v3.3.1.900
Stockholders' Equity of the Company Stockholders' Equity of the Company (Details) - USD ($)
$ in Thousands
 1 Months Ended 3 Months Ended 12 Months Ended
Oct. 23, 2014
Dec. 31, 2015
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Jul. 01, 2015
Jun. 30, 2015
Dividends Payable [Line Items]              
Common Stock, Shares, Issued           3,773,766  
purchase price, value of shares issued to acquire land     $ 0 $ 21,631 $ 0    
Aggregate gross proceeds     387,398 102,229 349,951    
Aggregate net proceeds after sales agent compensation   $ 249,600          
Accrued dividend and distributions              
Accrued dividends and distributions   $ 34,992 34,992 32,899      
Common Stockholders And Unitholders Dividends And Distributions Declared But Not Paid     $ (33,336) $ (31,243) $ (29,378)    
Summary of shares and units              
Common stock [1]   92,258,690 92,258,690 86,259,684      
Noncontrolling common units   1,764,775 1,764,775 1,804,200      
Common stockholders and noncontrolling unitholders [Member]              
Accrued dividend and distributions              
Accrued dividends and distributions       $ 31,243      
Common Stock              
Dividends Payable [Line Items]              
Common Stock, Shares, Issued         86,259,684   92,258,690
Accrued dividend and distributions              
Accrued dividends and distributions   $ 32,291 $ 32,291 30,191      
Summary of shares and units              
Common stock         86,259,684   92,258,690
Capital Units [Member]              
Accrued dividend and distributions              
Accrued dividends and distributions   618 618 631      
Preferred Stock [Member]              
Accrued dividend and distributions              
Accrued dividends and distributions   $ 1,656 $ 1,656 $ 1,656      
Series G Cumulative Redeemable Preferred Stock              
Summary of shares and units              
Preferred stock (in shares)   4,000,000 4,000,000 4,000,000      
Series H Cumulative Redeemable Preferred Stock              
Summary of shares and units              
Preferred stock (in shares)   4,000,000 4,000,000 4,000,000      
Restricted Stock Units (RSUs) [Member]              
Accrued dividend and distributions              
Accrued dividends and distributions   $ 427 [2] $ 427 [2] $ 421 [3]      
Time-Based Restricted Stock Units (RSUs) [Member]              
Summary of shares and units              
RSUs [4]   1,269,809 1,269,809 1,248,352      
Issuance of Equity under ATM Program [Member] | Common Stock              
Dividends Payable [Line Items]              
Share of common stock sold during the period     1,866,267 1,599,123 1,040,838    
Aggregate gross proceeds     $ 140,100 $ 104,700 $ 55,300    
Aggregate net proceeds after sales agent compensation     $ 138,200 $ 103,100 $ 54,400    
SFFGA [Member]              
Dividends Payable [Line Items]              
Common Stock, Shares, Issued 351,476            
purchase price, value of shares issued to acquire land $ 21,600            
[1] The amount includes nonvested shares.
[2] The amount includes the value of the dividend equivalents that will be paid with additional RSUs (see Note 13 “Share-Based Compensation” for additional information).
[3] The amount includes the value of the dividend equivalents that will be paid with additional RSUs (see Note 13 “Share-Based Compensation” for additional information)
[4] The amount includes nonvested RSUs. Does not include the 425,452 and 247,089 market measure-based RSUs because not all the necessary performance conditions have been met as of December 31, 2015 and 2014, respectively.