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Summary of Significant Accounting Policies Variable interest entities and unconsolidated joint ventures (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Variable Interest Entity [Line Items] |  |  |
Increase (decrease) in investments in unconsolidated joint ventures and other similar arrangements | $ (8,951) |  |
Investment in unconsolidated joint ventures | 28,016 | $ 36,967 |
Distribution of single-family lots from unconsolidated LLC's | 28,130 | 8,236 | $ 25,689
Payments to Acquire Interest in Subsidiaries and Affiliates | $ 21,746 | $ 18,162 | $ 20,415
Minimum [Member] |  |  |
Variable Interest Entity [Line Items] |  |  |
Equity Method Investment, Ownership Percentage | 25.00% | 25.00% |
Maximum [Member] |  |  |
Variable Interest Entity [Line Items] |  |  |
Equity Method Investment, Ownership Percentage | 74.00% | 74.00% |

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- Definition The cash outflow associated with the acquisition of or advances to an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, and joint venture or equity method investment) or the acquisition of an additional interest in a subsidiary (controlled entity). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585 + Details
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