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Property, Plant and Equipment (Tables)
12 Months Ended
Dec. 31, 2012
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
Property, Plant and Equipment and related Accumulated Depreciation, including equipment under capital leases, as of December 31, consisted of the following:
 
2012
 
2011
Land
$
4,294

 
$
4,383

Buildings and improvements
52,597

 
49,931

Machinery and manufacturing equipment
140,330

 
135,794

Office equipment
88,814

 
86,740

Work in progress
8,875

 
10,101

Total Property, Plant and Equipment
294,910

 
286,949

Less: Accumulated Depreciation
(208,717
)
 
(199,795
)
Net Property, Plant and Equipment
$
86,193

 
$
87,154