XML 45 R33.htm IDEA: XBRL DOCUMENT v3.25.3

Stockholders' Equity - Warrants to Purchase Common Stock (Details) - USD ($) $ / shares in Units, shares in Thousands	3 Months Ended	9 Months Ended	21 Months Ended
	Sep. 30, 2025	Sep. 30, 2025	Sep. 30, 2025	Jul. 17, 2025
Class of Warrant or Right [Line Items]
Warrants outstanding, ending balance	111	111	111
Weighted-average exercise price of warrants outstanding, end of period	$ 8	$ 8	$ 8
Warrants to Purchase Common Shares
Class of Warrant or Right [Line Items]
Weighted Average Remaining Life (years)		1 year 11 months 4 days
Warrants outstanding, beginning balance	150	150
Warrants issued			$ 0
Warrants exercised	(39)	(39)	(39)	(39)
Warrants outstanding, ending balance	111	111	111
Weighted-average exercise price of warrants outstanding, beginning of period	$ 7.79	$ 7.79
Weighted-average exercise price of warrants exercised	6.9
Weighted-average exercise price of warrants outstanding, end of period	$ 8	$ 8	$ 8

X

- Definition

The per share price of warrants exercised during period.

+ References

No definition available.

+ Details

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Namespace Prefix:	fenc_
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Balance Type:	na
Period Type:	duration

X

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-3

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X

- 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

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481112/505-10-50-3

+ Details

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Period Type:	instant

X

- Definition

Number of warrants or rights outstanding.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-SubTopic 10
-Subparagraph (e)(1)
-Name Accounting Standards Codification
-Paragraph 2
-Section 50
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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X

- Definition

Value of preferred stock and warrants for common stock issued.

+ References

No definition available.

+ Details

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