FAIR VALUE MEASUREMENTS - Assets measured at fair value on a recurring basis (Details) - USD ($)  | 
Sep. 30, 2023  | 
Dec. 31, 2022  | 
|---|---|---|
| Liabilities: | ||
| Warrant liability | $ 277,356 | $ 1,859,374 | 
| Recurring | ||
| Assets: | ||
| Short-term investments | 31,824 | 31,009 | 
| Total assets measured at fair value | 31,824 | 31,009 | 
| Liabilities: | ||
| Warrant liability | 277,356 | 1,859,374 | 
| Total liabilities measured at fair value | 277,356 | 1,859,374 | 
| Recurring | Level 1 | ||
| Assets: | ||
| Short-term investments | 31,824 | 31,009 | 
| Total assets measured at fair value | 31,824 | 31,009 | 
| Recurring | Level 3 | ||
| Liabilities: | ||
| Warrant liability | 277,356 | 1,859,374 | 
| Total liabilities measured at fair value | $ 277,356 | $ 1,859,374 | 
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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- References No definition available. 
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- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Fair value of financial and nonfinancial obligations. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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- References No definition available. 
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- Definition The fair value of shares that would be issued, determined under the conditions specified in the contract if the settlement were to occur at the reporting date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
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