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Reporting Segments and Related Information - Additional Information (Details) | 3 Months Ended
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Mar. 31, 2019 USD ($) segment | Mar. 31, 2018 USD ($)
Revenue from External Customer [Line Items] |  |
Number of reportable segments | segment | 5 |
Segment losses | $ 11,694,000 | $ 11,924,000
Real estate - resort/residential |  |
Revenue from External Customer [Line Items] |  |
Total revenues | 0 |
Segment losses | $ 648,000 | $ 415,000

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