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Summary of Significant Accounting Policies - Additional Information 4 (Detail) - $ / shares
 6 Months Ended
Jul. 16, 2020
Jul. 16, 2019
Jun. 30, 2020
Dec. 31, 2019
Operations And Summary Of Significant Accounting Policies [Line Items]        
Performance multiplier, minimum     0.00%  
Performance multiplier, maximum     200.00%  
Participating securities that share in losses     0  
Preferred stock, conversion price per share   $ 4.00 $ 4.00  
Earliest conversion date for convertible preferred stock     Jul. 16, 2020  
Restricted Stock        
Operations And Summary Of Significant Accounting Policies [Line Items]        
Shares of unvested restricted stock outstanding     1,481,889 1,092,309
Series A and Series B Convertible Preferred Stock | Subsequent Event        
Operations And Summary Of Significant Accounting Policies [Line Items]        
Aggregate common stock upon conversion 43,750,000