Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details Textual)

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Commitments and Contingencies (Details Textual) (USD $)
1 Months Ended 3 Months Ended
Mar. 31, 2012
Mar. 31, 2014
lender
Dec. 31, 2013
Jul. 17, 2013
Mar. 31, 2013
Dec. 31, 2012
Sep. 30, 2012
Mar. 31, 2014
South Edge guarantee [Member]
Jun. 06, 2011
South Edge guarantee [Member]
Oct. 26, 2011
South Edge [Member]
JointVenture
Mar. 31, 2014
Summary Judgment Excluding Interest [Member] [Member]
Mar. 31, 2014
Summary Judgment Including Interest [Member] [Member]
Mar. 31, 2014
Summary Judgment Interest [Member]
Mar. 31, 2014
Summary Judgment Attorney Fees [Member]
Loss Contingencies [Line Items]                            
Reserved for litigation and asserted claims   $ 17,181,000 $ 16,463,000                      
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 15,753,344 699,487 877,241
Supersedeas Bond   16,930,477   16,050,604                    
Commitments and Contingencies (Textual) [Abstract]                            
Warranty reserve   21,482,000 21,971,000   21,384,000 22,064,000                
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