Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events - Additional Information (Detail)

v3.20.2
Subsequent Events - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands, shares in Millions
1 Months Ended 6 Months Ended
Aug. 07, 2020
Jul. 31, 2020
Jun. 30, 2020
Jun. 30, 2019
Subsequent Event [Line Items]        
Net proceeds from common stock     $ 0 $ 0
Subsequent Event        
Subsequent Event [Line Items]        
Sale of securities $ 300,000      
Subsequent Event | At-the-market Sales (“ATM”)        
Subsequent Event [Line Items]        
Gross proceeds from common stock   $ 50,000    
Net proceeds from common stock $ 100,000 $ 48,500    
Subsequent Event | At-the-market Sales (“ATM”) | Common Stock at Purchase Price of $12.00 Per Share        
Subsequent Event [Line Items]        
Number of shares sold   3.6    
Purchase price per share   $ 12.00    
Subsequent Event | At-the-market Sales (“ATM”) | Common Stock at Purchase Price of $12.70 Per Share        
Subsequent Event [Line Items]        
Number of shares sold   0.5    
Purchase price per share   $ 12.70