Represents the number of common stock shares subject aggregate of sponsor surrendered.

No definition available.

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Namespace Prefix:	frge_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares of the company that were no longer subject to forfeiture.

+ References

No definition available.

+ Details

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Namespace Prefix:	frge_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of shares owned by the founders subject to forfeiture if the underwriter overallotment option is not exercised in the proposed public offering.

+ References

No definition available.

+ Details

Name:	frge_NumberOfSharesSubjectToForfeiture
Namespace Prefix:	frge_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the percentage of founder shares equal.

+ References

No definition available.

+ Details

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Namespace Prefix:	frge_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The period of time after completion of a business combination during which the shares or warrant may not be transferred.

+ References

No definition available.

+ Details

Name:	frge_RestrictionsOnTransferPeriodOfTimeAfterBusinessCombinationCompletion
Namespace Prefix:	frge_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Sale of stock consideration received on transaction shares.

+ References

No definition available.

+ Details

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Namespace Prefix:	frge_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Sponsor transferred founder shares to each of the independent directors.

+ References

No definition available.

+ Details

Name:	frge_SponsorTransferredFounderSharesToIndependentDirectors
Namespace Prefix:	frge_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The period of time after a business combination which must elapse before consideration of the share price condition for transfer of shares.

+ References

No definition available.

+ Details

Name:	frge_ThresholdPeriodAfterBusinessCombinationInWhichSpecifiedTradingDaysWithinAnySpecifiedTradingDayPeriodCommences
Namespace Prefix:	frge_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The share price threshold that must be achieved in order to waive the restriction on transfer of shares during a restricted period after a business combination.

+ References

No definition available.

+ Details

Name:	frge_TransferAssignOrSellAnySharesOrWarrantsAfterCompletionOfInitialBusinessCombinationStockPriceTrigger
Namespace Prefix:	frge_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

When determining the condition for transfer of shares without restriction after a business combination, the number of consecutive trading days used to observe the share price.

+ References

No definition available.

+ Details

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Namespace Prefix:	frge_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

When determining the condition for transfer of shares without restriction after a business combination, the number of days in which the share price must exceed the specified amount.

+ References

No definition available.

+ Details

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Namespace Prefix:	frge_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares of common stock issued as dividends during the period. Excludes stock splits.

+ References

+ Details

Name:	us-gaap_CommonStockDividendsShares
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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

- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21463-112644

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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

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

- Definition

Cash received on stock transaction after deduction of issuance costs.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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

- Details

Name:	dei_LegalEntityAxis=frge_MotiveCapitalCorpMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=frge_SponsorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=frge_FounderSharesMember
Namespace Prefix:
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Related Party Transactions - Founder Shares (Details)					12 Months Ended
Related Party Transactions - Founder Shares (Details)	Dec. 10, 2020 shares	Dec. 08, 2020 shares	Nov. 24, 2020 shares	Oct. 02, 2020 USD ($) shares	Dec. 31, 2021 D $ / shares shares	Mar. 31, 2022 shares	Dec. 31, 2020 shares	Sep. 30, 2020 shares
Related Party Transaction [Line Items]
Common Stock, Shares, Issued					63,301,388	169,223,826
Common stock, outstanding					63,301,388	169,223,826
Class B Common Stock \| Motive Capital Corp [Member]
Related Party Transaction [Line Items]
Common Stock, Shares, Issued					10,350,000		10,350,000	10,350,000
Common stock, outstanding	1,725,000				10,350,000		10,350,000	10,350,000
Sponsor \| Class B Common Stock \| Motive Capital Corp [Member]
Related Party Transaction [Line Items]
Consideration received \| $				$ 25,000
Consideration received, shares				11,500,000
Number of shares surrender			2,875,000
Sponsor Transferred Founder Shares		30,000	30,000
Share dividend	1,725,000
Common stock, outstanding	10,350,000
Restrictions on transfer period of time after business combination completion					1 year
Sponsor \| Class B Common Stock \| Over-allotment option \| Motive Capital Corp [Member]
Related Party Transaction [Line Items]
Common Stock, Shares, Issued					1,350,000
Common stock, outstanding					1,350,000
Shares subject to forfeiture					1,350,000
Shares no longer subject to forfeiture					0
Percentage of founder shares equal					20.00%
Founder Shares \| Sponsor \| Class B Common Stock \| Motive Capital Corp [Member]
Related Party Transaction [Line Items]
Stock price trigger to transfer, assign or sell any shares or warrants of the company, after the completion of the initial business combination (in dollars per share) \| $ / shares					$ 12.00
Threshold trading days for transfer, assign or sale of shares or warrants, after the completion of the initial business combination \| D					20
Threshold consecutive trading days for transfer, assign or sale of shares or warrants, after the completion of the initial business combination \| D					30
Threshold period after the business combination in which the 20 trading days within any 30 trading day period commences					150 days