Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Financial Assets and Liabilities Carried at Fair Value on Recurring Basis (Details)

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Fair Value Measurements - Financial Assets and Liabilities Carried at Fair Value on Recurring Basis (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2022
Dec. 31, 2021
Transfers between Levels      
Transfer into Level 3 $ 0 $ 0  
Transfer out of Level 3 0 0  
Level 1 to Level 2 transfers, Assets 0 0  
Level 2 to Level 1 transfers, Assets 0 0  
Level 1 to Level 2 transfers, Liabilities 0 0  
Level 2 to Level 1 transfers, Liabilities 0 0  
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount 1 0 0  
Fair Value, Assets, Level 2 to Level 1 Transfers, Amount 1 0 0  
Fair Value, Liabilities, Level 1 to Level 2 Transfers, Amount 1 0 0  
Fair Value, Liabilities, Level 2 to Level 1 Transfers, Amount 1 0 0  
Recurring      
Assets:      
Cash equivalents 30,029 30,029  
Equity securities 523 523 $ 774
Total financial assets 30,552 30,552  
Liabilities:      
Contingent consideration under RPAs and CPPAs 3,075 3,075 8,075
Recurring | Money market funds      
Assets:      
Cash equivalents 10,054 10,054  
Recurring | US treasury bills      
Assets:      
Cash equivalents 19,975 19,975  
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)      
Assets:      
Cash equivalents 30,029 30,029  
Equity securities 523 523 774
Total financial assets 30,552 30,552  
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Money market funds      
Assets:      
Cash equivalents 10,054 10,054  
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | US treasury bills      
Assets:      
Cash equivalents 19,975 19,975  
Recurring | Significant Unobservable Inputs (Level 3)      
Liabilities:      
Contingent consideration under RPAs and CPPAs $ 3,075 $ 3,075 $ 8,075