Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	6 Months Ended					3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Jun. 30, 2014 Fair Value, Inputs, Level 2	Dec. 31, 2013 Fair Value, Inputs, Level 2	Jun. 30, 2014 Identified Intangible Assets	Jun. 30, 2013 Identified Intangible Assets	Jun. 30, 2014 Identified Intangible Assets	Jun. 30, 2013 Identified Intangible Assets	Jun. 30, 2014 New Manufactured Home [Member]	Jun. 30, 2014 Minimum [Member] Used Manufactured Home [Member]	Jun. 30, 2014 Maximum [Member] Used Manufactured Home [Member]
Significant Accounting Policies [Line Items]
Finite-Lived Intangible Assets, Amortization Expense, Year One	$ 349,000
Property, Plant and Equipment, Useful Life										25 years	10 years	25 years
Intangible assets and goodwill	12,100,000		12,100,000
Intangible assets	4,300,000		4,300,000
Goodwill	7,800,000		7,800,000
Accumulated amortization of identified intangible assets	2,100,000		1,900,000
Amortization expense for identified intangible assets	2,716,000	318,000				100,000	100,000	200,000	200,000
Cash and cash equivalents, restricted cash	5,000,000		5,200,000
Mortgage notes payable fair value				2,300,000,000	2,200,000,000
Accumulated amortization for deferred financing costs	27,700,000		25,400,000
Finite-Lived Intangible Assets, Amortization Expense, Year Two	349,000
Finite-Lived Intangible Assets, Amortization Expense, Year Three	251,000
Finite-Lived Intangible Assets, Amortization Expense, Year Four	87,000
Finite-Lived Intangible Assets, Amortization Expense, Year Five	$ 87,000