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Significant Accounting Policies - Summary of Real Estate Assets (Detail) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Real Estate Investments [Abstract] |  |
Real estate under development, current (included in other current assets) | $ 14,757 |
Real estate and other assets held for sale (included in other current assets) | 5,066 | $ 24
Real estate under development | 185,508 | 4,586
Real estate held for investment (included in other assets, net) | 8,101 | 9,923
Total real estate | $ 213,432 | $ 14,533

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