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Inventory - Recoverability Schedule of Inventory Assets Held for Development, by Reportable Segment (Details) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2016 USD ($) Community | Mar. 31, 2015 USD ($) property Community
Real Estate Properties [Line Items] |  |
Number of Communities on Watch List | 2 | 2
Undiscounted Cash Flow Analysis Prepared for Number of Communities | 2 | 2
Undiscounted Cash Flow Analysis, Pre-analysis Book Value | $ | $ 21,914 |
West Segment |  |
Real Estate Properties [Line Items] |  |
Number of Communities on Watch List | 2 | 1
Undiscounted Cash Flow Analysis Prepared for Number of Communities | 2 | 0
Undiscounted Cash Flow Analysis, Pre-analysis Book Value | $ | $ 20,809 | $ 0
Undiscounted Cash Flow Analysis, Aggregate Undiscounted Cash Flow, Percentage of Book Value | 108.00% | 0.00%
Corporate and unallocated |  |
Real Estate Properties [Line Items] |  |
Number of Communities on Watch List | 0 |
Undiscounted Cash Flow Analysis Prepared for Number of Communities | 0 |
Undiscounted Cash Flow Analysis, Pre-analysis Book Value | $ | $ 1,105 |

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