Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENTS - Change in Fair Value (Details)

v3.21.2
FAIR VALUE MEASUREMENTS - Change in Fair Value (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Sep. 30, 2021
Sep. 30, 2020
Changes of Fair Value of Warrant Liabilities [Roll Forward]          
Change in fair value of warrant liability       $ (5,390) $ 0
Private warrant          
Changes of Fair Value of Warrant Liabilities [Roll Forward]          
Warrant liability, beginning of period $ 22,736 $ 23,912 $ 19,061 19,061  
Change in fair value of warrant liability (9,065) (1,176) 4,851    
Warrant liability, end of period $ 13,671 $ 22,736 $ 23,912 $ 13,671