Stockholders' Equity and Partners' Capital (Tables)
12 Months Ended
Dec. 31, 2017
Equity [Abstract]  
Schedule of Dividends Payable
In fiscal years 2017 and 2016, the Company's Board of Directors declared the following preferred and common stock dividends:
Declaration Date
 
Dividend Per Share
 
Record Date
 
Total Amount (1)
 
Payment Date
 
 
 
 
 
 
(in Thousands)
 
 
2017
 
 
 
 
 
 
 
 
Preferred Stock
 
 
 
 
 
 
 
 
December 8, 2017
 
$
0.3667

 
December 19, 2017
 
$
2,530

 
December 29, 2017
Common Stock
 
 
 
 
 
 
 
 
March 15, 2017
 
$
0.1800

 
March 31, 2017
 
$
87,122

 
April 14, 2017
June 15, 2017
 
0.1800

 
June 30, 2017
 
82,422

 
July 14, 2017
September 15, 2017
 
0.1800

 
September 29, 2017
 
82,062

 
October 13, 2017
December 8, 2017
 
0.1800

 
December 29, 2017
 
80,796

 
January 12, 2018
Total Common Dividend
 
$
0.7200

 
 
 
$
332,402

 
 
 
 
 
 
 
 
 
 
 
2016
 
 
 
 
 
 
 
 
Common Stock
 
 
 
 
 
 
 
 
March 15, 2016
 
$
0.1750

 
March 31, 2016
 
$
77,596

 
April 15, 2016
June 15, 2016
 
0.1750

 
June 30, 2016
 
83,940

 
July 15, 2016
September 15, 2016
 
0.1750

 
September 30, 2016
 
84,604

 
October 14, 2016
December 15, 2016
 
0.1800

 
December 30, 2016
 
87,040

 
January 13, 2017
Total Common Dividend
 
$
0.7050

 
 
 
$
333,180

 
 

(1) Net of estimated forfeitures of approximately $3,300 and $12,000 for the years ended December 31, 2017 and December 31, 2016, respectively, for dividends declared on employee restricted stock awards that are reported in general and administrative on the accompanying consolidated statements of operations.