Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Details)

v3.20.4
Summary of Significant Accounting Policies (Details)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2020
USD ($)
item
segment
$ / shares
Dec. 31, 2019
USD ($)
$ / shares
Dec. 31, 2018
$ / shares
Investments      
Marketable securities   $ 3,500  
Restricted Cash      
Letters of credit $ 1,300    
Property and Equipment      
Impairment of property and equipment $ 0 $ 108  
Segment Information      
Number of operating segments | segment 1    
Stock-Based Compensation      
Number of stock-based compensation plans | item 2    
Dividend yield 0.00%    
Basic and diluted net loss per common share calculation:      
Difference between basic and diluted net loss per share of Common Stock (in dollars per share) | $ / shares $ 0 $ 0 $ 0
Computer equipment      
Property and Equipment      
Estimated useful life P3Y    
Laboratory equipment, office equipment, furniture and software      
Property and Equipment      
Estimated useful life P5Y