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Note 7 - Inventories (Tables)
3 Months Ended
Mar. 31, 2019
Notes Tables  
Schedule of Inventory [Table Text Block]
   
March 31,
   
December 31,
 
   
2019
   
2018
 
   
(Dollars in thousands)
 
Housing completed or under construction:
               
West
  $
516,900
    $
521,960
 
Mountain
   
356,177
     
347,738
 
East
   
77,197
     
82,738
 
Subtotal
   
950,274
     
952,436
 
Land and land under development:
               
West
   
699,704
     
705,591
 
Mountain
   
420,155
     
402,657
 
East
   
78,965
     
72,310
 
Subtotal
   
1,198,824
     
1,180,558
 
Total inventories
  $
2,149,098
    $
2,132,994
 
Schedule of Inventory Impairments [Table Text Block]
   
Three Months Ended
 
   
March 31,
 
   
2019
   
2018
 
   
(Dollars in thousands)
 
West
  $
-
    $
375
 
Mountain
   
400
     
175
 
East
   
210
     
-
 
Total inventory impairments
  $
610
    $
550
 
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, 2019
   
16
    $
610
    $
10,476
     
2
     
N/A
 
March 31, 2018
   
24
    $
550
    $
5,223
     
2
     
12
%