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STOCKHOLDERS' EQUITY - Additional Information (Details) - USD ($) |  |  | 6 Months Ended
--- | --- | --- | ---
Mar. 16, 2021 | Mar. 11, 2021 | Jun. 30, 2021 | Jun. 30, 2020
Common Stock Capital Shares Reserved For Future Issuance [Line Items] |  |  |  |
Number of shares issued | 32,282,857 |  |  |
Proceeds from issuance of common stock, net | $ 52,600,000 |  | $ 52,552,758 | $ 0
Aggregate proceeds from shares issued under the purchase agreement |  |  | $ 52,552,758 |
Underwritten Public Offering |  |  |  |
Common Stock Capital Shares Reserved For Future Issuance [Line Items] |  |  |  |
Number of shares authorized to issue and sell |  | 28,572,000 |  |
Share price |  | $ 1.75 |  |
Option period |  | 30 days |  |
Number of additional shares authorized to issue and sell |  | 4,285,800 |  |
Number of additional shares issued |  | 3,710,857 |  |
Number of shares issued |  | 32,282,857 |  |
Proceeds from issuance of common stock, net |  | $ 52,600,000 |  |
Exercise of Stock Warrants |  |  |  |
Common Stock Capital Shares Reserved For Future Issuance [Line Items] |  |  |  |
Issuance of shares of common stock |  |  | 1,456 |
Proceeds from Issuance of Warrants |  |  | $ 3,100 |
Board Compensation |  |  |  |
Common Stock Capital Shares Reserved For Future Issuance [Line Items] |  |  |  |
Issuance of shares of common stock |  |  | 63,290 |
Fair value of common stock |  |  | $ 200,000 |

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