Acquisitions (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2012
Aggregate purchase consideration for the acquisition	$ 2,705,000
Excess consideration recorded as goodwill	50,526,000
Goodwill deductible for tax purposes	5,241,000
Legal and consulting fees	80,000
Additional cost associated with inventory	60,000
Award Metals facilities operated in U.S.	6
Award Metals [Member]
Aggregate purchase consideration for the acquisition	13,369,000
Payment for aggregate purchase consideration	1,861,000
Excess consideration recorded as goodwill	4,328,000
D.S. Brown [Member]
Aggregate purchase consideration for the acquisition	97,643,000
Excess consideration recorded as goodwill	$ 46,198,000