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Commitments and Contingencies - Additional Information (Detail)
$ in Millions
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 26, 2013
Sep. 30, 2017
USD ($)
plaintiff
Sep. 30, 2017
USD ($)
plaintiff
Dec. 31, 2016
USD ($)
Jan. 18, 2017
lawsuite
Oct. 20, 2015
demolition
Loss Contingencies [Line Items]            
Number of plaintiff group | plaintiff   3 3      
Net settlement       $ 2.4    
Number of historical demolition | demolition           200
California Hawaiian            
Loss Contingencies [Line Items]            
Number of lawsuit | lawsuite         3  
Loss contingency accrual       9.9    
Monte Del Lago            
Loss Contingencies [Line Items]            
Loss contingency accrual       1.5    
Santiago Estates            
Loss Contingencies [Line Items]            
Loss contingency accrual       $ 1.9    
Hurricane Irma            
Loss Contingencies [Line Items]            
Recognized expense   $ 3.7 $ 3.7      
Revenue accrual   $ 3.5 $ 3.5      
City of Santee            
Loss Contingencies [Line Items]            
One-time rent increase 2.50%          
Annual rent increase, percentage of CPI 100.00%          
Rent increase upon turnover of site 10.00%          
Annual rent increase, percentage of CPI, prior to settlement 70.00%