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

Inventories consisted of the following:

(In thousands)
March 31,
2012
 
December 31,
2011
           
Raw materials
$
864
 
$
986
Work in process
 
605
   
479
Finished goods
 
441
   
389
Supplies, including off-site inventory
 
2,818
   
2,714
 
$
4,728
 
$
4,568