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Inventories (Tables)
12 Months Ended
Dec. 31, 2012
Inventories [Abstract]  
Inventories on a FIFO basis
Inventories at December 31, 2012 and 2011, on a FIFO basis, were as follows:

(In thousands)
 
December 31, 2012
  
December 31, 2011
 
Raw materials
 $15,731  $18,727 
Work in process
  13,168   18,425 
Finished manufactured goods
  32,293   35,675 
Total inventories
 $61,192  $72,827