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Property, Plant and Equipment, Net
12 Months Ended
Dec. 31, 2011
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment, Net
Note 5. Property, Plant and Equipment, Net

The components of our property, plant and equipment are summarized below (in thousands):
 
   
As of December 31,
 
   
2011
  
2010
 
Property, plant and equipment:
      
Building
 $19,997  $17,841 
Machinery and equipment
  32,242   28,744 
Leasehold improvements
  2,330   2,123 
Construction in progress
  11,574   4,139 
    66,143   52,847 
Less: accumulated depreciation and amortization
  (31,861)  (28,607)
   $34,282  $24,240 
 
Depreciation and amortization expense was $3.4 million, $2.9 million, and $3.1 million for the years ended 2011, 2010, and 2009, respectively.