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Property and Equipment (Tables)
12 Months Ended
Dec. 31, 2012
Property, Plant and Equipment [Abstract]  
Property, plant and equipment
Property and equipment, net, as of December 31, 2012 and 2011 consist of the following:
 
December 31,
 
2012
 
2011
Land
$
3,827

 
$
3,827

Building and improvements
21,297

 
19,815

Leasehold improvements
286

 
222

Machinery and equipment
32,266

 
27,701

Office and computer equipment
10,663

 
9,887

Motor vehicles
51

 
66

 
68,390

 
61,518

Less accumulated depreciation
(31,657
)
 
(27,508
)
 
$
36,733

 
$
34,010