Value of input used to measure the fair value of the liability.

No definition available.

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- Definition

Amount of change in the fair value of a financial liability resulting from a decrease in a significant valuation input, with other variables unchanged.

+ References

No definition available.

+ Details

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- Definition

Amount of change in the fair value of a financial liability resulting from an increase in a significant valuation input, with other variables unchanged.

+ References

No definition available.

+ Details

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- Definition

Percentage change in the fair value of a financial liability resulting from a change in a significant valuation input, with other variables unchanged.

+ References

No definition available.

+ Details

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- Definition

Probability used in measuring the fair value of the Strategic Innovation Fund funding liability that amounts received will be repaid in cash.

+ References

No definition available.

+ Details

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Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Fair value of the contingent contribution repayment obligation arising under the Strategic Innovation Fund Contribution Agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	gfuz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Probability used in measuring the fair value of the Strategic Innovation Fund funding liability that amounts received will be settled through issuance of SIF Warrants.

+ References

No definition available.

+ Details

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Namespace Prefix:	gfuz_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 505
-SubTopic 20
-Name Accounting Standards Codification
-Section S50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479951/505-20-S50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 505
-SubTopic 20
-Name Accounting Standards Codification
-Section S25
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479982/505-20-S25-2

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-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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Data Type:	xbrli:pureItemType
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Period Type:	duration

- Details

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- Details

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- Details

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- Details

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SIF contribution liability - Narratives (Details) $ in Thousands		6 Months Ended	12 Months Ended
	Aug. 06, 2025	Jun. 30, 2026 USD ($) $ / shares	Dec. 31, 2025 USD ($) $ / shares	Dec. 31, 2024 USD ($) $ / shares
SIF contribution liability
Reverse stock split conversion ratio	0.10	0.1	0.10	0.10
SIF contribution liability
SIF contribution liability
Fair value of the contingent contribution repayment obligation		$ 131	$ 102
Probability of cash repayment		0.01	0.01
Reverse stock split conversion ratio				10
SIF contribution liability \| Share price
SIF contribution liability
Liability, measurement input \| $ / shares		1.65	1.28	9.3
Sensitivity analysis, fair value, financial liability, percentage impact		20.00%	20.00%
Sensitivity analysis, impact on financial liability fair value due to increase in input		$ 17,500	$ 5,700
Sensitivity analysis, impact on financial liability fair value due to decrease in input		$ 17,500	$ 4,700
SIF contribution liability \| Cash repayment Probability
SIF contribution liability
Sensitivity analysis, fair value, financial liability, percentage impact		5.00%	5.00%
Funding liability
SIF contribution liability
Fair value of the contingent contribution repayment obligation			$ 102	$ 93
Probability of cash repayment			0.01
Probability of repayment via warrants		0.01	1	0.01
Funding liability \| Share price
SIF contribution liability
Sensitivity analysis, impact on financial liability fair value due to increase in input		$ 4,200	$ 500