Inventories (Tables)

9 Months Ended

Sep. 30, 2012

Inventories [Abstract]

Inventories, net of reserves

In thousands	Sept. 30, 2012		Dec. 31, 2011
Raw materials	$	63,816	$	57,547
In-process and finished		100,771		93,096
Supplies		58,057		56,064
Total	$	222,644	$	206,707