Quarterly report pursuant to Section 13 or 15(d)

Fair Value of Financial Instruments - Classification of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details)

v3.21.1
Fair Value of Financial Instruments - Classification of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Fair Value, Recurring - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Quoted Prices in Active Markets for Identical Assets (Level 1)    
Assets:    
Total cash equivalents $ 12,794 $ 24,210
Total financial assets 12,794  
Quoted Prices in Active Markets for Identical Assets (Level 1) | Money Market Mutual Funds    
Assets:    
Total cash equivalents 12,794 24,210
Significant Other Observable Inputs (Level 2)    
Assets:    
Total cash equivalents 15,221 4,500
Total financial assets 22,716  
Significant Other Observable Inputs (Level 2) | Commercial Paper    
Assets:    
Total cash equivalents 15,221 4,500
Short-term investments 7,495  
Significant Unobservable Inputs (Level 3)    
Liabilities:    
Warrants 83 65
Contingent consideration 60,455 65,043
Liabilities $ 60,538 $ 65,108