XML 69 R61.htm IDEA: XBRL DOCUMENT
v3.25.3

Fair Value Measurements - Schedule of Financial Assets and Liabilities that are Measured at Fair Value on a Recurring Basis (Details) - Fair Value, Recurring [Member] - USD ($) | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Assets: |  |
Total assets | $ 179,688,082 | $ 102,138,351
Liabilities: |  |
Total liabilities | 70,045,770 | 179,650,184
March 2025 Investor Note [Member] |  |
Liabilities: |  |
Total liabilities | 60,750,183 |
SAFEs [Member] |  |
Liabilities: |  |
Total liabilities |  | 171,080,533
Customer Rewards Liability [Member] |  |
Liabilities: |  |
Total liabilities | 9,295,587 | 8,569,651
Digital Assets [Member] |  |
Assets: |  |
Total assets | 179,688,082 | 102,138,351
Level 1 [Member] |  |
Assets: |  |
Total assets | 179,688,082 | 102,138,351
Liabilities: |  |
Total liabilities | 0 | 0
Level 1 [Member] | March 2025 Investor Note [Member] |  |
Liabilities: |  |
Total liabilities | 0 |
Level 1 [Member] | SAFEs [Member] |  |
Liabilities: |  |
Total liabilities |  | 0
Level 1 [Member] | Customer Rewards Liability [Member] |  |
Liabilities: |  |
Total liabilities | 0 | 0
Level 1 [Member] | Digital Assets [Member] |  |
Assets: |  |
Total assets | 179,688,082 | 102,138,351
Level 2 [Member] |  |
Assets: |  |
Total assets | 0 | 0
Liabilities: |  |
Total liabilities | 0 | 0
Level 2 [Member] | March 2025 Investor Note [Member] |  |
Liabilities: |  |
Total liabilities | 0 |
Level 2 [Member] | SAFEs [Member] |  |
Liabilities: |  |
Total liabilities |  | 0
Level 2 [Member] | Customer Rewards Liability [Member] |  |
Liabilities: |  |
Total liabilities | 0 | 0
Level 2 [Member] | Digital Assets [Member] |  |
Assets: |  |
Total assets | 0 | 0
Level 3 [Member] |  |
Assets: |  |
Total assets | 0 | 0
Liabilities: |  |
Total liabilities | 70,045,770 | 179,650,184
Level 3 [Member] | March 2025 Investor Note [Member] |  |
Liabilities: |  |
Total liabilities | 60,750,183 |
Level 3 [Member] | SAFEs [Member] |  |
Liabilities: |  |
Total liabilities |  | 171,080,533
Level 3 [Member] | Customer Rewards Liability [Member] |  |
Liabilities: |  |
Total liabilities | 9,295,587 | 8,569,651
Level 3 [Member] | Digital Assets [Member] |  |
Assets: |  |
Total assets | $ 0 | $ 0

X
- Definition Fair value portion of asset recognized for present right to economic benefit. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 100 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-100 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_AssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_AssetsFairValueDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of financial and nonfinancial obligations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_LiabilitiesFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_LiabilitiesFairValueDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fld_MarchTwoThousandAndTwentyFiveInvestorNoteMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=fld_SimpleAgreementsForFutureEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=fld_CustomerRewardsLiabilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=fld_DigitalAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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