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NATURE OF OPERATIONS AND SIGNIFICANT ACCOUNTING POLICIES (Details Narrative) - USD ($) |  |  | 1 Months Ended | 3 Months Ended |
--- | --- | --- | --- | --- | ---
May 07, 2024 | Dec. 21, 2021 | Jan. 31, 2024 | Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |
Net loss |  |  |  | $ 31,600,000 | $ 9,100,000 |
Accumulated deficit |  |  |  | 781,102,000 |  | $ 749,524,000
Cash, cash equivalents, restricted cash and short-term investments |  |  |  | 62,700,000 |  |
Gross proceeds from its underwritten offering |  | $ 16,000,000.0 |  | 75,000,000.0 |  |
Other receivables |  |  |  | $ 2,100,000 |  | $ 2,100,000
Unfounded exercise price per share |  |  |  | $ 0.0001 |  |
Warrants exercise price |  | $ 9.75 |  |  |  |
Shares of common stock issuable upon exercise of warrants |  |  |  | 1,788,000 |  |
Subsequent Event [Member] |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |
Gross proceeds from its underwritten offering | $ 70,200,000 |  |  |  |  |
Loan and Security Agreement [Member] |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |
Warrants to purchase shares |  |  | $ 2,400,000 |  |  |
Warrants exercise price |  |  | $ 4.75 |  |  |
2024 Loan Agreement [Member] |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |
Warrants exercise price |  |  |  | $ 4.75 |  |
Shares of common stock issuable upon exercise of warrants |  |  |  | 505,263 |  |
2024 Loan Agreement [Member] | Subsequent Event [Member] |  |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |  |
Warrants exercise price | $ 4.07 |  |  |  |  |

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- Definition Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(9)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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