Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details)

v3.8.0.1
Income Taxes (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Subsequent Event [Line Items]        
Federal income tax rate applicable to corporations   35.00% 35.00% 35.00%
Tax provision related to the decrease in the federal income tax rate applicable to corporations   $ 17.5    
Percent of REIT taxable income the entity intends to distribute   100.00%    
Subsequent Event [Member]        
Subsequent Event [Line Items]        
Federal income tax rate applicable to corporations 21.00%