Goodwill and Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2015

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, 2015 were as follows:

	Metals Segment			Plastics Segment		Total
Balance as of January 1, 2015
Goodwill	$	116,377		$	12,973	$	129,350
Accumulated impairment losses	(116,377		)	—		(116,377		)
Balance as of January 1, 2015	—			12,973		12,973
Balance as of June 30, 2015
Goodwill	116,377			12,973		129,350
Accumulated impairment losses	(116,377		)	—		(116,377		)
Balance as of June 30, 2015	$	—		$	12,973	$	12,973

Summary of the components of intangible assets

The following table summarizes the components of intangible assets, all of which relate to the Metals reporting unit:

	June 30, 2015				December 31, 2014
	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Customer relationships	$	115,193	$	69,628	$	116,268	$	64,922
Trade name	7,747		2,988		7,864		2,655
Total	$	122,940	$	72,616	$	124,132	$	67,577

Summary of the estimated annual amortization expense

The following is a summary of the estimated annual amortization expense for 2015 and each of the next 4 years:

2015	$	10,688
2016	10,688
2017	8,665
2018	4,548
2019	4,548