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Real Estate Inventories (Tables)
 12 Months Ended
Dec. 31, 2018
Real Estate [Abstract]  
Summary of real estate inventories
Real estate inventories are summarized as follows:
 
December 31,
 
2018
 
2017
 
(Dollars in thousands)
Deposits and pre-acquisition costs
$
20,726

 
$
35,846

Land held and land under development
115,987

 
47,757

Homes completed or under construction
380,956

 
302,884

Model homes
48,621

 
29,656

 
$
566,290

 
$
416,143
Inventory Impairments
The following table summarizes inventory impairments recorded during the years ended December 31, 2018, 2017 and 2016:
  
 
Year Ended December 31,
 
2018
 
2017
 
2016
 
(Dollars in Thousands)
Inventory impairments:
 
 
 
 
 
Home sales
$
10,000

 
$
2,200

 
$
2,350

Land sales
—

 
—

 
1,150

Total inventory impairments
$
10,000

 
$
2,200

 
$
3,500

 
 
 
 
 
 
Remaining carrying value of inventory impaired at year end
$
57,845

 
$
5,921

 
$
30,225

Number of projects impaired during the year
2

 
1

 
3

Total number of projects subject to periodic impairment review during the year (1)
26

 
26

 
27

 

(1)
Represents the peak number of real estate projects that we had during each respective year. The number of projects outstanding at the end of each year may be less than the number of projects listed herein.