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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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Jun. 30, 2013
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Mar. 31, 2013
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Dec. 31, 2012
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Jun. 30, 2012
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Dec. 31, 2011
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Jun. 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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Jun. 30, 2013
Summary Judgment Excluding Interest [Member] [Member]
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Jun. 30, 2013
Summary Judgment Including Interest [Member] [Member]
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Jun. 30, 2013
Summary Judgment Interest [Member]
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| Loss Contingencies [Line Items] | |||||||||||||
| Reserved for litigation and asserted claims | $ 16,703,000 | $ 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 | 21,705,000 | 21,844,000 | 21,384,000 | 22,064,000 | 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 | $ 9,800,000 | ||||||||||||