Number of Regions in which Entity Operates

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- Definition

Write-off of a deposit on a legacy land investment

+ References

No definition available.

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- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(12))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(11))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

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- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

No definition available.

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- Definition

The number of states the entity operates in as of the balance sheet date.

+ References

No definition available.

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- Definition

The net result for the period of deducting operating expenses from operating revenues.

+ References

No definition available.

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- Definition

The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585

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- Definition

The aggregate revenue from real estate operations during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(e))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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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.

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Segment Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
Segment Information (Details) $ in Thousands	Mar. 31, 2018 USD ($) state region	Mar. 31, 2017 USD ($)	Mar. 31, 2018 USD ($) segment state region	Mar. 31, 2017 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)
Segment Reporting [Abstract]
Number of states in which home building segments operate \| state	13		13
Number of regions in which entity operates \| region	3		3
Number of homebuilding segments \| segment			3
Segment Reporting Information [Line Items]
Revenue	$ 455,178	$ 425,468	$ 827,667	$ 764,709
Operating income	13,825	7,511	20,506	8,786
Depreciation and amortization	3,066	3,155	5,573	5,832
Write-off of deposit on legacy land investment			0	2,700
Capital Expenditures			8,192	5,677
Assets	2,107,503		2,107,503		$ 2,220,995	$ 2,220,995
Operating Segments
Segment Reporting Information [Line Items]
Operating income	48,538	43,885	83,954	71,472
Depreciation and amortization	2,790	2,799	5,064	5,042
Corporate and unallocated
Segment Reporting Information [Line Items]
Operating income	(34,713)	(36,374)	(63,448)	(62,686)
Depreciation and amortization	276	356	509	790
Capital Expenditures			1,636	191
Assets	591,972		591,972		810,881
West Segment
Segment Reporting Information [Line Items]
Revenue	234,510	185,155	412,481	356,904
West Segment \| Operating Segments
Segment Reporting Information [Line Items]
Operating income	31,715	20,779	52,825	41,794
Depreciation and amortization	1,697	1,545	2,953	2,793
Capital Expenditures			4,238	3,165
Assets	830,572		830,572		779,964
East Segment
Segment Reporting Information [Line Items]
Revenue	107,412	116,640	196,265	200,799
East Segment \| Operating Segments
Segment Reporting Information [Line Items]
Operating income	8,926	10,532	16,322	12,089
Depreciation and amortization	551	598	990	1,127
Capital Expenditures			1,133	1,446
Assets	318,984		318,984		298,532
Southeast Segment
Segment Reporting Information [Line Items]
Revenue	113,256	123,673	218,921	207,006
Southeast Segment \| Operating Segments
Segment Reporting Information [Line Items]
Operating income	7,897	12,574	14,807	17,589
Depreciation and amortization	542	$ 656	1,121	1,122
Capital Expenditures			1,185	$ 875
Assets	$ 365,975		$ 365,975		$ 331,618