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Real Estate Inventories - Summary of Real Estate Held for Development and Sale (Detail) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Real Estate Properties [Line Items] |  |
Real estate inventories | $ 20,253 | $ 44,711
Land and Land Development Costs [Member] |  |
Real Estate Properties [Line Items] |  |
Real estate inventories | 9,741 | 24,304
Cost of Construction (Including Capitalized Interest and Real Estate Taxes) [Member] |  |
Real Estate Properties [Line Items] |  |
Real estate inventories | $ 10,512 | $ 20,407

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- Definition Carrying amount as of the balance sheet date, net of valuation allowances and impairment losses, of costs of land expected to be developed in the near term plus capitalized costs of development, for purposes of selling completed units to home buyers or commercial or industrial entities.. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | debit
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |