Goodwill and Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in carrying amounts of goodwill

The changes in carrying amounts of goodwill during the six months ended June 30, 2013 were as follows:

	Metals Segment			Plastics Segment		Total
Balance as of January 1, 2013
Goodwill	$	117,544		$	12,973	$	130,517
Accumulated impairment losses	(60,217		)	—		(60,217		)
Balance as of January 1, 2013	57,327			12,973		70,300
Currency valuation	(787		)	—		(787		)
Balance as of June 30, 2013
Goodwill	116,757			12,973		129,730
Accumulated impairment losses	(60,217		)	—		(60,217		)
Balance as of June 30, 2013	$	56,540		$	12,973	$	69,513

Summary of the components of intangible assets

The following table summarizes the components of intangible assets:

	June 30, 2013				December 31, 2012
	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Customer relationships	$	118,034	$	50,090	$	119,118	$	45,317
Non-compete agreements	3,888		3,403		3,888		3,235
Trade name	8,054		1,561		8,297		1,188
Developed technology	1,400		719		1,400		486
Total	$	131,376	$	55,773	$	132,703	$	50,226

Summary of the estimated annual amortization expense

The following is a summary of the estimated annual amortization expense for 2013 and each of the next 4 years:

2013	$	11,756
2014	11,722
2015	10,956
2016	10,956
2017	8,932