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Investment in Unconsolidated Joint Ventures - Additional Information (Detail) $ in Thousands |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Jan. 04, 2016 USD ($) | Sep. 30, 2016 USD ($) site | Sep. 30, 2015 USD ($) | Sep. 30, 2016 USD ($) site | Sep. 30, 2015 USD ($) | Dec. 31, 2015 USD ($)
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Equity in income of unconsolidated joint ventures |  | $ 496 | $ 1,882 | $ 2,142 | $ 3,606 |
Adjustment depreciation |  |  |  | 1,000 | 800 |
Distributions, including those in excess of basis |  |  |  | 5,500 | 3,400 |
Distributions of income from unconsolidated joint ventures |  |  |  |  | 1,400 |
Investment in unconsolidated joint ventures |  |  |  | $ 5,000 | 4,000 |
Number of Sites | site |  | 3,125 |  | 3,125 |  |
Investments |  | $ 19,198 |  | $ 19,198 |  | $ 17,741
Voyager Investments |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Proceeds from Equity Method Investment, Dividends or Distributions, Return of Capital |  | $ 4,100 |  |  |  |
ECHO Financing |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Investment in unconsolidated joint ventures | $ 5,000 |  |  |  |  |
Other Regions | Meadows Investments |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Equity in income of unconsolidated joint ventures |  |  |  | $ 1,026 | 1,176 |
Number of Sites | site |  | 1,077 |  | 1,077 |  |
Ownership percentage ( in percentage) |  | 50.00% |  | 50.00% |  |
Investments |  | $ 288 |  | $ 288 |  | 162
Other Regions | ECHO Financing |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Equity in income of unconsolidated joint ventures |  |  |  | $ (36) | (28) |
Investment in unconsolidated joint ventures | $ 15,300 |  |  |  |  |
Number of Sites | site |  | 0 |  | 0 |  |
Ownership percentage ( in percentage) |  | 50.00% |  | 50.00% |  |
Investments |  | $ 15,331 |  | $ 15,331 |  | 10,367
Florida | Lakeshore Investments |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Equity in income of unconsolidated joint ventures |  |  |  | $ 250 | 1,694 |
Number of Sites | site |  | 342 |  | 342 |  |
Ownership percentage ( in percentage) |  | 65.00% |  | 65.00% |  |
Investments |  | $ 64 |  | $ 64 |  | 46
Arizona | Voyager Investments |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Equity in income of unconsolidated joint ventures |  |  |  | $ 902 | $ 764 |
Proceeds from loans |  | $ 8,500 |  |  |  |
Number of Sites | site |  | 1,706 |  | 1,706 |  |
Ownership percentage ( in percentage) |  | 50.00% |  | 50.00% |  |
Investments |  | $ 3,500 |  | $ 3,500 |  | $ 7,166
Recreational Vehicle Resort | Voyager Investments |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Ownership percentage ( in percentage) |  | 50.00% |  | 50.00% |  |
Servicing Assets | Voyager Investments |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Ownership percentage ( in percentage) |  | 33.00% |  | 33.00% |  |

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