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Contract Assets and Contract Liabilities - Summary of Contract Assets and Liabilities (Detail) - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Contract Assets: Accounts Receivable |  |
Accounts receivable | $ 634 | $ 491
Total Contract Assets | 4,308 | 432
Contract Liabilities: Customer Deposits and Deferred Revenue |  |
Customer deposits | 850 | 575
Deferred revenue | 3,192 | 0
Total Contract Liabilities | 4,042 | 575
Asset Management [Member] |  |
Contract Assets: Accounts Receivable |  |
Accounts receivable | 3,976 | 0
Contract Liabilities: Customer Deposits and Deferred Revenue |  |
Deferred revenue | 3,192 | 0
Real Estate Services [Member] |  |
Contract Assets: Accounts Receivable |  |
Accounts receivable | 332 | 432
Homebuilding [Member] |  |
Contract Liabilities: Customer Deposits and Deferred Revenue |  |
Customer deposits | $ 850 | $ 575

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