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Inventory - Total Owned Inventory by Segment (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Sep. 30, 2019
--- | --- | ---
Segment Reporting Information [Line Items] |  |
Projects in progress | $ 1,534,306 | $ 1,463,055
Land held for future development | 28,531 | 28,531
Land held for sale | 11,443 | 12,662
Total owned inventory | 1,574,280 | 1,504,248
Corporate and unallocated |  |
Segment Reporting Information [Line Items] |  |
Projects in progress | 196,228 | 192,287
Land held for future development | 0 | 0
Land held for sale | 0 | 0
Total owned inventory | 196,228 | 192,287
West Segment | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Projects in progress | 733,525 | 723,094
Land held for future development | 3,483 | 3,483
Land held for sale | 4,235 | 5,160
Total owned inventory | 741,243 | 731,737
East Segment | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Projects in progress | 270,930 | 228,937
Land held for future development | 14,077 | 14,077
Land held for sale | 3,810 | 4,104
Total owned inventory | 288,817 | 247,118
Southeast Segment | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Projects in progress | 333,623 | 318,737
Land held for future development | 10,971 | 10,971
Land held for sale | 3,398 | 3,398
Total owned inventory | $ 347,992 | $ 333,106

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- Definition Carrying amount as of the balance sheet date of parcels of land held for sale, and on which the entity has no intention or no further intention to perform construction activities. + 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 The net carrying amount as of the balance sheet date of the sum of the various components of an operative builder's inventory, including finished homes. Operative builders primarily consist of entities that develop land, construct residential homes and commercial and industrial buildings thereon, and sell them to home buyers and operators of the commercial and industrial properties. + 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 of land available for development. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.(a),1(d)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 + Details
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