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STOCKHOLDERS’ EQUITY (Details Narrative) - USD ($) |  |  |  |  |  |  |  |  | 1 Months Ended | 12 Months Ended |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
May 06, 2021 | Mar. 03, 2021 | Jan. 21, 2021 | Dec. 04, 2020 | Dec. 02, 2020 | Nov. 02, 2020 | Sep. 22, 2020 | Aug. 24, 2020 | Aug. 31, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2021 | Aug. 17, 2021 | Aug. 16, 2021 | May 05, 2021 | Mar. 02, 2021 | Jan. 31, 2021 | Jan. 22, 2021 | Dec. 17, 2020 | Dec. 03, 2020
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, shares authorized | 24,109,635 | 24,109,635 |  |  |  |  |  |  |  | 40,000,000 | 24,109,634 |  | 40,000,000 | 24,109,635 | 20,000,000 | 20,000,000 |  |  |  | 20,000,000
Common stock, shares outstanding |  |  |  |  |  |  |  |  |  | 27,997,793 | 21,246,523 |  |  |  |  |  |  |  |  | 19,850,014
Common stock available for future issuance |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 149,986
Number of warrants to purchase |  |  |  |  |  |  |  |  |  |  |  | 2,193,492 |  |  |  |  |  |  |  |
Issuance of common stock | 4,109,635 | 4,109,635 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of common stock |  |  |  |  |  |  |  |  |  |  | $ 9,479,000 |  |  |  |  |  |  |  |  |
Number of options, exercised |  |  |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |
Stock-based compensation expense |  |  |  |  |  |  |  |  |  | $ 450,000 | 376,000 |  |  |  |  |  |  |  |  |
Stock option expired |  |  |  |  |  |  |  |  |  | 13,845 |  |  |  |  |  |  |  |  |  |
Non-vested stock options granted, unrecognized estimated compensation cost |  |  |  |  |  |  |  |  |  | $ 413,000 |  |  |  |  |  |  |  |  |  |
Estimated compensation, term |  |  |  |  |  |  |  |  |  | 2 years 2 months 8 days |  |  |  |  |  |  |  |  |  |
Gross proceeds from warrants exercised |  |  |  |  |  |  |  |  |  | $ 4,968,000 | $ 1,000 |  |  |  |  |  |  |  |  |
Warrants, modification expense |  |  |  |  |  |  |  |  |  | $ 18,000 |  |  |  |  |  |  |  |  |  |
Warrant [Member] | Two Investor [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of warrants to purchase |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,657,144 |  |  |
Exercise price of warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.001 |  |  |
Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price of warrants |  |  |  |  |  |  |  |  |  |  |  | $ 0.88 |  |  |  |  |  |  |  |
Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price of warrants |  |  |  |  |  |  |  |  |  |  |  | $ 2.50 |  |  |  |  |  |  |  |
Private Placement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of warrants to purchase |  |  |  |  |  |  |  |  |  |  | 3,774,468 |  |  |  |  |  |  |  |  |
Employee Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value options vesting term |  |  |  |  |  |  |  |  |  | 3 years |  |  |  |  |  |  |  |  |  |
Number of options, vested |  |  |  |  |  |  |  |  |  | $ 583,000 | $ 561,000 |  |  |  |  |  |  |  |  |
Stock-based compensation expense |  |  |  |  |  |  |  |  |  | 258,000 | $ 376,000 |  |  |  |  |  |  |  |  |
Securities Purchase Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross proceeds from private placement |  |  |  |  | $ 6,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net proceeds from private placement |  |  |  |  | $ 5,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Securities Purchase Agreement [Member] | Private Placement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock, number of shares issued |  |  |  |  | 5,914,285 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock, price per share |  |  |  |  | $ 0.70 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
August Underwriting Agreement [Member] | H.C. Wainwright &amp; Co., LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of warrants to purchase |  |  |  |  |  |  |  | 339,858 |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock, number of shares issued |  |  |  |  |  |  |  | 4,531,434 |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock, price per share |  |  |  |  |  |  |  | $ 0.75 |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of common stock |  |  |  |  |  |  |  | $ 2,700,000 |  |  |  |  |  |  |  |  |  |  |  |
Warrants expiration date |  |  |  |  |  |  |  | Aug. 24, 2025 |  |  |  |  |  |  |  |  |  |  |  |
Exercise price of warrants |  |  |  |  |  |  |  | $ 0.9375 |  |  |  |  |  |  |  |  |  |  |  |
September Underwriting Agreement [Member] | H.C. Wainwright &amp; Co., LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of warrants to purchase |  |  |  |  |  |  | 134,609 |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock, number of shares issued |  |  |  |  |  |  | 1,794,783 |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock, price per share |  |  |  |  |  |  | $ 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale of common stock |  |  |  |  |  |  | $ 1,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants expiration date |  |  |  |  |  |  | Sep. 22, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price of warrants |  |  |  |  |  |  | $ 1.25 |  |  |  |  |  |  |  |  |  |  |  |  |
Cancellation Agreements [Member] | Option Holders [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options, granted |  |  |  |  |  | 804,788 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount paid to each option holder |  |  |  |  |  | $ 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cancellation Agreements [Member] | Option Holders [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise prices |  |  |  |  |  | $ 2.57 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cancellation Agreements [Member] | Option Holders [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise prices |  |  |  |  |  | $ 6.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant Amendment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrants, modification expense |  |  |  |  |  |  |  |  |  | $ 1,627,000 |  |  |  |  |  |  |  |  |  |
Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares issued upon conversion |  |  |  | 396,509 |  |  |  |  |  | 153,000 | 151,000 |  |  |  |  |  |  |  |  |
