Inception Date

No definition available.

Name:	fsol_InceptionDate
Namespace Prefix:	fsol_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Purchase Of Stock

+ References

No definition available.

+ Details

Name:	fsol_PurchaseOfStock
Namespace Prefix:	fsol_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Date the operations of the entity commenced, in YYYY-MM-DD format.

+ References

No definition available.

+ Details

Name:	us-gaap_OperationsCommencedDate1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- 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_ProductInformationLineItems
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

Name:	us-gaap_SaleOfStockConsiderationReceivedOnTransaction
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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

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

- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

+ Details

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

- Details

Name:	srt_ProductOrServiceAxis=fsol_SeedBasketsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Organization (Additional Information) (Details) - USD ($)			1 Months Ended	3 Months Ended
	Sep. 24, 2025	Sep. 10, 2025	Mar. 31, 2026	Mar. 31, 2026
Product Information [Line Items]
Number of shares issued and sold	1
Inception date			Mar. 20, 2025
Operations Commenced Date				Nov. 17, 2025
Seed Baskets [Member]
Product Information [Line Items]
Aggregate purchase price		$ 25
Purchase of share	200,000
Share price	$ 25