Inventories (Tables)

3 Months Ended

Mar. 31, 2013

Inventory [Abstract]

Schedule of Inventories

The components of Inventories are summarized below:

(in thousands)	March 31, 2013	December 31, 2012
Finished goods	$49,067	$49,235
Work in process	45,945	44,866
Raw material and supplies	26,020	25,082
Total inventories	$121,032	$119,183