Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity Public Offering (Details)

v3.20.2
Stockholders' Equity Public Offering (Details) - USD ($)
$ / shares in Units, $ in Thousands
 9 Months Ended
Mar. 22, 2019
Sep. 30, 2020
Sep. 30, 2019
Mar. 21, 2019
Class of Stock [Line Items]        
Proceeds from issuance of common stock, net of offering costs $ 284,500 $ 312 $ 335,666  
Issuance costs incurred in common stock offering $ 300      
Common Stock [Member]        
Class of Stock [Line Items]        
Number of shares of stock issued during period (in shares) 18,000,000 50,729 24,399,107  
Price per share of common stock issued during period (in usd per share)       $ 13.76
Over-Allotment Option [Member] | Common Stock [Member]        
Class of Stock [Line Items]        
Number of shares of stock issued during period (in shares) 2,700,000