XML 69 R55.htm IDEA: XBRL DOCUMENT v3.24.3

SCHEDULE OF WARRANTS OUTSTANDING (Details) shares in Thousands	9 Months Ended
	Sep. 30, 2024 $ / shares shares
Class of Warrant or Right [Line Items]
Warrants Outstanding	20,386
Q1-22 Warrants [Member]
Class of Warrant or Right [Line Items]
Warrants Outstanding	343
Exercise Price | $ / shares	$ 38.20
Expiration Date	Sep. 09, 2027
December 2022 Warrants [Member]
Class of Warrant or Right [Line Items]
Warrants Outstanding	4,370
Exercise Price | $ / shares	$ 1.43
Expiration Date	Jun. 02, 2028
July 2023 Note Warrants [Member]
Class of Warrant or Right [Line Items]
Warrants Outstanding	6,094
Exercise Price | $ / shares	$ 1.43
Expiration Date	Jul. 14, 2028
December 2023 Note Warrant Issued December 15, 2023 [Member]
Class of Warrant or Right [Line Items]
Warrants Outstanding	8,115
Exercise Price | $ / shares	$ 1.43
Expiration Date	Dec. 15, 2028
December 2023 Note Warrant Issued January 11, 2024 [Member]
Class of Warrant or Right [Line Items]
Warrants Outstanding	1,464
Exercise Price | $ / shares	$ 1.43
Expiration Date	Jan. 11, 2029

X

- Definition

Class of warrant or right expiration date.

+ References

No definition available.

+ Details

Name:	ERNA_ClassOfWarrantOrRightExpirationDate
Namespace Prefix:	ERNA_
Data Type:	xbrli:dateItemType
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 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

Name:	us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

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

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

X

- Definition

Number of warrants or rights outstanding.

+ References

No definition available.

+ Details

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

X

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=ERNA_CommonWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=ERNA_December2022WarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=ERNA_July2023WarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=ERNA_December2023NoteWarrantIssuedDecember152023Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=ERNA_December2023NoteWarrantIssuedJanuary112024Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: