XML 60 R49.htm IDEA: XBRL DOCUMENT
v3.26.1

WARRANTS - Fair Value Assumptions (Details) | Mar. 31, 2026 $ / shares year
--- | ---
Stock price | Going concern scenario | Series A-1 Redeemable Convertible Preferred Stock |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Warrants, measurement input | 8.73
Stock price | Going concern scenario | Series E-1 Redeemable Convertible Preferred Stock |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Warrants, measurement input | 8.17
Stock price | Going concern scenario | Common stock |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Warrants, measurement input | 0
Stock price | IPO scenario | Series A-1 Redeemable Convertible Preferred Stock |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Warrants, measurement input | 0
Stock price | IPO scenario | Series E-1 Redeemable Convertible Preferred Stock |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Warrants, measurement input | 0
Stock price | IPO scenario | Common stock |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Warrants, measurement input | 14.00
Expected volatility | Going concern scenario |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Warrants, measurement input | 0.750
Expected volatility | IPO scenario |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Warrants, measurement input | 0.750
Expected term (in years) | Going concern scenario |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Warrants, measurement input | year | 3.00
Expected term (in years) | IPO scenario |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Warrants, measurement input | year | 0.12
Risk-free interest rate | Going concern scenario |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Warrants, measurement input | 0.038
Risk-free interest rate | IPO scenario |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Warrants, measurement input | 0.037
Expected dividend yield | Going concern scenario |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Warrants, measurement input | 0.000
Expected dividend yield | IPO scenario |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Warrants, measurement input | 0.000

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 Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 805 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479328/805-10-50-8 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481229/860-50-50-2 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 805 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 43 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479303/805-10-55-43 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -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 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 103 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-103 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -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 7: http://www.xbrl.org/2003/role/disclosureRef -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 + Details
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur. + 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_WarrantsAndRightsOutstandingMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputSharePriceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationTechniqueAxis=frvo_GoingConcernScenarioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=frvo_SeriesA1RedeemableConvertiblePreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=frvo_SeriesE1RedeemableConvertiblePreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ValuationTechniqueAxis=frvo_IPOScenarioMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputPriceVolatilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputExpectedTermMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputRiskFreeInterestRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputExpectedDividendRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |