Annual report pursuant to Section 13 and 15(d)

FAIR VALUE MEASUREMENTS - Narrative (Details)

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FAIR VALUE MEASUREMENTS - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 24, 2021
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
FAIR VALUE MEASUREMENTS        
Unrealized gain (loss) due to change in fair value of equity securities   $ (464) $ (6,332) $ (9,660)
Subscription liability       500
Other investments in convertible debt instruments   2,000 2,000  
Recognized gains on convertible debt instruments     (1,600)  
Repayment in full of outstanding convertible debt instruments   419 542  
Change in fair value of contingent consideration     1,567 429
Change in fair value of warrant liabilities       (56,576)
Transfers from Level 1 to Level 2   0 0  
Transfers from Level 2 to Level 1   0 0  
Transfer into Level 3   0 0  
Transfer out of Level 3   0 0  
Business Combination, Consideration Transferred [Abstract]        
Current portion of contingent consideration     2,587  
Convertible Notes        
FAIR VALUE MEASUREMENTS        
Repayment in full of outstanding convertible debt instruments     3,100  
Subscription Agreement        
FAIR VALUE MEASUREMENTS        
Recognized loss on investments in equity securities       2,400
Recognized losses on equity investment       (12,600)
Private Placement Warrants        
FAIR VALUE MEASUREMENTS        
Change in fair value of warrant liabilities       $ 56,600
Aerosint        
FAIR VALUE MEASUREMENTS        
Change in fair value of contingent consideration $ 6,100 0 1,600  
Remaining contingent consideration   200    
Business Combination, Consideration Transferred [Abstract]        
Amount paid on achievement of technical milestones   1,600 1,000  
Value of shares paid on achievement of technical milestones   800 $ 500  
Period to achieve revenue metrics and technical milestone 3 years   3 years  
Current portion of contingent consideration   $ 0