Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Assets and Liabilities Measured on a Recurring Basis (Details)

v3.22.2
Fair Value Measurements - Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Financial assets:    
Total financial assets $ 391,736 $ 466,078
Cash, cash equivalents and restricted cash    
Financial assets:    
Total financial assets 151,632 231,900
Certificates of deposit    
Financial assets:    
Total financial assets 3,132 3,140
Corporate bond    
Financial assets:    
Total financial assets 80,852 21,820
Commercial paper    
Financial assets:    
Total financial assets 93,041 206,724
Treasury bill    
Financial assets:    
Total financial assets 11,002 2,494
Treasury bond    
Financial assets:    
Total financial assets 49,744  
Yankee bond    
Financial assets:    
Total financial assets 2,333  
Level 1    
Financial assets:    
Total financial assets 244,673 438,624
Level 1 | Cash, cash equivalents and restricted cash    
Financial assets:    
Total financial assets 151,632 231,900
Level 1 | Certificates of deposit    
Financial assets:    
Total financial assets 0 0
Level 1 | Corporate bond    
Financial assets:    
Total financial assets 0 0
Level 1 | Commercial paper    
Financial assets:    
Total financial assets 93,041 206,724
Level 1 | Treasury bill    
Financial assets:    
Total financial assets 0 0
Level 1 | Treasury bond    
Financial assets:    
Total financial assets 0  
Level 1 | Yankee bond    
Financial assets:    
Total financial assets 0  
Level 2    
Financial assets:    
Total financial assets 147,063 27,454
Level 2 | Cash, cash equivalents and restricted cash    
Financial assets:    
Total financial assets 0 0
Level 2 | Certificates of deposit    
Financial assets:    
Total financial assets 3,132 3,140
Level 2 | Corporate bond    
Financial assets:    
Total financial assets 80,852 21,820
Level 2 | Commercial paper    
Financial assets:    
Total financial assets 0 0
Level 2 | Treasury bill    
Financial assets:    
Total financial assets 11,002 2,494
Level 2 | Treasury bond    
Financial assets:    
Total financial assets 49,744  
Level 2 | Yankee bond    
Financial assets:    
Total financial assets 2,333  
Level 3    
Financial assets:    
Total financial assets 0 0
Level 3 | Cash, cash equivalents and restricted cash    
Financial assets:    
Total financial assets 0 0
Level 3 | Certificates of deposit    
Financial assets:    
Total financial assets 0 0
Level 3 | Corporate bond    
Financial assets:    
Total financial assets 0 0
Level 3 | Commercial paper    
Financial assets:    
Total financial assets 0 0
Level 3 | Treasury bill    
Financial assets:    
Total financial assets 0 $ 0
Level 3 | Treasury bond    
Financial assets:    
Total financial assets 0  
Level 3 | Yankee bond    
Financial assets:    
Total financial assets $ 0