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Inventories
3 Months Ended
Mar. 31, 2012
Inventories [Abstract]  
Inventories

8.  Inventories   

 

       Inventories are comprised of the following (in thousands):

 

 

 

 

 

 

 

 

 

March 31,

 

December 31,

 

2012

 

2011

Raw materials and supplies

$

 4,613

 

$

 4,759

Work-in-process

 

 430

 

 

 218

Finished goods

 

 2,889

 

 

 2,343

Total inventories

$

 7,932

 

$

 7,320