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Note 11 - Mortgages (Details Textual) - USD ($)
$ in Thousands
Feb. 28, 2020
Jan. 22, 2020
Dec. 13, 2019
Jan. 31, 2020
Oct. 31, 2019
JP Morgan Chase Bank [Member]          
Line of Credit Facility, Maximum Borrowing Capacity     $ 50,000    
Warehouse Agreement Borrowings, Total       $ 26,700 $ 47,100
JP Morgan Chase Bank [Member] | London Interbank Offered Rate (LIBOR) [Member]          
Debt Instrument Variable Rate Basis Adjusted London Interbank Offered Rate LIBOR       1.66%  
JP Morgan Chase Bank [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]          
Debt Instrument, Basis Spread on Variable Rate     2.50%    
JP Morgan Chase Bank [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]          
Debt Instrument, Basis Spread on Variable Rate     2.625%    
Customers Bank [Member]          
Warehouse Agreement Borrowings, Total       $ 23,000 47,600
Customers Bank [Member] | Subsequent Event [Member]          
Line of Credit Facility, Maximum Borrowing Capacity $ 50,000        
Customers Bank [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] | Subsequent Event [Member]          
Debt Instrument, Basis Spread on Variable Rate 2.125%        
Customers Bank [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] | Subsequent Event [Member]          
Debt Instrument, Basis Spread on Variable Rate 4.75%        
Nonrecourse Mortgages Secured By Inventory [Member] | Mortgages [Member] | Homebuilding [Member]          
Secured Debt, Total       205,805 203,585
Debt Instrument, Collateral Amount       $ 422,200 $ 410,200
Debt, Weighted Average Interest Rate       8.20% 8.30%
Comerica Master Repurchase Agreement [Member]          
Line of Credit Facility, Maximum Borrowing Capacity   $ 50,000      
Warehouse Agreement Borrowings, Total       $ 23,300 $ 45,500
Comerica Master Repurchase Agreement [Member] | London Interbank Offered Rate (LIBOR) [Member]          
Debt Instrument Variable Rate Basis Floor Rate   0.25%      
Comerica Master Repurchase Agreement [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]          
Debt Instrument, Basis Spread on Variable Rate   1.875%      
Comerica Master Repurchase Agreement [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]          
Debt Instrument, Basis Spread on Variable Rate   3.25%