XML 64 R54.htm IDEA: XBRL DOCUMENT
v3.26.1

Accounts receivable, net - Accrued Defective Return and Discount Accounts Roll Forward (Details) - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2026 | Mar. 31, 2025
Accounts Receivable, Accrued Defective Return and Discount, Current [Roll Forward] |  |
Beginning balance | $ 1,007,319 | $ 1,001,927
Provision | 348,130 | 123,538
Ending balance | $ 1,355,449 | $ 1,125,465

X
- Definition The amount as of the balance sheet date of accrued defective return and discount on accounts receivables, classified as current. + References No definition available. + Details
Name: | fgi_AccountsReceivableAccruedDefectiveReturnAndDiscountCurrent
Namespace Prefix: | fgi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Accounts Receivable, Accrued Defective Return and Discount, Current + References No definition available. + Details
Name: | fgi_AccountsReceivableAccruedDefectiveReturnAndDiscountCurrentRollForward
Namespace Prefix: | fgi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of provision for accrued defective return and discount on accounts receivables, classified as current. + References No definition available. + Details
Name: | fgi_ProvisionForAccruedDefectiveReturnAndDiscountOnAccountsReceivableCurrent
Namespace Prefix: | fgi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration