Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENTS - Assets and Liability measured on recurring basis (Details)

v3.22.1
FAIR VALUE MEASUREMENTS - Assets and Liability measured on recurring basis (Details) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Assets      
Recognized loss on investments in equity securities $ 1,700,000    
Subscription liability     $ 500,000
Other investments in convertible debt instruments 6,800,000    
Recognized gains on convertible debt instruments 0    
Change in fair value of warrant liabilities   $ 56,576,000  
Change in fair value of contingent consideration 114,000    
Transfer into Level 3 0 0  
Transfer out of Level 3 0 0  
Fair Value, Transfers Between Level 1 and Level 2      
Transfer from Level 1 to level 2 0 0  
Transfer from Level 2 to level 1 0 0  
Subscription Agreement      
Assets      
Recognized loss on investments in equity securities     2,400,000
Private Placement Warrants      
Assets      
Change in fair value of warrant liabilities 0 (56,600,000)  
Level 3      
Movement in Level 3 assets measured at fair value      
Balance at beginning of period 6,750,000 3,000,000 3,000,000
Changes in fair value   25,000  
Balance at end of period 6,750,000 3,025,000 6,750,000
Movement in Level 3 liabilities measured at fair value      
Balance at beginning of period 5,654,000 93,328,000 93,328,000
Changes in fair value (114,000) 56,576,000  
Exercise of private placement warrants   $ (149,904,000)  
Balance at end of period 5,540,000   5,654,000
Recurring      
Assets      
Total assets 197,226,000   257,840,000
Total liabilities 5,540,000   5,654,000
Recurring | Contingent Consideration      
Assets      
Total liabilities 5,540,000   5,654,000
Recurring | Money market funds      
Assets      
Total assets 87,581,000   46,521,000
Recurring | Commercial paper      
Assets      
Total assets 56,282,000   70,401,000
Recurring | Corporate bonds      
Assets      
Total assets 16,108,000   65,617,000
Recurring | Government bonds      
Assets      
Total assets 17,271,000   36,476,000
Recurring | Assetbacked securities      
Assets      
Total assets 7,514,000   24,655,000
Recurring | Equity securities      
Assets      
Total assets 5,720,000   7,420,000
Recurring | Other investments      
Assets      
Total assets 6,750,000   6,750,000
Recurring | Level 1      
Assets      
Total assets 93,301,000   53,941,000
Recurring | Level 1 | Money market funds      
Assets      
Total assets 87,581,000   46,521,000
Recurring | Level 1 | Equity securities      
Assets      
Total assets 5,720,000   7,420,000
Recurring | Level 2      
Assets      
Total assets 97,175,000   197,149,000
Recurring | Level 2 | Commercial paper      
Assets      
Total assets 56,282,000   70,401,000
Recurring | Level 2 | Corporate bonds      
Assets      
Total assets 16,108,000   65,617,000
Recurring | Level 2 | Government bonds      
Assets      
Total assets 17,271,000   36,476,000
Recurring | Level 2 | Assetbacked securities      
Assets      
Total assets 7,514,000   24,655,000
Recurring | Level 3      
Assets      
Total assets 6,750,000   6,750,000
Total liabilities 5,540,000   5,654,000
Recurring | Level 3 | Contingent Consideration      
Assets      
Total liabilities 5,540,000   5,654,000
Recurring | Level 3 | Other investments      
Assets      
Total assets $ 6,750,000   $ 6,750,000