Period of extension beyond the original maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

+ Details

Name:	sfuny_DebtInstrumentAdditionalRenewalTerm
Namespace Prefix:	sfuny_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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-Name Accounting Standards Codification
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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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

- Details

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

- Details

Name:	srt_CounterpartyNameAxis=sfuny_BeijingZhichuangTiandiTechnologyDevelopmentCo.LtdMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=sfuny_BankLoanSecuredByRelatedPartyAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
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SUBSEQUENT EVENTS (Details) - USD ($) $ in Thousands	1 Months Ended
SUBSEQUENT EVENTS (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
SUBSEQUENT EVENTS
Stated interest rate, as a percent			4.55%
Related Party \| Beijing Zhichuang Tiandi Technology Development Co., Ltd \| Bank Loan Secured by Related Party Assets
SUBSEQUENT EVENTS
Principle amount		$ 3,100
Subsequent event \| Related Party \| Beijing Zhichuang Tiandi Technology Development Co., Ltd \| Bank Loan Secured by Related Party Assets
SUBSEQUENT EVENTS
Principle amount	$ 1,412
Additional Renewal Term	1 year
Stated interest rate, as a percent	3.10%