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NATURE OF OPERATIONS AND SIGNIFICANT ACCOUNTING POLICIES (Details Narrative) - USD ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Deferred Compensation Arrangement with Individual, Excluding Share-Based Payments and Postretirement Benefits [Line Items] |  |  |  |
Common stock, par value |  | $ 0.01 |  | $ 0.01
Reverse stock split ratio |  | exchange ratio of 25-to-1 (the “Reverse Stock Split”) |  |
Common stock, shares authorized |  | 200,000,000 |  | 200,000,000
Cash, cash equivalents, restricted cash and short-term investments |  | $ 26,000,000.0 |  |
Cash flow from operating activities |  | (22,700,000) | $ (25,074,000) |
Depreciation and amortization costs |  | 1,584,000 | 1,641,000 |
Restricted cash |  | 5,891,000 |  | $ 5,891,000
General and Administrative to Research and Development Expenses [Member] |  |  |  |
Deferred Compensation Arrangement with Individual, Excluding Share-Based Payments and Postretirement Benefits [Line Items] |  |  |  |
Reclassification of Rent expense | $ 300,000 |  | 600,000 |
Prepaid Expenses, Other Current Assets to Restricted Cash [Member] |  |  |  |
Deferred Compensation Arrangement with Individual, Excluding Share-Based Payments and Postretirement Benefits [Line Items] |  |  |  |
Restricted cash |  |  |  | 5,000,000.0
Other Assets and Restricted Cash to Restricted Cash [Member] |  |  |  |
Deferred Compensation Arrangement with Individual, Excluding Share-Based Payments and Postretirement Benefits [Line Items] |  |  |  |
Restricted cash |  |  |  | $ 900,000
Research and Development Expense [Member] |  |  |  |
Deferred Compensation Arrangement with Individual, Excluding Share-Based Payments and Postretirement Benefits [Line Items] |  |  |  |
Depreciation and amortization costs | 800,000 |  | $ 1,600,000 |
General and Administrative Expense [Member] |  |  |  |
Deferred Compensation Arrangement with Individual, Excluding Share-Based Payments and Postretirement Benefits [Line Items] |  |  |  |
Depreciation and amortization costs | $ 16,000 | 32,000 |  |
Management [Member] |  |  |  |
Deferred Compensation Arrangement with Individual, Excluding Share-Based Payments and Postretirement Benefits [Line Items] |  |  |  |
Cash flow from operating activities |  | $ 22,700,000 |  |

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(9)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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