Excess stock, shares issued |  |  |  | 246,523 |  |  |  |  |  |  | 4,109,634 |  |  |  |  |  |  |  |  |
Issuance of common stock |  |  |  |  |  |  |  |  |  |  | 11,993,979 |  |  |  |  |  |  |  |  |
Common Stock [Member] | Private Placement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of warrants to purchase |  |  |  |  |  |  |  |  |  |  | 100,000 |  |  |  |  |  |  |  |  |
Pre-funded Warrants [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of warrants to purchase |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000 |
Exercise price of warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.001 |
Pre-funded Warrants [Member] | Securities Purchase Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock, number of shares issued |  |  |  |  | 2,657,144 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale of stock, price per share |  |  |  |  | $ 0.699 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price of warrants |  |  |  |  | $ 0.001 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant description |  |  |  |  | A holder of a Pre-funded Warrant may not exercise any portion of such holder’s Pre-funded Warrants to the extent that the holder, together with its affiliates, would beneficially own more than 4.99% (or, at the election of the holder, 9.99%) of the Company’s outstanding shares of common stock immediately after exercise, except that upon at least 61 days’ prior notice from the holder to the Company, the holder may increase the beneficial ownership limitation to up to 9.99% of the number of shares of common stock outstanding immediately after giving effect to the exercise. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Employee Options [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options, exercised |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options, granted |  |  |  |  |  |  |  |  |  | 877,500 | 997,000 |  |  |  |  |  |  |  |  |
Exercise prices |  |  |  |  |  |  |  |  |  | $ 1.02 |  |  |  |  |  |  |  |  |  |
Existing Warrants [Member] | Letter Agreements [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of warrants to purchase |  |  | 1,205,968 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price of warrants |  |  | $ 1.165 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
New Unregistered Warrants [Member] | Letter Agreements [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of warrants to purchase |  |  | 1,205,967 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise price of warrants |  |  | $ 1.04 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross proceeds from warrants exercised |  |  | $ 1,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross proceeds from warrants exercised |  |  |  |  |  |  |  |  | $ 3,600,000 |  |  |  |  |  |  |  |  |  |  |
Series C Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares converted |  |  |  | 396,509 |  |  |  |  |  | 666,667 | 2,326,475 |  |  |  |  |  |  |  |  |
Preferred stock, conversion description |  |  |  |  |  |  |  |  |  | Each share of Series C Preferred Stock is convertible into one share of common stock at any time at the option of the holders, provided that each holder would be prohibited from converting Series C Preferred Stock into shares of common stock if, as a result of such conversion, any such holder, together with its affiliates, would own more than 9.99% of the total number of shares of common stock then issued and outstanding. This limitation may be waived with respect to a holder upon such holder’s provision of not less than 61 days’ prior written notice to the Company. |  |  |  |  |  |  |  |  |  |
Series C Preferred Stock [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares issued upon conversion |  |  |  |  |  |  |  |  |  | 666,667 | 2,236,475 |  |  |  |  |  |  |  |  |
December 2020 Warrants [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of warrants to purchase |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,657,144 |  |
December 2020 Warrants [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Excess stock, shares issued |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,657,144 |  |
Series E Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares converted |  |  |  |  |  |  |  |  |  | 875,000 | 950,000 |  |  |  |  |  |  |  |  |
Preferred stock, conversion description |  |  |  |  |  |  |  |  |  | Each share of Series E Preferred Stock is convertible at any time and from time to time at the option of a holder of Series E Preferred Stock into one share of the Company’s common stock, provided that each holder would be prohibited from converting Series E Preferred Stock into shares of the Company’s common stock if, as a result of such conversion, any such holder, together with its affiliates, would own more than 9.99% of the total number of shares of the Company’s common stock then issued and outstanding. This limitation may be waived with respect to a holder upon such holder’s provision of not less than 61 days’ prior written notice to the Company. |  |  |  |  |  |  |  |  |  |
Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares issued upon conversion |  |  |  |  |  |  |  |  |  | 875,000 | 950,000 |  |  |  |  |  |  |  |  |
Series D Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares converted |  |  |  |  |  |  |  |  |  | 153 | 151 |  |  |  |  |  |  |  |  |
Preferred stock, conversion description |  |  |  |  |  |  |  |  |  | Each share of Series D Preferred Stock is convertible into 1,000 shares of common stock at any time at the option of the holders, provided that each holder would be prohibited from converting Series D Preferred Stock into shares of common stock if, as a result of such conversion, any such holder, together with its affiliates, would own more than 4.99% of the total number of shares of common stock then issued and outstanding. This limitation may be waived with respect to a holder upon such holder’s provision of not less than 61 days’ prior written notice to the Company. |  |  |  |  |  |  |  |  |  |

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