Inventory - Recoverability Schedule of Inventory assets Held for Development, by Reportable Segment (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014 Community	Mar. 31, 2013 Community
Real Estate Properties [Line Items]
Number of Communities on Watch List	4	1
Undiscounted Cash Flow Analysis - Number of Communities	1	0
Undiscounted Cash Flow Analysis - Pre-analysis Book Value (BV)	$ 7,478	$ 0
Undiscounted Cash Flow Analysis - Aggregate Undiscounted Cash Flow as a % of BV	107.90%
West Segment
Real Estate Properties [Line Items]
Number of Communities on Watch List	1	0
Undiscounted Cash Flow Analysis - Number of Communities	0	0
Undiscounted Cash Flow Analysis - Pre-analysis Book Value (BV)	0	0
East Segment
Real Estate Properties [Line Items]
Number of Communities on Watch List	1	1
Undiscounted Cash Flow Analysis - Number of Communities	0	0
Undiscounted Cash Flow Analysis - Pre-analysis Book Value (BV)	0	0
Southeast Segment
Real Estate Properties [Line Items]
Number of Communities on Watch List	2	0
Undiscounted Cash Flow Analysis - Number of Communities	1	0
Undiscounted Cash Flow Analysis - Pre-analysis Book Value (BV)	7,478	0
Undiscounted Cash Flow Analysis - Aggregate Undiscounted Cash Flow as a % of BV	107.90%
Unallocated
Real Estate Properties [Line Items]
Number of Communities on Watch List	0	0
Undiscounted Cash Flow Analysis - Number of Communities	0	0
Undiscounted Cash Flow Analysis - Pre-analysis Book Value (BV)	$ 0	$ 0