Class of warrant or right outstanding percent.

No definition available.

Name:	FRSX_ClassOfWarrantOrRightOutstandingPercent
Namespace Prefix:	FRSX_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of warrants or rights outstanding.

+ References

No definition available.

+ Details

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

- Definition

Cash received on stock transaction after deduction of issuance costs.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(01)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of the reverse stock split arrangement. Also provide the retroactive effect given by the reverse split that occurs after the balance sheet date but before the release of financial statements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 4.C)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-4

+ Details

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Balance Type:	na
Period Type:	duration

- 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481674/830-30-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483399/855-10-50-2

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Period Type:	duration

- Details

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- Details

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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

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SUBSEQUENT EVENTS (Details Narrative) $ / shares in Units, $ in Thousands							1 Months Ended
	Feb. 26, 2026	Feb. 25, 2026	Jan. 01, 2026 USD ($) $ / shares shares	Aug. 24, 2025	Aug. 15, 2025	Feb. 26, 2025	Aug. 31, 2025	Dec. 11, 2023 $ / shares
Subsequent Event [Line Items]
Reverse stock split				reverse share split of its Ordinary Shares at a ratio of 1-for-7.	1:7 reverse share split	ADSs from 1 ADS representing 30 Ordinary Shares to 1 ADS representing 90 Ordinary Shares.	1:7 reverse share split
Subsequent Event [Member]
Subsequent Event [Line Items]
Reverse stock split	1 ADS representing 90 Ordinary Shares	1 ADS representing 30 Ordinary Shares
Subsequent Event [Member] \| 2024 Share Incentive Plan [Member]
Subsequent Event [Line Items]
Number of shares issued			162,444
Securities Purchase Agreements [Member] \| Subsequent Event [Member] \| Series A Warrants [Member]
Subsequent Event [Line Items]
Series A warrants			604,237
Series A warrants percentage			1
American Depository Shares [Member]
Subsequent Event [Line Items]
Share price \| $ / shares								$ 21.00
American Depository Shares [Member] \| June 2024 Sales Agreement [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Number of shares sold			223,850
Share price \| $ / shares			$ 3.99
Net proceeds from sales \| $			$ 866
Restricted Stock Units (RSUs) [Member] \| Subsequent Event [Member] \| 2024 Share Incentive Plan [Member]
Subsequent Event [Line Items]
Number of shares issued			14,620,000