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Investment in Unconsolidated Joint Ventures - Additional Information (Detail) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2015 USD ($) site | Sep. 30, 2014 USD ($) | Sep. 30, 2015 USD ($) site | Sep. 30, 2014 USD ($) | Dec. 31, 2014 USD ($)
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity in income of unconsolidated joint ventures | $ 1,882 | $ 1,237 | $ 3,606 | $ 3,768 |
Adjustment depreciation |  |  | 800 | 700 |
Distributions, including those in excess of basis |  |  | 3,400 | 3,300 |
Distribution in excess of basis |  |  | 1,400 | 2,000 |
Additional Investments in Joint Ventures |  |  | $ 4,000 | 3,489 |
Number Of Joint Venture Sites | site | 3,125 |  | 3,125 |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | $ 17,554 |  | $ 17,554 |  | $ 13,512
Equity Method Investment, Net Sales Proceeds |  |  |  | 100 |
Other Regions | Meadows Investments |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity in income of unconsolidated joint ventures |  |  | $ 1,176 | 1,703 |
Number Of Joint Venture Sites | site | 1,077 |  | 1,077 |  |
Equity Method Investment, Ownership Percentage | 50.00% |  | 50.00% |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | $ 137 |  | $ 137 |  | 0
Other Regions | Other Investments [Member] |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity in income of unconsolidated joint ventures |  |  | $ 0 | 25 |
Number Of Joint Venture Sites | site | 0 |  | 0 |  |
Equity Method Investment, Ownership Percentage | 20.00% |  | 20.00% |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | $ 0 |  | $ 0 |  | 0
Other Regions | ECHO Financing |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity in income of unconsolidated joint ventures |  |  | $ (28) | 28 |
Number Of Joint Venture Sites | site | 0 |  | 0 |  |
Equity Method Investment, Ownership Percentage | 50.00% |  | 50.00% |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | $ 10,274 |  | $ 10,274 |  | 6,302
Investment in unconsolidated joint ventures |  |  | 10,000 |  |
Florida | Lakeshore Investments |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity in income of unconsolidated joint ventures |  |  | $ 1,694 | 1,288 |
Number Of Joint Venture Sites | site | 342 |  | 342 |  |
Equity Method Investment, Ownership Percentage | 65.00% |  | 65.00% |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | $ 17 |  | $ 17 |  | 9
Arizona | Voyager Investments |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity in income of unconsolidated joint ventures |  |  | $ 764 | $ 724 |
Number Of Joint Venture Sites | site | 1,706 |  | 1,706 |  |
Equity Method Investment, Ownership Percentage | 50.00% |  | 50.00% |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | $ 7,126 |  | $ 7,126 |  | $ 7,201
Other Regions | Other Investments [Member] |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity Method Investment, Ownership Percentage |  | 20.00% |  | 20.00% |
Recreational Vehicle Resort | Voyager Investments |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity Method Investment, Ownership Percentage | 50.00% |  | 50.00% |  |
Servicing Assets | Voyager Investments |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity Method Investment, Ownership Percentage | 33.00% |  | 33.00% |  |

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