Summary of Significant Accounting Policies, Accounts Receivable (Details) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Accounts Receivable [Abstract]
Reserves for uncollectible accounts	$ 10,000	$ 2,000

The amount of reserves for uncollectible accounts.

No definition available.

Name:	femy_ReservesForUncollectibleAccounts
Namespace Prefix:	femy_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant