XML 30 R31.htm IDEA: XBRL DOCUMENT v2.4.0.6
Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
 3 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 9 Months Ended 3 Months Ended 3 Months Ended 9 Months Ended
Sep. 14, 2012
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Dec. 31, 2011
Mar. 04, 2011
Sep. 30, 2012
Fair Value, Inputs, Level 2
Dec. 31, 2011
Fair Value, Inputs, Level 2
Oct. 30, 2012
Natural Disasters and Other Casualty Events
Sep. 30, 2012
Natural Disasters and Other Casualty Events
Sep. 30, 2012
Chattel Loans
Sep. 30, 2012
Identified Intangible Assets
Sep. 30, 2011
Identified Intangible Assets
Sep. 30, 2012
Identified Intangible Assets
Sep. 30, 2011
Identified Intangible Assets
Sep. 30, 2012
Maximum
integer
Sep. 30, 2012
Maximum
Chattel Loans
Sep. 30, 2012
Minimum
Sep. 30, 2012
Buildings and structural and land improvements
Sep. 30, 2012
Building upgrades
Sep. 30, 2012
Furniture, Fixtures and Equipment
Sep. 30, 2012
Real Estate
Rate
Sep. 30, 2012
In-place leases
Sep. 30, 2012
8.034% Series A Cumulative Redeemable Perpetual Preferred Stock
Sep. 30, 2012
Cumulative Series C Six Point Seven Five Percent Redeemable Perpetual Preferred Stock [Member]
Sep. 14, 2012
Cumulative Series C Six Point Seven Five Percent Redeemable Perpetual Preferred Stock [Member]
Dec. 31, 2012
Subsequent Event [Member]
Dec. 31, 2012
Subsequent Event [Member]
8.034% Series A Cumulative Redeemable Perpetual Preferred Stock
Oct. 18, 2012
Subsequent Event [Member]
8.034% Series A Cumulative Redeemable Perpetual Preferred Stock
Sep. 30, 2012
Purchase Price Allocation Adjustments
Significant Accounting Policies [Line Items]                                                              
Revenue Recognition Period Of Recognition                                 1 year                            
Final Adjustment Period Maximum Range                                                             1 year
Number of reportable segments                                 2                            
Investment percentage to apply cost method accounting                                 5.00%                            
Property, Plant and Equipment, Useful Life                                       30 years 10 years 5 years 20 years 1 year              
Rental units, Salvage value                                             40.00%                
Intangible assets and goodwill   $ 12,100,000   $ 12,100,000   $ 12,100,000                                                  
Intangible assets   4,300,000   4,300,000   4,300,000                                                  
Goodwill   7,800,000   7,800,000   7,800,000                                                  
Accumulated amortization of identified intangible assets   1,400,000   1,400,000   1,200,000                                                  
Amortization expense for identified intangible assets   7,548,000 10,759,000 44,314,000 10,759,000               100,000 500,000 300,000 1,500,000                              
Cash and cash equivalents, restricted cash   4,900,000   4,900,000   4,200,000                                                  
Loans receivable, amortization term                       14 years           29 years                          
Estimated claims from hurricanes                     21,000,000                                        
Number of properties suffered from hurricanes damage                   56 70                                        
Proceeds from insurance carriers       14,700,000                                                      
Mortgage notes payable fair value               2,300,000,000 2,200,000,000                                            
Accumulated amortization for deferred financing costs   19,200,000   19,200,000   15,100,000                                                  
Provision for uncollectible receivable   4,900,000   4,900,000   4,400,000                                                  
Deferred revenue, estimated period of recognition                                 31 years   1 year                        
Right-to-use properties contract, term                                     1 year                        
Estimated Contract Termination Period       5 years                                                      
Right-to-use contract, amortization period for the upfront payments from the 7.9% of customers   5 years   5 years                                                      
Deferred revenue, estimated period of recognition      
Right-to-use annual payments by customers under the terms of the right-to-use contracts are deferred and recognized ratably over the one year period in which access to sites at certain Properties are provided.
                                                      
8.034% Series A Cumulative Redeemable Perpetual Preferred Stock, shares issued           8,000,000 8,000,000                                                
8.034% Series A Cumulative Redeemable Perpetual Preferred Stock, par value per share           $ 0.01 $ 0.01                                                
8.034% Series A Cumulative Redeemable Perpetual Preferred Stock, liquidation preference per share             $ 25.00                                                
8.034% Series A Cumulative Redeemable Perpetual Preferred Stock, dividend rate                                                 8.034% 6.75%          
8.034% Series A Cumulative Redeemable Perpetual Preferred Stock, price per share             $ 24.75                                                
8.034% Series A Cumulative Redeemable Perpetual Preferred Stock, redemption price per share             $ 25.00                                                
Preferred Stock, Shares Authorized   7,391,304   7,391,304   2,000,000                                     2,554,235   54,458        
Perpetual Preferred OP United conversion       0 200,000,000                                                    
Preferred Stock, Liquidation Preference Per Share                                                     $ 2,500.00     $ 25.00  
Peferred Stock, Shares Exchanged 5,445,765                                                            
Depositary Shares, Issued 5,445,765                                                            
Depositary Share, Liquidation Preference Per Share $ 25.00                                                            
Preferred Stock, Dividend Rate, Per-Dollar-Amount $ 0.3849625                                                     $ 0.0948460      
Stock Redeemed or Called During Period, Shares                                                         2,554,235    
Stock Redeemed or Called During Period, Value                                                         $ 64,100,000