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Inventory Impairments and Land Option Contract Abandonments (Tables)
12 Months Ended
Nov. 30, 2013
Inventory Impairments and Land Option Contract Abandonments [Abstract]  
Schedule of significant unobservable inputs
The following table summarizes ranges for significant quantitative unobservable inputs we utilized in our fair value measurements with respect to the impaired communities or land parcels written down to fair value during the years presented:
 
 
Years Ended November 30,
Unobservable Input (a)
 
2013
 
2012
 
2011
Average selling price
 
$339,700
 
$115,200 - $556,300
 
$142,900 - $391,900
Deliveries per month
 
1
 
1 - 6
 
1 - 10
Discount rate
 
17%
 
17% - 20%
 
17% - 20%
(a)
The ranges of inputs used in each period primarily reflect the underlying variability among the housing markets where each of the impacted communities or land parcels are located, rather than fluctuations in prevailing market conditions.