Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity Common Stock Rollforward (Details)

v3.20.4
Stockholders' Equity Common Stock Rollforward (Details) - shares
 12 Months Ended
Mar. 22, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Increase (Decrease) in Common Stock Outstanding [Roll Forward]        
Common shares outstanding at beginning of period (in shares)   272,935,731    
Number of shares of stock issued during period (in shares)       0
Number of shares of common stock repurchased during period (in shares)   (105,300) (1,500) 0
Common shares outstanding at end of period (in shares)   273,703,882 272,935,731  
Number of nonvested restricted common shares outstanding (in shares)   1,221,995 1,062,901 1,593,701
Common Stock [Member]        
Increase (Decrease) in Common Stock Outstanding [Roll Forward]        
Common shares outstanding at beginning of period (in shares)   272,935,731 248,085,721 174,496,587
Number of shares of stock issued during period (in shares) 18,000,000 61,225 24,439,436 72,616,483
Number of shares of restricted common stock issued during period (in shares)   812,226 412,074 972,651
Number of shares of common stock repurchased during period (in shares)   (105,300) (1,500)  
Common shares outstanding at end of period (in shares)   273,703,882 272,935,731 248,085,721