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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) | 9 Months Ended |  |  |  | 3 Months Ended | 9 Months Ended
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Sep. 30, 2014 | Sep. 30, 2013 | Dec. 31, 2013 | Sep. 30, 2014 Fair Value, Inputs, Level 2 | Dec. 31, 2013 Fair Value, Inputs, Level 2 | Sep. 30, 2014 Identified Intangible Assets | Sep. 30, 2013 Identified Intangible Assets | Sep. 30, 2014 Identified Intangible Assets | Sep. 30, 2013 Identified Intangible Assets | Sep. 30, 2014 New Manufactured Home [Member] | Sep. 30, 2014 Minimum [Member] Used Manufactured Home [Member] | Sep. 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 | 3,791,000 | 803,000 |  |  |  | 100,000 | 100,000 | 300,000 | 300,000 |  |  |
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 | 28,800,000 |  | 25,400,000 |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Two | 251,000 |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Three | 87,000 |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Four | 87,000 |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Five | $ 87,000 |  |  |  |  |  |  |  |  |  |  |

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- Definition Amount of amortization expense expected to be recognized during the first fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References No definition available. + Details
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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