Inventories, net (Tables)

3 Months Ended

Mar. 31, 2013

Inventory Disclosure [Abstract]

Schedule of Inventories, Net

	December 31,		March 31,
	2012		2013
	(In thousands)
Raw materials	$	5,375	$	6,102
Billet		7,180		7,553
Wire rod		19,577		21,902
Work in process		6,523		6,163
Finished products		30,912		29,361
Supplies		30,882		30,746
Total	$	100,449	$	101,827