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Note 7 - Inventories (Tables)
6 Months Ended
Jun. 30, 2016
Notes Tables  
Schedule of Inventory [Table Text Block]
   
June 30,
   
December 31,
 
   
2016
   
2015
 
   
(Dollars in thousands)
 
Housing Completed or Under Construction:
               
West
  $ 498,341     $ 365,867  
Mountain
    295,775       253,578  
East
    139,806       127,591  
Subtotal
    933,922       747,036  
Land and Land Under Development:
               
West
    511,643       580,682  
Mountain
    232,414       259,484  
East
    149,039       176,760  
Subtotal
    893,096       1,016,926  
Total Inventories
  $ 1,827,018     $ 1,763,962  
Schedule of Inventory Impairments [Table Text Block]
   
Three Months Ended
   
Six Months Ended
 
   
June 30,
   
June 30,
 
   
2016
   
2015
   
2016
   
2015
 
   
(Dollars in thousands)
 
West
  $ 1,400     $ -     $ 1,400     $ -  
Mountain
    -       -       -       -  
East
    200       -       200       350  
Total Inventory Impairments
  $ 1,600     $ -     $ 1,600     $ 350  
Quantitative Data for Fair Value of the Impaired Inventory [Table Text Block]
   
Impairment Data
   
Quantitative Data
 
Three Months Ended
 
Total
Subdivisions
Tested
   
Inventory
Impairments
   
Fair Value of
Inventory
After
Impairments
   
Number of
Subdivisions
Impaired
   
Discount Rate
 
   
(Dollars in thousands)
           
March 31, 2016
    14     $ -     $ -       -       N/A    
June 30, 2016
    17     $ 1,600     $ 6,415       2     12% to 15%  
                                           
March 31, 2015
    22     $ 350     $ 3,701       1       8.7%    
June 30, 2015
    22     $ -     $ -       -       N/A