v3.26.1
Fair Value Measurements - Summary of Changes in Fair Value Associated With Level 3 Convertible Note Financial Instruments Held (Parenthetical) (Details)
Jun. 30, 2026
Bitcoin
Fair Value Disclosures [Abstract]
Delivery of bitcoin
500
X
- Definition
Crypto asset, number of units delivered
+ References
No definition available.
+ Details
Name:
fld_CryptoAssetNumberOfUnitsDelivered
Namespace Prefix:
fld_
Data Type:
xbrli:integerItemType
Balance Type:
na
Period Type:
instant
X
- References
No definition available.
+ Details
Name:
us-gaap_FairValueDisclosuresAbstract
Namespace Prefix:
us-gaap_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration