Inventories (Tables)

3 Months Ended

Mar. 31, 2013

Components of Inventories

The components of inventories are as follows:

	March 31, 2013			December 31, 2012
(In thousands)
Raw materials	$	131,726		$	125,909
Work in process		8,892			8,287
Finished goods		76,223			78,788
Supplies and materials		119,594			119,284
Inventories at FIFO or average cost		336,435			332,268
Excess of FIFO or average cost over LIFO cost		(66,254	)		(63,501	)
Inventories, net	$	270,181		$	268,767