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Note 10 - Mortgages and Notes Payable (Details) - USD ($)
 1 Months Ended 9 Months Ended
Jun. 30, 2013
Jul. 31, 2015
Oct. 31, 2014
Letter of Credit [Member]      
Note 10 - Mortgages and Notes Payable (Details) [Line Items]      
Letters of Credit Outstanding, Amount   $ 2,600,000 $ 5,500,000
Citi Bank [Member] | Revolving Credit Facility [Member]      
Note 10 - Mortgages and Notes Payable (Details) [Line Items]      
Debt Instrument, Term 5 years    
Line of Credit Facility, Maximum Borrowing Capacity $ 75,000,000    
Debt Instrument Basis Spread On Variable Rate Number Of Business Days Prior To First Day Of Interest Period Spread Determined   2 days  
Letters of Credit Outstanding, Amount   $ 26,500,000 26,500,000
Long-term Line of Credit   0 0
JP Morgan Chase Bank [Member]      
Note 10 - Mortgages and Notes Payable (Details) [Line Items]      
Line of Credit Facility, Maximum Borrowing Capacity   50,000,000  
Warehouse Agreement Borrowings   $ 17,900,000 25,500,000
JP Morgan Chase Bank [Member] | London Interbank Offered Rate (LIBOR) [Member]      
Note 10 - Mortgages and Notes Payable (Details) [Line Items]      
Debt Instrument Variable Rate Basis Adjusted London Interbank Offered Rate LIBOR   0.19%  
Customers Bank [Member]      
Note 10 - Mortgages and Notes Payable (Details) [Line Items]      
Line of Credit Facility, Maximum Borrowing Capacity   $ 37,500,000  
Warehouse Agreement Borrowings   25,600,000 20,400,000
Nonrecourse Mortgages [Member] | Mortgages [Member] | Corporate, Non-Segment [Member]      
Note 10 - Mortgages and Notes Payable (Details) [Line Items]      
Secured Debt   $ 15,800,000 $ 16,600,000
Debt, Weighted Average Interest Rate   8.70% 7.00%
Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year   $ 300,000  
Long-term Debt, Maturities, Repayments of Principal in Year Two   1,200,000  
Long-term Debt, Maturities, Repayments of Principal in Year Three   1,300,000  
Long-term Debt, Maturities, Repayments of Principal in Year Four   1,400,000  
Long-term Debt, Maturities, Repayments of Principal in Year Five   1,500,000  
Long-term Debt, Maturities, Repayments of Principal after Year Five   10,100,000  
Nonrecourse Mortgages [Member] | Mortgages [Member] | Homebuilding [Member]      
Note 10 - Mortgages and Notes Payable (Details) [Line Items]      
Secured Debt   133,380,000 $ 103,908,000 [1]
Debt Instrument, Collateral Amount   $ 366,900,000 $ 220,100,000
Debt, Weighted Average Interest Rate   5.00% 5.00%
The 7.25% 2020 Notes and 9.125% 2020 Notes [Member] | Senior Secured Notes [Member]      
Note 10 - Mortgages and Notes Payable (Details) [Line Items]      
Debt Instrument, Collateral Amount   $ 799,900,000  
Cash Collateral for Borrowed Securities   166,400,000  
The 7.25% 2020 Notes and 9.125% 2020 Notes [Member] | Senior Secured Notes [Member] | Restricted Cash [Member] | Letter of Credit [Member]      
Note 10 - Mortgages and Notes Payable (Details) [Line Items]      
Cash Collateral for Borrowed Securities   2,600,000 $ 5,600,000
Credit Suisse Master Repurchase Agreement [Member]      
Note 10 - Mortgages and Notes Payable (Details) [Line Items]      
Line of Credit Facility, Maximum Borrowing Capacity   50,000,000  
Warehouse Agreement Borrowings   $ 25,400,000 19,700,000
Debt Instrument Variable Rate Basis Effective Rate   0.56%  
Comerica Master Repurchase Agreement [Member]      
Note 10 - Mortgages and Notes Payable (Details) [Line Items]      
Line of Credit Facility, Maximum Borrowing Capacity   $ 35,000,000  
Warehouse Agreement Borrowings   $ 19,600,000 $ 11,300,000
Debt Instrument, Interest Rate, Effective Percentage   2.75% 2.75%
Comerica Master Repurchase Agreement [Member] | London Interbank Offered Rate (LIBOR) [Member]      
Note 10 - Mortgages and Notes Payable (Details) [Line Items]      
Debt Instrument, Basis Spread on Variable Rate   2.50%  
Debt Instrument Variable Rate Basis Floor Rate   0.25%  
Minimum [Member] | JP Morgan Chase Bank [Member] | London Interbank Offered Rate (LIBOR) [Member]      
Note 10 - Mortgages and Notes Payable (Details) [Line Items]      
Debt Instrument, Basis Spread on Variable Rate   2.50%  
Minimum [Member] | Customers Bank [Member] | London Interbank Offered Rate (LIBOR) [Member]      
Note 10 - Mortgages and Notes Payable (Details) [Line Items]      
Debt Instrument, Basis Spread on Variable Rate   2.75%  
Minimum [Member] | Credit Suisse Master Repurchase Agreement [Member]      
Note 10 - Mortgages and Notes Payable (Details) [Line Items]      
Debt Instrument, Basis Spread on Variable Rate   2.25%  
Maximum [Member] | JP Morgan Chase Bank [Member] | London Interbank Offered Rate (LIBOR) [Member]      
Note 10 - Mortgages and Notes Payable (Details) [Line Items]      
Debt Instrument, Basis Spread on Variable Rate   2.63%  
Maximum [Member] | Customers Bank [Member] | London Interbank Offered Rate (LIBOR) [Member]      
Note 10 - Mortgages and Notes Payable (Details) [Line Items]      
Debt Instrument, Basis Spread on Variable Rate   5.25%  
Maximum [Member] | Credit Suisse Master Repurchase Agreement [Member]      
Note 10 - Mortgages and Notes Payable (Details) [Line Items]      
Debt Instrument, Basis Spread on Variable Rate   2.50%  
[1] Derived from the audited balance sheet as of October 31, 2014.