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4. Property, Plant and Equipment, net
12 Months Ended
Dec. 31, 2013
Property, Plant and Equipment [Abstract]  
4. Property, Plant and Equipment, net

Property, plant and equipment, net include the following:

    December 31,  
    2013   2012  
               
Leasehold improvements     $ 322     $ 294  
Machinery and equipment     5,576     5,289  
Less accumulated depreciation and amortization     (4,853 )   (4,470 )
Property, plant and equipment, net   $ 1,045   $ 1,113  

 

Depreciation and amortization expense relating to property, plant, and equipment for the years ended December 31, 2013 and 2012 was $406 and $420, respectively.