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Segment Information (Land-Related Charges By Segment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Segment Reporting Information
Total land-related charges	$ 99,446	$ 191,912	$ 19,336
Northeast [Member]
Segment Reporting Information
Total land-related charges	74,488	51,362	2,079
Southeast [Member]
Segment Reporting Information
Total land-related charges	8,140	55,689	3,089
Florida [Member]
Segment Reporting Information
Total land-related charges	1,166	9,702	715
Texas [Member]
Segment Reporting Information
Total land-related charges	1,204	2,521	515
Midwest [Member]
Segment Reporting Information
Total land-related charges	7,361	8,917	3,383
West [Member]
Segment Reporting Information
Total land-related charges	5,159	56,995	8,960
Other Homebuilding [Member]
Segment Reporting Information
Total land-related charges	$ 1,928	$ 6,726	$ 595

X

- Definition

Nonrecurring impairment charges related to the write-off of production-related equipment and inventory. This tag is used when an Entity charges this cost to cost of goods sold.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2(a))
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

+ Details

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Balance Type:	debit
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X

- 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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- Details

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- Details

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