Discount rate on the issuance of common stock.

No definition available.

Name:	artv_DiscountRateOnTheIssuanceOfCommonStock
Namespace Prefix:	artv_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Stock issued during period shares new issues upon the conversion of safe notes.

+ References

No definition available.

+ Details

Name:	artv_StockIssuedDuringPeriodSharesNewIssuesUponTheConversionOfSafeNotes
Namespace Prefix:	artv_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The cap rate on a price risk derivative such as a cap or collar. A payment or receipt is triggered if the market rate exceeds the cap rate on the contract.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeCapPrice
Namespace Prefix:	us-gaap_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
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

No definition available.

+ Details

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

- Definition

The cash inflow provided by derivative instruments during the period, which are classified as financing activities, excluding those designated as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 23
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-23

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 14
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-14

+ Details

Name:	us-gaap_ProceedsFromDerivativeInstrumentFinancingActivities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_StatementEquityComponentsAxis=us-gaap_CommonStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByLiabilityClassAxis=artv_SimpleAgreementForFutureEquityNonCurrentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	artv_ProbableEventAxis=artv_EquityFinancingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	artv_ProbableEventAxis=artv_LiquidityEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	artv_ProbableEventAxis=artv_ExcludingLiquidityEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Simple Agreement for Future Equity - Additional Information (Detail) $ in Millions		12 Months Ended
	Jul. 22, 2024 shares	Dec. 31, 2024 USD ($) $ / shares shares	May 29, 2024 $ / shares	May 28, 2024 $ / shares
Common stock [Member]
Option Indexed to Issuer's Equity [Line Items]
Issuance of common shares upon the conversion of SAFE notes \| shares	2,391,418	2,391,418
Simple agreement for future equity [Member]
Option Indexed to Issuer's Equity [Line Items]
Proceeds from Related Party Debt \| $		$ 24.4
Simple agreement for future equity [Member] \| Equity financing [Member]
Option Indexed to Issuer's Equity [Line Items]
Derivative cap price		48.25		48.25
Discount rate on issuance of common stock		85.00%		85.00%
Simple agreement for future equity [Member] \| Liquidity event [Member]
Option Indexed to Issuer's Equity [Line Items]
Derivative cap price		48.25		48.25
Discount rate on issuance of common stock		85.00%		85.00%
Simple agreement for future equity [Member] \| Excluding liquidity event [Member]
Option Indexed to Issuer's Equity [Line Items]
Derivative cap price			48.25
Discount rate on issuance of common stock		85.00%	85.00%