XML 38 R26.htm IDEA: XBRL DOCUMENT v3.25.3

LEASES (Tables)

9 Months Ended

Sep. 30, 2025

Leases [Abstract]

NET OPERATING LEASE EXPENSE

For the three and nine months ended September 30, 2025 and 2024, the net operating lease expenses were as follows (in thousands):

NET OPERATING LEASE EXPENSE 

		Three months ended September 30,								Nine months ended September 30,
		2025				2024				2025				2024
Operating lease expense		$	67			$	1,110			$	202			$	4,380
Sublease income			(21	)			(21	)			(63	)			(63	)
Variable lease expense			7				225				21				887
Total lease expense		$	53			$	1,314			$	160			$	5,204

OPERATING LEASE RIGHT-OF-USE ASSETS AND LIABILITIES

The tables below show the beginning balances of the operating ROU assets and lease liabilities as of January 1, 2025 and the ending balances as of September 30, 2025, including the changes during the period (in thousands).

OPERATING LEASE RIGHT-OF-USE ASSETS AND LIABILITIES 

		Operating Lease ROU Assets
Operating lease ROU assets at January 1, 2025		$	670
Amortization of operating lease ROU assets			(142	)
Remeasurment of ROU asset			13
Operating lease ROU assets at September 30, 2025		$	541

		Operating Lease Liabilities
Operating lease liabilities at January 1, 2025		$	684
Principal payments on operating lease liabilities			(145	)
Remeasurment of lease liability			13
Operating lease liabilities at September 30, 2025			552
Less non-current portion			(346	)
Current portion at September 30, 2025		$	206

MATURITIES OF OPERATING LEASE LIABILITIES

MATURITIES OF OPERATING LEASE LIABILITIES 

		As of September 30, 2025
2025		$	26
2026			304
2027			200
2028			95
Total payments			625
Less imputed interest			(73	)
Total operating lease liabilities		$	552

X

- Definition

Operating Lease Right Of Use Assets And Liabilities [Table Text Block]

+ References

No definition available.

+ Details

Name:	ERNA_OperatingLeaseRightOfUseAssetsAndLiabilitiesTableTextBlock
Namespace Prefix:	ERNA_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-4

+ Details

Name:	us-gaap_LeaseCostTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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

X

- Definition

Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-6

+ Details

Name:	us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration