Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Financial Assets Measured at Fair Value on Recurring Basis (Details)

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Fair Value Measurements - Financial Assets Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Short-term investments:    
Short-term investments $ 49,660  
Fair Value, Measurements, Recurring    
Short-term investments:    
Total 109,213 $ 122,222
Fair Value, Measurements, Recurring | Money Market Funds    
Cash and Cash equivalents:    
Money market funds 59,553 122,222
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Short-term investments:    
Total 59,553 122,222
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Money Market Funds    
Cash and Cash equivalents:    
Money market funds 59,553 $ 122,222
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)    
Short-term investments:    
Total 49,660  
Fair Value, Measurements, Recurring | U.S. Government Securities    
Short-term investments:    
Short-term investments 49,660  
Fair Value, Measurements, Recurring | U.S. Government Securities | Significant Other Observable Inputs (Level 2)    
Short-term investments:    
Short-term investments $ 49,660