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Fair Value Measurements - Fair Value of Assets and Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Assets:    
Total available for sale investments $ 81,951 $ 88,920
Recurring basis    
Assets:    
Total included in cash and cash equivalents 14,158 15,722
Total available for sale investments 81,951 88,920
Total assets measured at fair value on a recurring basis 96,109 104,642
Recurring basis | Certificate of deposit    
Assets:    
Total available for sale investments 13,925 16,023
Recurring basis | Corporate debt securities    
Assets:    
Total available for sale investments 32,828 49,535
Recurring basis | Commercial paper    
Assets:    
Total available for sale investments 10,398 13,187
Recurring basis | Non U.S. government    
Assets:    
Total available for sale investments 7,842 2,288
Recurring basis | U.S. treasury securities    
Assets:    
Total available for sale investments 16,958 7,887
Recurring basis | Money market fund    
Assets:    
Total included in cash and cash equivalents 14,158 15,722
Recurring basis | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1)    
Assets:    
Total included in cash and cash equivalents 14,158 15,722
Total available for sale investments 16,958 7,887
Total assets measured at fair value on a recurring basis 31,116 23,609
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 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 16,958 7,887
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 14,158 15,722
Recurring basis | Significant Other Observable Inputs (Level 2)    
Assets:    
Total included in cash and cash equivalents 0 0
Total available for sale investments 64,993 81,033
Total assets measured at fair value on a recurring basis 64,993 81,033
Recurring basis | Significant Other Observable Inputs (Level 2) | Certificate of deposit    
Assets:    
Total available for sale investments 13,925 16,023
Recurring basis | Significant Other Observable Inputs (Level 2) | Corporate debt securities    
Assets:    
Total available for sale investments 32,828 49,535
Recurring basis | Significant Other Observable Inputs (Level 2) | Commercial paper    
Assets:    
Total available for sale investments 10,398 13,187
Recurring basis | Significant Other Observable Inputs (Level 2) | Non U.S. government    
Assets:    
Total available for sale investments 7,842 2,288
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