Inventory - Recoverability Schedule of Inventory assets Held for Development, by Reportable Segment (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2012 Community
Real Estate Properties [Line Items]
Number of Communities on Watch List	12
Undiscounted Cash Flow Analysis - Number of Communities	3
Undiscounted Cash Flow Analysis - Pre-analysis Book Value (BV)	$ 17,655
Undiscounted Cash Flow Analysis - Aggregate Undiscounted Cash Flow as a % of BV	72.40%
West Segment
Real Estate Properties [Line Items]
Number of Communities on Watch List	5
Undiscounted Cash Flow Analysis - Number of Communities	1
Undiscounted Cash Flow Analysis - Pre-analysis Book Value (BV)	6,196
Undiscounted Cash Flow Analysis - Aggregate Undiscounted Cash Flow as a % of BV	81.30%
East Segment
Real Estate Properties [Line Items]
Number of Communities on Watch List	4
Undiscounted Cash Flow Analysis - Number of Communities	1
Undiscounted Cash Flow Analysis - Pre-analysis Book Value (BV)	7,144
Undiscounted Cash Flow Analysis - Aggregate Undiscounted Cash Flow as a % of BV	57.10%
Southeast Segment
Real Estate Properties [Line Items]
Number of Communities on Watch List	3
Undiscounted Cash Flow Analysis - Number of Communities	1
Undiscounted Cash Flow Analysis - Pre-analysis Book Value (BV)	3,087
Undiscounted Cash Flow Analysis - Aggregate Undiscounted Cash Flow as a % of BV	79.00%
Unallocated & Other
Real Estate Properties [Line Items]
Number of Communities on Watch List	0
Undiscounted Cash Flow Analysis - Number of Communities	0
Undiscounted Cash Flow Analysis - Pre-analysis Book Value (BV)	$ 1,228