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Borrowing Arrangements - Additional Information (Detail) (USD $)
 3 Months Ended 12 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 12 Months Ended 0 Months Ended 12 Months Ended 12 Months Ended 1 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Dec. 31, 2013
integer
Dec. 31, 2012
integer
Dec. 31, 2011
Dec. 31, 2013
Minimum
Dec. 31, 2011
Minimum
Dec. 31, 2013
Maximum
Dec. 31, 2011
Maximum
Dec. 31, 2013
Old Credit Facilities [Member]
integer
Dec. 31, 2012
Old Credit Facilities [Member]
Jul. 31, 2012
Amended Line Of Credit Facility [Member]
Jul. 31, 2012
Amended Line Of Credit Facility [Member]
Minimum
Rate
Jul. 31, 2012
Amended Line Of Credit Facility [Member]
Maximum
Rate
Dec. 31, 2013
Term Loans
Dec. 31, 2013
Term Loans
Minimum
Rate
Dec. 31, 2013
Term Loans
Maximum
Dec. 31, 2012
Unsecured Debt
Dec. 31, 2012
Manufactured Home [Member]
New Credit Facilities [Member]
integer
Dec. 31, 2013
Manufactured Home [Member]
New Credit Facilities [Member]
integer
Jul. 30, 2013
Manufactured Home [Member]
Old Credit Facilities [Member]
Dec. 31, 2013
Manufactured Home [Member]
Old Credit Facilities [Member]
integer
Dec. 31, 2012
Manufactured Home [Member]
Old Credit Facilities [Member]
Jul. 18, 2013
Manufactured Home [Member]
Old Credit Facilities [Member]
integer
Dec. 31, 2013
Manufactured Home [Member]
Old Credit Facilities [Member]
Minimum
Dec. 31, 2013
Manufactured Home [Member]
Old Credit Facilities [Member]
Maximum
Dec. 31, 2013
R V Resort [Member]
New Credit Facilities [Member]
Dec. 31, 2012
Recreational Vehicle Resort [Member]
integer
Dec. 31, 2012
Recreational Vehicle Resort [Member]
New Credit Facilities [Member]
Dec. 31, 2012
Recreational Vehicle Resort [Member]
Old Credit Facilities [Member]
Dec. 31, 2013
Discontinued Operations [Member]
Dec. 31, 2012
Discontinued Operations [Member]
Feb. 28, 2014
Subsequent Event [Member]
Old Credit Facilities [Member]
Jan. 31, 2014
Subsequent Event [Member]
Old Credit Facilities [Member]
Feb. 02, 2014
Subsequent Event [Member]
Old Credit Facilities [Member]
Jan. 03, 2014
Subsequent Event [Member]
Old Credit Facilities [Member]
Jan. 24, 2014
Subsequent Event [Member]
R V Resort [Member]
New Credit Facilities [Member]
Jan. 07, 2014
Subsequent Event [Member]
R V Resort [Member]
New Credit Facilities [Member]
Debt Instrument [Line Items]                                                                            
Mortgage notes payable     $ 1,992,368,000 $ 2,061,610,000                               $ 375,500,000                       $ 8,300,000            
Debt Instrument, Unamortized Premium                                                             400,000              
Mortgage notes payable, weighted average interest rate     5.00%               5.79%             0.00%                     5.098% 5.409%                
Debt, minimum interest rate     3.90%   0.00%                                                                  
Debt Instrument Maturity Year           2014 2012 2038 2023                   2022         2020 2014 2015 2022   2022           2014 2014 2018 2017
Payments of Debt Extinguishment Costs     37,800,000                                                                      
Debt, maximum interest rate     8.90%   0.00%                                                                  
Number Of Pledged Properties     147 170           16 3               1 22   29   1       2                    
Debt Instrument, Interest Rate, Stated Percentage                   6.00%                 3.90% 4.40%   5.60% 5.69% 7.20%     6.00%               5.40% 5.70% 6.80% 6.00%
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt         548,000,000                                           5,400,000                   8,400,000 4,900,000
Carrying values of properties encumbered     2,378,000,000 2,485,000,000                                                                    
New mortgage notes payable financing proceeds   200,000,000 375,500,000 159,500,000 200,000,000                           74,000,000                   85,500,000                  
Extinguishment of Debt, Amount     37,844,000 0 0                                                                  
Debt instrument face amount                             200,000,000                                              
Debt, maturity date                             Jun. 30, 2017               May 01, 2013             Jun. 01, 2014                
Repayments of Long-term Debt                   99,800,000 39,300,000                   7,800,000 312,200,000 35,100,000             63,300,000     4,000,000 16,600,000        
Debt, percentage of prepayment penalty                             2.00%                                              
Derivative, Remaining Maturity                             3 years                                              
Lines of credit, borrowing capacity     380,000,000                                                                      
Proceeds from Lines of Credit     20,000,000 0 50,000,000                                                                  
Lines of credit, maturity date                       Sep. 15, 2016                                                    
Line of credit facility, interest rate based on a margin over LIBOR     amended LOC bears a LIBOR rate plus a maximum of 1.40% to 2.00%, contains a 0.25% to 0.40% facility rate and has a maturity date of September 15, 2016. We have a one year extension option under our LOC.                                                                      
Repayments of Lines of Credit     20,000,000 0 50,000,000                                                                  
Lines of credit, commitment and arrangement fees $ 1,300,000                                                                          
Lines of credit, extension option period                       1 year                                                    
Debt Instrument Interest Additional Interest Above London Interbank Offered Rate Rate                         1.40% 2.00%   1.85% 2.80%                                          
Line of Credit Facility, Interest Rate During Period                         0.25% 0.40%                                                
Start Date To Repay Debt Without Penalty On Prepayment                             Jul. 01, 2014