XML 38 R26.htm IDEA: XBRL DOCUMENT
v3.25.2

LEASES (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2025
Leases |
NET OPERATING LEASE EXPENSE | For the three and six months ended June 30, 2025 and 2024, the net operating lease expenses were as follows (in thousands): NET OPERATING LEASE EXPENSE
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
|  | Three months ended June 30, |  |  | Six months ended June 30, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Operating lease expense |  | $ | 68 |  |  | $ | 1,633 |  |  | $ | 135 |  |  | $ | 3,269 |
Sublease income |  |  | (21 | ) |  |  | (21 | ) |  |  | (42 | ) |  |  | (42 | )
Variable lease expense |  |  | 7 |  |  |  | 332 |  |  |  | 13 |  |  |  | 663 |
Total lease expense |  | $ | 54 |  |  | $ | 1,944 |  |  | $ | 106 |  |  | $ | 3,890 |
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 June 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 |  |  | (89 | )
Operating lease ROU assets at June 30, 2025 |  | $ | 581 |
|  | Operating Lease Liabilities |
Operating lease liabilities at January 1, 2025 |  | $ | 684 |
Principal payments on operating lease liabilities |  |  | (91 | )
Operating lease liabilities at June 30, 2025 |  |  | 593 |
Less non-current portion |  |  | (376 | )
Current portion at June 30, 2025 |  | $ | 217 |
MATURITIES OF OPERATING LEASE LIABILITIES | MATURITIES OF OPERATING LEASE LIABILITIES
|  | As of June 30, 2025 |
2025 |  | $ | 137 |
2026 |  |  | 277 |
2027 |  |  | 173 |
2028 |  |  | 82 |
Total payments |  |  | 669 |
Less imputed interest |  |  | (76 | )
Total operating lease liabilities |  | $ | 593 |

X
- References No definition available. + Details
Name: | ERNA_DisclosureLeasesAbstract
Namespace Prefix: | ERNA_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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
- 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