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Fair Value Measurements - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Liabilities:    
Contingent earnout liability $ 6,151 $ 454
Significant Unobservable Inputs (Level 3)    
Liabilities:    
Contingent earnout liability 6,151 454
Money Market Funds    
ASSETS    
Money market funds 10,026 10,028
Money Market Funds | Quoted Prices in Active Markets (Level 1)    
ASSETS    
Money market funds $ 10,026 $ 10,028