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FAIR VALUE MEASUREMENTS - Summary of Financial Instruments Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Assets:    
Cash and money market accounts $ 53,078 $ 59,680
Restricted cash and money market accounts   2,593
Total assets at fair value 53,078 62,273
LEVEL 1    
Assets:    
Cash and money market accounts 53,078 59,680
Restricted cash and money market accounts   2,593
Total assets at fair value 53,078 62,273
LEVEL 2    
Assets:    
Cash and money market accounts 0 0
Restricted cash and money market accounts   0
Total assets at fair value 0 0
LEVEL 3    
Assets:    
Cash and money market accounts 0 0
Restricted cash and money market accounts   0
Total assets at fair value $ 0 $ 0