FAIR VALUE MEASUREMENTS - Additional Information (Details) - USD ($) |
3 Months Ended | 6 Months Ended |
|---|---|---|
Mar. 31, 2021 |
Dec. 31, 2020 |
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| FAIR VALUE MEASUREMENTS | ||
| Fair Value Adjustment of Warrants | $ 4,774,000 | $ 1,705,000 |
| X | ||||||||||
- Definition Amount of expense (income) related to adjustment to fair value of warrant liability. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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