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Investment in Unconsolidated Joint Ventures - Additional Information (Detail) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2019 USD ($) joint_venture_site | Sep. 30, 2018 USD ($) | Sep. 30, 2019 | Sep. 30, 2019 site
Schedule of Equity Method Investments |  |  |  |
Number of sites | 2 |  |  | 5,941
Economic interest (in percentage) |  |  | 65.00% |
Income from distribution made to us | $ 10.7 | $ 3.0 |  |
Distributions, including those in excess of basis | $ 3.2 | $ 0.1 |  |
Crosswinds |  |  |  |
Schedule of Equity Method Investments |  |  |  |
Economic interest (in percentage) |  |  | 49.00% |
Recreational Vehicle Resort | Voyager |  |  |  |
Schedule of Equity Method Investments |  |  |  |
Economic interest (in percentage) |  |  | 50.00% |
Servicing Assets | Voyager |  |  |  |
Schedule of Equity Method Investments |  |  |  |
Economic interest (in percentage) |  |  | 33.00% |

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