Debt instrument payment principal and accrued interest outstanding.

No definition available.

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Balance Type:	debit
Period Type:	duration

- Definition

Drew down the promissory note.

+ References

No definition available.

+ Details

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Namespace Prefix:	fuse_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

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Balance Type:	na
Period Type:	instant

- Definition

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

+ References

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+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

+ References

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+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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- Definition

The fair value of notes issued in noncash investing and financing activities.

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- Definition

The cash outflow to acquire investments (not to include restricted cash) that are pledged or subject to withdrawal restrictions.

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- 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

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- Details

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- Details

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- Details

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Subsequent Events - Additional Information (Detail) - USD ($)											1 Months Ended		3 Months Ended	12 Months Ended
	May 14, 2025	Apr. 14, 2025	Mar. 14, 2025	Feb. 18, 2025	Jan. 25, 2025	Jan. 17, 2025	Jan. 16, 2025	Aug. 18, 2024	Aug. 18, 2023	Jan. 18, 2022	May 31, 2025	Apr. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	May 23, 2025	Feb. 04, 2025	Jan. 18, 2024
Subsequent Event [Line Items]
Proceeds from issuance initial public offering								$ 30,000	$ 70,000	$ 191,647,500			$ 630,000	$ 910,000
Second Amended Merger Agreement [Member]
Subsequent Event [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity																$ 8,840,000
Maximum [Member]
Subsequent Event [Line Items]
Debt instrument, face amount															$ 4,000,000
Minimum [Member]
Subsequent Event [Line Items]
Debt instrument, face amount															$ 3,000,000
Amended And Restated Working Capital Promissory Note [Member]
Subsequent Event [Line Items]
Debt instrument, face amount													$ 2,860,000				$ 2,000,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Proceeds from issuance initial public offering	$ 30,000	$ 30,000	$ 30,000	$ 30,000			$ 30,000
Subsequent Event [Member] \| Second Amended Merger Agreement [Member]
Subsequent Event [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity																$ 8,840,000
Subsequent Event [Member] \| Amended And Restated Working Capital Promissory Note [Member]
Subsequent Event [Line Items]
Debt instrument, face amount						$ 3,000,000
DebtInstrument Payment Principal And Accrued Interest Outstanding						$ 1,491,000
Debt Instrument, Convertible, Conversion Price						$ 4
Drew Down The Promissory Note											$ 200,000	$ 203,000
Subsequent Event [Member] \| Convertable Promissory Note [Member] \| Second Amended Merger Agreement [Member]
Subsequent Event [Line Items]
Notes Issued					$ 2,160,000
Debt Instrument, Maturity Date					Jul. 12, 2025
Subsequent Event [Member] \| Convertable Promissory Note One [Member] \| Second Amended Merger Agreement [Member]
Subsequent Event [Line Items]
Notes Issued					$ 4.5
Subsequent Event [Member] \| Convertable Promissory Note Two [Member] \| Second Amended Merger Agreement [Member]
Subsequent Event [Line Items]
Notes Issued					$ 2