Quarterly report pursuant to Section 13 or 15(d)

Organization and Description of Business - Additional Information (Detail)

v3.21.1
Organization and Description of Business - Additional Information (Detail)
$ in Thousands
3 Months Ended
Mar. 31, 2021
USD ($)
Segment
Mar. 31, 2020
USD ($)
Dec. 31, 2020
USD ($)
Class of Stock [Line Items]      
Number of operating segments | Segment 1    
Net loss $ 17,551 $ 13,088  
Cash flows from operating activities (20,561) $ (14,708)  
Accumulated deficit (694,409)   $ (676,858)
Cash and cash equivalents and marketable securities $ 125,500