Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity Schedule of Preferred Dividends Declared (Details)

v3.19.1
Stockholders' Equity Schedule of Preferred Dividends Declared (Details) - $ / shares
3 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Series A Preferred Stock [Member]          
Class of Stock [Line Items]          
Declaration Date Mar. 19, 2019 Dec. 18, 2018 Sep. 20, 2018 Jun. 19, 2018 Mar. 20, 2018
Record Date Apr. 12, 2019 Dec. 31, 2018 Oct. 12, 2018 Jul. 12, 2018 Apr. 12, 2018
Payment Date Apr. 29, 2019 Jan. 28, 2019 Oct. 29, 2018 Jul. 27, 2018 Apr. 27, 2018
Dividends declared per preferred share (in usd per share) $ 0.507810 $ 0.507810 $ 0.507810 $ 0.507810 $ 0.507810
Series B Preferred Stock [Member]          
Class of Stock [Line Items]          
Declaration Date Mar. 19, 2019 Dec. 18, 2018 Sep. 20, 2018 Jun. 19, 2018 Mar. 20, 2018
Record Date Apr. 12, 2019 Dec. 31, 2018 Oct. 12, 2018 Jul. 12, 2018 Apr. 12, 2018
Payment Date Apr. 29, 2019 Jan. 28, 2019 Oct. 29, 2018 Jul. 27, 2018 Apr. 27, 2018
Dividends declared per preferred share (in usd per share) $ 0.476560 $ 0.476560 $ 0.476560 $ 0.476560 $ 0.476560
Series C Preferred Stock [Member]          
Class of Stock [Line Items]          
Declaration Date Mar. 19, 2019 Dec. 18, 2018 Sep. 20, 2018 Jun. 19, 2018 Mar. 20, 2018
Record Date Apr. 12, 2019 Dec. 31, 2018 Oct. 12, 2018 Jul. 12, 2018 Apr. 12, 2018
Payment Date Apr. 29, 2019 Jan. 28, 2019 Oct. 29, 2018 Jul. 27, 2018 Apr. 27, 2018
Dividends declared per preferred share (in usd per share) $ 0.453130 $ 0.453130 $ 0.453130 $ 0.453130 $ 0.453130
Series D Preferred Stock [Member]          
Class of Stock [Line Items]          
Declaration Date Mar. 19, 2019 Dec. 18, 2018 Sep. 20, 2018    
Record Date Apr. 01, 2019 Dec. 31, 2018 Oct. 01, 2018    
Payment Date Apr. 15, 2019 Jan. 28, 2019 Oct. 15, 2018    
Dividends declared per preferred share (in usd per share) $ 0.484375 $ 0.484375 $ 0.484375    
Series E Preferred Stock [Member]          
Class of Stock [Line Items]          
Declaration Date Mar. 19, 2019 Dec. 18, 2018 Sep. 20, 2018    
Record Date Apr. 01, 2019 Dec. 31, 2018 Oct. 01, 2018    
Payment Date Apr. 15, 2019 Jan. 28, 2019 Oct. 15, 2018    
Dividends declared per preferred share (in usd per share) $ 0.468750 $ 0.468750 $ 0.468750