XML 43 R33.htm IDEA: XBRL DOCUMENT v3.25.3

WARRANTS (Details) - USD ($)		9 Months Ended
	Sep. 18, 2025	Sep. 30, 2025	Apr. 24, 2025
WARRANTS
Payments for purchases from prior sponsor	$ 7,400,000
Business combination days		30 days
Closing days of the initial public offering		12 months
Written notice of redemption term		30 days
Trading days		20 days
Share price		$ 10.05
Percentage of equity proceeds		60.00%
Redemption trigger price		$ 18
Public Warrants
WARRANTS
Warrants outstanding (in Shares)		11,250,000	11,250,000
Warrant terms		5 years
Warrant exercise		$ 9.2
Private Placement Warrants
WARRANTS
Warrants outstanding (in Shares)		7,568,750	7,568,750
Number of warrants purchased by new sponsor from prior sponsor	4,700,000
NMSI Private Placement Warrants
WARRANTS
Warrants outstanding (in Shares)		4,100,000	4,100,000
Number of warrants purchased by new sponsor from prior sponsor	4,100,000
Warrant
WARRANTS
Warrant exercise		$ 1
Minimum
WARRANTS
Trading days		10 days
Percentage of market value		115.00%
Maximum
WARRANTS
Trading days		20 days
Percentage of market value		180.00%
Class A ordinary shares
WARRANTS
Business combination days		60 days
Warrant exercise		$ 18	$ 11.5
Class A ordinary shares | Public Warrants
WARRANTS
Warrant exercise		0.01
Class A ordinary shares | Warrant
WARRANTS
Share price		$ 9.2
Class B Ordinary Shares
WARRANTS
Purchase of shares by new sponsor from prior sponsor	7,500,000
IPO
WARRANTS
Warrants outstanding (in Shares)		18,818,500	18,818,500
Share price		$ 10.05

X

- Definition

Business Combination days.

+ References

No definition available.

+ Details

Name:	tva_BusinessCombinationDays
Namespace Prefix:	tva_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Closing days of initial public offering.

+ References

No definition available.

+ Details

Name:	tva_ClosingDaysOfInitialPublicOffering
Namespace Prefix:	tva_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of aggregate purchase price incurred for purchases from prior sponsor.

+ References

No definition available.

+ Details

Name:	tva_PaymentsForPurchasesFromPriorSponsor
Namespace Prefix:	tva_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Percentage of equity proceeds.

+ References

No definition available.

+ Details

Name:	tva_PercentageOfEquityProceeds
Namespace Prefix:	tva_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of market value.

+ References

No definition available.

+ Details

Name:	tva_PercentageOfMarketValue
Namespace Prefix:	tva_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of shares purchased by new sponsor from prior sponsor.

+ References

No definition available.

+ Details

Name:	tva_PurchaseOfSharesByNewSponsorFromPriorSponsor
Namespace Prefix:	tva_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of warrants purchased by new sponsor from prior sponsor.

+ References

No definition available.

+ Details

Name:	tva_PurchaseOfWarrantsByNewSponsorFromPriorSponsor
Namespace Prefix:	tva_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Amount of redemption trigger price.

+ References

No definition available.

+ Details

Name:	tva_RedemptionTriggerPrice
Namespace Prefix:	tva_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Trading days.

+ References

No definition available.

+ Details

Name:	tva_TradingDays
Namespace Prefix:	tva_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Written notice of redemption term.

+ References

No definition available.

+ Details

Name:	tva_WrittenNoticeOfRedemptionTerm
Namespace Prefix:	tva_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-3

+ Details

Name:	us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

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

X

- Definition

Number of warrants or rights outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

+ Details

Name:	us-gaap_SharePrice
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, 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 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

+ Details

Name:	us-gaap_WarrantsAndRightsOutstandingTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=tva_PublicWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=tva_PrivatePlacementWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=tva_NMSIPrivatePlacementWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=us-gaap_WarrantMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

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:

X

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassBMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=us-gaap_IPOMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: