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Property, Plant and Equipment
12 Months Ended
Dec. 31, 2013
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Disclosure [Text Block]
(4)
Property, Plant and Equipment
 
Property, plant and equipment consisted of the following (in thousands):
 
 
 
December 31,
 
 
 
2013
 
2012
 
Machinery, equipment and vehicles
 
$
19,308
 
$
15,043
 
Furniture and fixtures
 
 
3,295
 
 
2,274
 
Leasehold improvements
 
 
1,553
 
 
1,058
 
Buildings
 
 
404
 
 
396
 
 
 
 
24,560
 
 
18,771
 
Accumulated depreciation and amortization
 
 
(15,329)
 
 
(13,260)
 
 
 
$
9,231
 
$
5,511
 
 
Depreciation expense was $2,982,000, $2,636,000 and $2,146,000 for the years ended December 31, 2013, 2012 and 2011, respectively.