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Property, Plant and Equipment-Net (Tables)
6 Months Ended
Jun. 30, 2014
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment-Net
Property, plant and equipment—net consisted of the following (in thousands):
 
June 30,
2014
 
December 31, 2013
Plant equipment
$
29,318

 
$
25,918

Building and improvements
5,791

 
5,514

Lab equipment
7,373

 
6,445

Leasehold improvements
2,718

 
2,659

Computer equipment and software
4,039

 
3,387

Furniture and fixtures
662

 
603

Land
430

 
430

Automobiles
171

 
49

Construction in progress
2,673

 
6,378

Total
53,175

 
51,383

Less: accumulated depreciation and amortization
(14,460
)
 
(11,294
)
Property, plant and equipment—net
$
38,715

 
$
40,089