketable securities:
Marketable securities	0
Fair Value Measurements Recurring \| Cash and money market funds
Financial assets carried at fair value:
Total cash and cash equivalents	70,542	61,761
Fair Value Measurements Recurring \| Cash and money market funds \| Level 1
Financial assets carried at fair value:
Total cash and cash equivalents	70,542	61,761
Fair Value Measurements Recurring \| Cash and money market funds \| Level 2
Financial assets carried at fair value:
Total cash and cash equivalents	0	0
Fair Value Measurements Recurring \| Cash and money market funds \| Level 3
Financial assets carried at fair value:
Total cash and cash equivalents	$ 0	$ 0

Cash equivalents and marketable securities fair value disclosure.

No definition available.

Name:	aveo_CashEquivalentsAndMarketableSecuritiesFairValueDisclosure
Namespace Prefix:	aveo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

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

- References

No definition available.

+ Details

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

- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=124260329&loc=d3e26626-111562

+ Details

Name:	us-gaap_AvailableForSaleSecuritiesDebtSecuritiesCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

+ References

No definition available.

+ Details

Name:	us-gaap_CashAndCashEquivalentsFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4D
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=121570589&loc=SL51823488-111719

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (a),(c)
-URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5624163-113959

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226000-175313

Reference 5: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 55
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226052-175313

+ Details

Name:	us-gaap_DerivativeFairValueOfDerivativeLiability
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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

- Details

Name:	us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CashAndCashEquivalentsAxis=aveo_CashAndMoneyMarketFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: