Quarterly report pursuant to Section 13 or 15(d)

Organization and Operations Acquisition of CYS Investments, Inc. (Details)

v3.10.0.1
Organization and Operations Acquisition of CYS Investments, Inc. (Details) - USD ($)
$ in Thousands
 1 Months Ended 9 Months Ended
Jul. 31, 2018
Sep. 30, 2018
Sep. 30, 2017
Class of Stock [Line Items]      
Aggregate cash consideration exchanged for shares of CYS common stock $ 14,967    
Common Stock [Member]      
Class of Stock [Line Items]      
Number of shares of stock issued during period (in shares) 72,587,772 72,608,932 19,688
Series D Preferred Stock [Member]      
Class of Stock [Line Items]      
Number of shares of stock issued during period (in shares) 3,000,000    
Series E Preferred Stock [Member]      
Class of Stock [Line Items]      
Number of shares of stock issued during period (in shares) 8,000,000