v3.24.1.u1
Fair Value Measurements - Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2024
Dec. 31, 2023
Financial assets:    
Total financial assets $ 320,111 $ 350,690
Cash, cash equivalents and restricted cash    
Financial assets:    
Total financial assets 64,459 48,875
Corporate bonds    
Financial assets:    
Total financial assets 23,745 33,781
Commercial paper    
Financial assets:    
Total financial assets 38,243 39,304
Treasury bills    
Financial assets:    
Total financial assets 134,974 122,806
Treasury bonds    
Financial assets:    
Total financial assets 58,690 105,924
Level 1    
Financial assets:    
Total financial assets 64,459 48,875
Level 1 | Cash, cash equivalents and restricted cash    
Financial assets:    
Total financial assets 64,459 48,875
Level 1 | Corporate bonds    
Financial assets:    
Total financial assets 0 0
Level 1 | Commercial paper    
Financial assets:    
Total financial assets 0 0
Level 1 | Treasury bills    
Financial assets:    
Total financial assets 0 0
Level 1 | Treasury bonds    
Financial assets:    
Total financial assets 0 0
Level 2    
Financial assets:    
Total financial assets $ 255,652 $ 301,815
Derivative, average remaining maturity 6 months 7 months
Level 2 | Cash, cash equivalents and restricted cash    
Financial assets:    
Total financial assets $ 0 $ 0
Level 2 | Corporate bonds    
Financial assets:    
Total financial assets 23,745 33,781
Level 2 | Commercial paper    
Financial assets:    
Total financial assets 38,243 39,304
Level 2 | Treasury bills    
Financial assets:    
Total financial assets 134,974 122,806
Level 2 | Treasury bonds    
Financial assets:    
Total financial assets 58,690 105,924
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 | Corporate bonds    
Financial assets:    
Total financial assets 0 0
Level 3 | Commercial paper    
Financial assets:    
Total financial assets 0 0
Level 3 | Treasury bills    
Financial assets:    
Total financial assets 0 0
Level 3 | Treasury bonds    
Financial assets:    
Total financial assets $ 0 $ 0