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Property, Plant and Equipment
12 Months Ended
Dec. 31, 2013
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
Note 5 — Property, Plant and Equipment

The components of property, plant and equipment are:
 
 
December 31,
 
 
(in thousands)
 
 
2013
  
2012
 
Land
 
$
253
  
$
253
 
Building and improvements
  
6,540
   
6,302
 
Rental property
  
5,311
   
5,289
 
Furniture and equipment
  
25,431
   
24,557
 
 
  
37,535
   
36,401
 
Less accumulated depreciation
  
(32,041
)
  
(30,544
)
 
 
$
5,494
  
$
5,857
 

The estimated useful lives of buildings and improvements and rental property are twenty to twenty-five years.  The estimated useful lives of furniture and equipment range from three to eight years.  Depreciation expense was $1,502,000 and $1,465,000 for 2013 and 2012, respectively.

The Company leases a portion of its headquarters facility to various tenants.  Net rent received from these leases totaled $448,000 and $174,000 for 2013 and 2012, respectively.  Future minimum rent payments due to the Company under these lease arrangements are approximately $306,000 in 2014.

The Company leases office space under various operating leases. Rental expense on these operating leases was approximately $2.6 million and $2.4 million for 2013 and 2012, respectively.  Future minimum lease payments under all non-cancelable operating leases are (in thousands):
 
2014
 
$
1,725
 
2015
  
1,090
 
2016
  
805
 
2017
  
522
 
2018
  
353
 
Thereafter
  
854
 
 
 
$
5,349