Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENTS - Narrative (Details)

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FAIR VALUE MEASUREMENTS - Narrative (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Jun. 24, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Unrealized gain (loss) due to change in fair value of equity securities $ 300,000 $ (3,400,000) $ (148,000) $ (5,080,000)    
Other investments in convertible debt instruments 2,000,000.0   2,000,000.0      
Recognized gains on convertible debt instruments 0   0      
Unrealized loss on convertible debt instruments   (800,000)   (800,000)    
Change in fair value of contingent consideration 0   0 (4,000)    
Transfers from Level 1 to Level 2 0 0 0 0    
Transfers from Level 2 to Level 1 0 0 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 197,000   197,000   $ 2,587,000  
Transaction costs 6,000,000.0   6,000,000.0      
Aerosint            
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]            
Change in fair value of contingent consideration   $ 100,000   0    
Business Combination, Consideration Transferred [Abstract]            
Fair value of contingent consideration           $ 6,100,000
Fair value of contingent consideration based on revenue metric 200,000   200,000      
Amount paid on achievement of technical milestones     1,600,000 1,000,000.0    
Value of shares paid on achievement of technical milestones     800,000 $ 500,000    
Current portion of contingent consideration $ 200,000   $ 200,000      
Period to achieve revenue metrics and technical milestone       3 years