Investment in Unconsolidated Joint Ventures (Temco Associates, LLC) (Details) (USD $)
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12 Months Ended | 3 Months Ended | |||||
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2011
Temco Associates
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Dec. 31, 2012
Temco Associates
Venture
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Dec. 31, 2012
Forestar [Member]
Temco Associates
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Dec. 31, 2012
Residential Real Estate [Member]
Temco Associates
Venture
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Schedule of Equity Method Investments [Line Items] | |||||||
Ownership Percentage of partner joint venture (percent) | 50.00% | ||||||
Number of joint ventures (ventures) | 2 | 1 | |||||
Share of impairment charges | $ 14,600,000 | ||||||
Impairment losses | 488,000 | 100,131,000 | 2,554,000 | 608,000 | |||
Cash balance of joint venture | $ 91,000 |