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PROPERTY AND EQUIPMENT (Tables)
 12 Months Ended
Dec. 31, 2013
Property, Plant and Equipment [Abstract]  
Property and equipment
Property and equipment consist of the following (in thousands):
 
December 31,
 
2013
 
2012
Land
$
820

 
$
820

Building and improvements
15,605

 
11,652

Office and lab equipment
20,055

 
19,056

Furniture and fixtures
423

 
374

Construction-in-progress
746

 
619

 
37,649

 
32,521

Less: Accumulated depreciation
(22,756
)
 
(20,713
)
Property and equipment, net
$
14,893

 
$
11,808