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Inventory Impairments and Land Option Contract Abandonments (Tables)
12 Months Ended
Nov. 30, 2014
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, other than land held for sale, written down to fair value during the years presented:
 
 
Years Ended November 30,
Unobservable Input (a)
 
2014
 
2013
 
2012
Average selling price
 
$216,100 - $316,800
 
$339,700
 
$115,200 - $556,300
Deliveries per month
 
1 - 4
 
1
 
1 - 6
Discount rate
 
17% - 19%
 
17%
 
17% - 20%
(a)
The ranges of inputs used in each period primarily reflect differences between the housing markets where each of the impacted communities or land parcels are located, rather than fluctuations in prevailing market conditions.