Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity Arrearages in Cumulative Preferred Dividends (Details)

v3.20.1
Stockholders' Equity Arrearages in Cumulative Preferred Dividends (Details)
$ / shares in Units, $ in Thousands
 3 Months Ended
Mar. 31, 2020
USD ($)
$ / shares
Class of Stock [Line Items]  
Amount of preferred dividends in arrears $ 18,950
Series A Preferred Stock [Member]  
Class of Stock [Line Items]  
Dividend per preferred share in arrears (in usd per share) | $ / shares $ 0.507810
Amount of preferred dividends in arrears $ 2,920
Series B Preferred Stock [Member]  
Class of Stock [Line Items]  
Dividend per preferred share in arrears (in usd per share) | $ / shares $ 0.476560
Amount of preferred dividends in arrears $ 5,480
Series C Preferred Stock [Member]  
Class of Stock [Line Items]  
Dividend per preferred share in arrears (in usd per share) | $ / shares $ 0.453130
Amount of preferred dividends in arrears $ 5,347
Series D Preferred Stock [Member]  
Class of Stock [Line Items]  
Dividend per preferred share in arrears (in usd per share) | $ / shares $ 0.484375
Amount of preferred dividends in arrears $ 1,453
Series E Preferred Stock [Member]  
Class of Stock [Line Items]  
Dividend per preferred share in arrears (in usd per share) | $ / shares $ 0.468750
Amount of preferred dividends in arrears $ 3,750