Inventories (Tables)

3 Months Ended

Mar. 31, 2012

Inventories [Abstract]

Schedule of Inventories

(in thousands)	March 31, 2012	December 31, 2011
Finished goods	$63,131	$63,328
Work in process	45,938	39,552
Raw material and supplies	29,230	30,769
Total inventories	$138,299	$133,649