XML 24 R10.htm IDEA: XBRL DOCUMENT
v3.22.2.2

LIQUIDITY AND CAPITAL RESOURCES | 9 Months Ended
--- | ---
Sep. 30, 2022
LIQUIDITY AND CAPITAL RESOURCES [Abstract] |
LIQUIDITY AND CAPITAL RESOURCES |
2) | LIQUIDITY AND CAPITAL RESOURCES
The Company has incurred significant operating losses and has an accumulated deficit as a result of ongoing efforts to develop product candidates, including conducting clinical trials and providing general and administrative support for operations. As of September 30, 2022, the Company had a cash balance of approximately $13.3 million and an accumulated deficit of approximately $160.8 million. For the three and nine months ended September 30, 2022, the Company incurred a net loss of $7.3 million and $20.1 million, respectively, and for the nine months ended September 30, 2022, the Company used cash in operating activities of $15.5 million. On October 18, 2022, the Company entered into a facility sublease agreement (the “Sublease”) for approximately 45,500 square feet of office and laboratory space in Somerville, Massachusetts. Pursuant to the Sublease, the Company delivered to the sublessor a security deposit in the form of a letter of credit in the amount of $4.1 million, which will be reduced on an incremental basis throughout the term of the lease. The letter of credit was issued by the Company’s commercial bank, which required that the Company cash collateralize the letter of credit by depositing $4.1 million in a restricted cash account with such bank. The amount of required restricted cash collateral will decline in parallel with the reduction in the amount of the letter of credit over the term of the sublease. The Company’s deposit of this restricted cash reduced the amount of working capital the Company has to fund its operations. See Note 15, Subsequent Events, for more information on the Sublease. In connection with preparing the accompanying condensed consolidated financial statements as of and for the three and nine months ended September 30, 2022, the Company’s management concluded that there is substantial doubt regarding the Company’s ability to continue as a going concern because it does not expect to have sufficient cash or working capital resources to fund operations for the twelve-month period subsequent to the issuance date of these financial statements. The Company will need to raise additional capital, which could be through the remaining availability under an equity line purchase agreement with Lincoln Park Capital Fund, LLC (the “Second Purchase Agreement”) (to the extent the Company is permitted to use such agreement) (see Note 12), public or private equity offerings, debt financings, corporate collaborations or other means. The Company may also seek governmental grants to support its clinical trials and preclinical trials. The Company currently has no arrangements for such capital and no assurances can be given that it will be able to raise such capital when needed, on acceptable terms, or at all. The accompanying condensed consolidated financial statements have been prepared on a going-concern basis, which contemplates the realization of assets and the satisfaction of liabilities in the normal course of business. The accompanying condensed consolidated financial statements do not include any adjustments to reflect the possible future effects on the recoverability and classification of assets or the amounts and classifications of liabilities that may result from uncertainty related to the Company’s ability to continue as a going concern.

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

X
- Definition The entire disclosure of liquidity and resource matters when there is a substantial doubt about an entity's ability to continue as a going concern for a reasonable period of time (generally a year from the balance sheet date). going concern. + References No definition available. + Details
Name: | erna_LiquidityAndCapitalResourcesTextBlock
Namespace Prefix: | erna_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration