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Fair Value Measurements - Fair Value of Assets and Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Assets:    
Total available for sale investments $ 48,529 $ 53,168
Recurring basis    
Assets:    
Total included in cash and cash equivalents 18,330 21,606
Total available for sale investments 48,529 53,168
Total assets measured at fair value on a recurring basis 66,859 74,774
Recurring basis | Certificate of deposit    
Assets:    
Total available for sale investments 6,511 8,333
Recurring basis | Corporate debt securities    
Assets:    
Total available for sale investments 18,328 19,373
Recurring basis | Commercial paper    
Assets:    
Total available for sale investments 5,289 6,202
Recurring basis | Non U.S. government    
Assets:    
Total available for sale investments   834
Recurring basis | U.S. treasury securities    
Assets:    
Total available for sale investments 18,401 18,426
Recurring basis | Money market fund    
Assets:    
Total included in cash and cash equivalents 18,330 21,606
Recurring basis | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1)    
Assets:    
Total included in cash and cash equivalents 18,330 21,606
Total available for sale investments 18,401 18,426
Total assets measured at fair value on a recurring basis 36,731 40,032
Recurring basis | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) | Certificate of deposit    
Assets:    
Total available for sale investments 0 0
Recurring basis | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) | Corporate debt securities    
Assets:    
Total available for sale investments 0 0
Recurring basis | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) | Commercial paper    
Assets:    
Total available for sale investments 0 0
Recurring basis | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) | Non U.S. government    
Assets:    
Total available for sale investments   0
Recurring basis | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) | U.S. treasury securities    
Assets:    
Total available for sale investments 18,401 18,426
Recurring basis | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1) | Money market fund    
Assets:    
Total included in cash and cash equivalents 18,330 21,606
Recurring basis | Significant Other Observable Inputs (Level 2)    
Assets:    
Total included in cash and cash equivalents 0 0
Total available for sale investments 30,128 34,742
Total assets measured at fair value on a recurring basis 30,128 34,742
Recurring basis | Significant Other Observable Inputs (Level 2) | Certificate of deposit    
Assets:    
Total available for sale investments 6,511 8,333
Recurring basis | Significant Other Observable Inputs (Level 2) | Corporate debt securities    
Assets:    
Total available for sale investments 18,328 19,373
Recurring basis | Significant Other Observable Inputs (Level 2) | Commercial paper    
Assets:    
Total available for sale investments 5,289 6,202
Recurring basis | Significant Other Observable Inputs (Level 2) | Non U.S. government    
Assets:    
Total available for sale investments   834
Recurring basis | Significant Other Observable Inputs (Level 2) | U.S. treasury securities    
Assets:    
Total available for sale investments 0 0
Recurring basis | Significant Other Observable Inputs (Level 2) | Money market fund    
Assets:    
Total included in cash and cash equivalents 0 0
Recurring basis | Significant Unobservable Inputs (Level 3)    
Assets:    
Total included in cash and cash equivalents 0 0
Total available for sale investments 0 0
Total assets measured at fair value on a recurring basis 0 0
Recurring basis | Significant Unobservable Inputs (Level 3) | Certificate of deposit    
Assets:    
Total available for sale investments 0 0
Recurring basis | Significant Unobservable Inputs (Level 3) | Corporate debt securities    
Assets:    
Total available for sale investments 0 0
Recurring basis | Significant Unobservable Inputs (Level 3) | Commercial paper    
Assets:    
Total available for sale investments 0 0
Recurring basis | Significant Unobservable Inputs (Level 3) | Non U.S. government    
Assets:    
Total available for sale investments   0
Recurring basis | Significant Unobservable Inputs (Level 3) | U.S. treasury securities    
Assets:    
Total available for sale investments 0 0
Recurring basis | Significant Unobservable Inputs (Level 3) | Money market fund    
Assets:    
Total included in cash and cash equivalents $ 0 $ 0