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Fair Value Measurements (Details) - Recurring - Money market funds, included in cash and cash equivalents - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Assets:    
Money market funds, included in cash and cash equivalents $ 95,761 $ 34,507
Level 1    
Assets:    
Money market funds, included in cash and cash equivalents 95,761 34,507
Level 2    
Assets:    
Money market funds, included in cash and cash equivalents 0 0
Level 3    
Assets:    
Money market funds, included in cash and cash equivalents $ 0 $ 0