Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity Common Stock Rollforward (Details)

v3.19.2
Stockholders' Equity Common Stock Rollforward (Details) - shares
1 Months Ended 6 Months Ended
Mar. 22, 2019
Jul. 31, 2018
Jun. 30, 2019
Jun. 30, 2018
Dec. 31, 2018
Dec. 31, 2017
Increase (Decrease) in Common Stock Outstanding [Roll Forward]            
Common shares outstanding at beginning of period (in shares)     248,085,721      
Common shares outstanding at end of period (in shares)     272,899,638      
Number of nonvested restricted common shares outstanding (in shares)     1,213,639 1,593,701 1,593,701 1,284,010
Common Stock [Member]            
Increase (Decrease) in Common Stock Outstanding [Roll Forward]            
Common shares outstanding at beginning of period (in shares)   175,470,398 248,085,721 174,496,587    
Number of shares of stock issued during period (in shares) 18,000,000 72,600,000 24,390,456 12,468    
Number of shares of restricted common stock issued during period (in shares)     423,461 961,343    
Common shares outstanding at end of period (in shares)     272,899,638 175,470,398