Annual report pursuant to Section 13 and 15(d)

Subsequent Events (Details)

v3.19.1
Subsequent Events (Details) - $ / shares
1 Months Ended
Mar. 06, 2019
Apr. 30, 2019
Dec. 31, 2018
Dec. 31, 2017
Subsequent Event [Line Items]        
Preferred Stock, Par or Stated Value Per Share     $ 0.001 $ 0.001
Subsequent Event [Member]        
Subsequent Event [Line Items]        
Preferred Stock, Dividends, Per Share, Cash Paid   $ 0.46875    
Subsequent Event [Member] | Common Stock [Member]        
Subsequent Event [Line Items]        
Common Stock, Dividends, Per Share, Declared $ 0.20      
Dividends Payable, Date of Record Mar. 26, 2019      
Dividends Payable, Date to be Paid Apr. 10, 2019      
Subsequent Event [Member] | Series A Cumulative Redeemable Preferred Stock [Member]        
Subsequent Event [Line Items]        
Preferred Stock, Dividends Per Share, Declared $ 0.46875      
Preferred Stock, Par or Stated Value Per Share $ 0.001      
Dividends Payable, Date of Record Apr. 15, 2019      
Dividends Payable, Date to be Paid Apr. 30, 2019