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Real Estate Inventories - Summary of Real Estate Inventories (Detail) - USD ($) $ in Thousands | Dec. 31, 2018 | Jan. 01, 2018 | Dec. 31, 2017
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Real estate inventories owned: |  |  |
Homes completed or under construction | $ 959,911 |  | $ 793,685
Land under development | 1,743,537 |  | 1,934,556
Land held for future development | 201,874 |  | 138,651
Model homes | 238,828 |  | 211,658
Total real estate inventories owned | 3,144,150 |  | 3,078,550
Real estate inventories not owned: |  |  |
Land purchase and land option deposits | 71,909 |  | 27,003
Total real estate inventories not owned | 71,909 |  | 27,003
Total real estate inventories | $ 3,216,059 | $ 3,056,236 | $ 3,105,553

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- Definition The net carrying amount as of the balance sheet date of the sum of the various components of an operative builder's owned inventory. + References No definition available. + Details
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- Definition The net carrying amount as of the balance sheet date of the sum of the various components of an operative builder's real estate not owned. + References No definition available. + Details
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- Definition Carrying amount as of the balance sheet date of capitalized construction costs of homes for future sale. + 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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- Definition Carrying amount net of impairment reserves as of the balance sheet date primarily consisting of deposits for land purchases (including option payments), related acquisition costs, and land which is not expected to be developed in the next two years. + 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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- Definition Total of (1) improvements, (2) held-for-sale, (3) land and land under development, (4) construction-in-process, (5) mortgage loans held-in-inventory, and (6) other real estate investments which are considered inventory due to being held for sale or disposition. + References No definition available. + Details
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