Commitments and Contingencies (Details Textual) (USD $)
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0 Months Ended | 1 Months Ended | ||||||||||||
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Dec. 09, 2010
lender
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Mar. 31, 2012
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Sep. 30, 2013
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Jun. 30, 2013
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Dec. 31, 2012
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Sep. 30, 2012
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Jun. 30, 2012
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Dec. 31, 2011
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Sep. 30, 2013
South Edge guarantee [Member]
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Jun. 06, 2011
South Edge guarantee [Member]
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Oct. 26, 2011
South Edge [Member]
JointVenture
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Sep. 30, 2013
Summary Judgment Excluding Interest [Member] [Member]
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Sep. 30, 2013
Summary Judgment Including Interest [Member] [Member]
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Sep. 30, 2013
Summary Judgment Interest [Member]
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Loss Contingencies [Line Items] | ||||||||||||||
Reserved for litigation and asserted claims | $ 16,807,000 | $ 16,067,000 | ||||||||||||
Joint venture ownership percentage | 3.53% | |||||||||||||
Springing Repayment Guarantee_Original demand Letter | 13,200,000 | |||||||||||||
Number of co-ventures in joint venture | 4 | |||||||||||||
Litigation Judgment Amount | 15,053,857 | 15,753,344 | 699,487 | |||||||||||
Supersedeas Bond | 16,050,604 | |||||||||||||
Commitments and Contingencies (Textual) [Abstract] | ||||||||||||||
Warranty reserve | 22,257,000 | 21,844,000 | 22,064,000 | 22,973,000 | 21,243,000 | 23,136,000 | ||||||||
Number of lenders filing petition for involuntary bankruptcy | 3 | |||||||||||||
Amount requested in demand for arbitration related to alleged breaches | 13,500,000 | |||||||||||||
Additional amount requested in demand for arbitration related to pro rata future infrastructure improvement costs subsequently dismissed | $ 9,800,000 |