Quarterly report pursuant to Section 13 or 15(d)

Organization and Nature of Operations - Additional Information (Details)

v3.21.1
Organization and Nature of Operations - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Jul. 14, 2018
Jul. 13, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]          
Common stock, par value $ 0.0001   $ 0.0001 $ 0.0001  
Common stock, shares authorized 300,000,000   300,000,000 25,000,000 10,000,000
Preferred stock, par value $ 0.0001   $ 0.0001    
Preferred stock, shares authorized 10,000,000   10,000,000    
Accumulated deficit $ 160,438   $ 153,202    
Net cash used in operating activities 8,078 $ 7,043 28,300    
Cash and cash equivalents $ 15,954   $ 23,906