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Note 18 - Commitments and Contingencies (Details) (USD $)
 6 Months Ended 114 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Dec. 31, 2012
Note 18 - Commitments and Contingencies (Details) [Line Items]        
Non-refundable Cash Deposits $ 24,700,000   $ 24,700,000  
Capitalized Preacquisition and Other Development and Construction Costs 2,800,000   2,800,000  
Remaining Purchase Price of Land Purchase and Option Contracts 278,900,000   278,900,000  
Remaining Purchase Price of Land Purchase and Option Contracts Included In Inventories Not Owned 28,200,000   28,200,000  
Number of Joint Ventures the Company Holds Membership Interests In 20   20  
Number of Active Joint Ventures 8   8  
Number of Inactive Joint Ventures 12   12  
Number of Joint Ventures Having Project Specific Non-Recourse Debt to the Company 2   2  
Equity Method Investment, Summarized Financial Information, Non-Recourse Debt 46,411,000   46,411,000  
Outstanding Joint Venture Surety Bonds 2,700,000   2,700,000  
Joint Venture Surety Bonds Cost to Complete 200,000   200,000  
Outstanding Surety Bonds 397,000,000   397,000,000  
Surety Bonds Cost to Complete 238,600,000   238,600,000  
Mortgage Loans In Process 114,100,000   114,100,000  
Mortgage Loans In Process, Interest Rate 3.90%   3.90%  
Loans Held-for-sale, Mortgages 107,500,000   107,500,000  
Mortgage Loans Committed to Sell to Investors 119,100,000   119,100,000  
Mortgage Loan Repurchase Payments 800,000 600,000 10,400,000  
Mortgage Loans on Real Estate, New Mortgage Loans     7,600,000,000  
MortgageLoanLossExpenseProvision 0 600,000    
Mortgage Loan Repurchase Reserve 2,200,000   2,200,000  
Number of Loans Repurchased 9 4    
Insurance and Litigation Accruals 62,100,000   62,100,000 57,200,000
Mature in December 2013 [Member]
        
Note 18 - Commitments and Contingencies (Details) [Line Items]        
Equity Method Investment, Summarized Financial Information, Non-Recourse Debt 16,400,000   16,400,000  
Mature in June 2014 [Member]
        
Note 18 - Commitments and Contingencies (Details) [Line Items]        
Equity Method Investment, Summarized Financial Information, Non-Recourse Debt $ 30,000,000   $ 30,000,000