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Marketable Securities - Additional Information (Details)	3 Months Ended
	Mar. 31, 2023
Minimum
Marketable Securities [Line Items]
Marketable securities, contractual maturity period	1 month
Maximum
Marketable Securities [Line Items]
Marketable securities, contractual maturity period	4 months

X

- Definition

Investments held in marketable securities, contractual maturities period.

+ References

No definition available.

+ Details

Name:	avdx_InvestmentsHeldInMarketableSecuritiesContractualMaturitiesPeriod
Namespace Prefix:	avdx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- 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

No definition available.

+ Details

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

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: