FAIR VALUE MEASUREMENTS - FV hierarchy (Details) - Fair Value, Recurring $ in Thousands	Sep. 30, 2022 USD ($)
Financial assets or liabilities measured at fair value on a recurring basis
Cash and cash equivalents	$ 40,388
Marketable securities	6,990
Total financial assets measured at fair value on a recurring basis	47,378
Warrant liabilities - Common Warrants	24,739
Total financial liabilities measured at fair value on a recurring basis	24,739
Level 1
Financial assets or liabilities measured at fair value on a recurring basis
Cash and cash equivalents	40,388
Total financial assets measured at fair value on a recurring basis	40,388
Level 2
Financial assets or liabilities measured at fair value on a recurring basis
Marketable securities	6,990
Total financial assets measured at fair value on a recurring basis	6,990
Level 3
Financial assets or liabilities measured at fair value on a recurring basis
Warrant liabilities - Common Warrants	24,739
Total financial liabilities measured at fair value on a recurring basis	24,739
Cash
Financial assets or liabilities measured at fair value on a recurring basis
Cash and cash equivalents	7,880
Cash | Level 1
Financial assets or liabilities measured at fair value on a recurring basis
Cash and cash equivalents	7,880
Money market funds
Financial assets or liabilities measured at fair value on a recurring basis
Cash and cash equivalents	32,508
Money market funds | Level 1
Financial assets or liabilities measured at fair value on a recurring basis
Cash and cash equivalents	32,508
U.S. government agency debt securities
Financial assets or liabilities measured at fair value on a recurring basis
Marketable securities	6,990
U.S. government agency debt securities | Level 2
Financial assets or liabilities measured at fair value on a recurring basis
Marketable securities	$ 6,990