Commitments and Contingencies, Undiscounted Cash Payment Obligations (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Operating Leases [Abstract]
2023	$ 557,500
2024	47,029
Total undiscounted lease payments - operating leases	604,529
Financing Leases [Abstract]
2023	16,792
Total undiscounted lease payments - finance leases	16,792
Total undiscounted lease payments	621,321
Less: imputed interest	(218,904)
Lease liability	402,417
Less: current portion of lease liability	(373,833)	$ (406,674)
Lease liability, less current portion	$ 28,584	$ 402,417

Amount of finance lease liability undiscounted obligation to be paid.

No definition available.

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease and finance lease.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease and finance lease.

+ References

No definition available.

+ Details

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

- Definition

Present value of lessee's discounted obligation for lease payments from operating and financing lease.

+ References

No definition available.

+ Details

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

- Definition

Present value of lessee's discounted obligation for lease payments from operating and finance lease, classified as current.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Present value of lessee's discounted obligation for lease payments from operating and finance lease, classified as noncurrent.

+ References

No definition available.

+ Details

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

- Definition

Amount of Operating lease undiscounted obligation to be paid.

+ References

No definition available.

+ Details

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

- References

No definition available.

+ Details

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

- Definition

Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918701-209980

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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