Purchased Intangible Assets and Goodwill (Changes in Goodwill) (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Goodwill [Roll Forward]
Goodwill	$ 178,987,000us-gaap_GoodwillGross	$ 182,254,000us-gaap_GoodwillGross	$ 181,447,000us-gaap_GoodwillGross
Accumulated impairment losses	(14,875,000)	(14,875,000)
Goodwill, net beginning balance	167,379,000us-gaap_Goodwill	166,572,000us-gaap_Goodwill
Other	(3,267,000)us-gaap_GoodwillOtherChanges	807,000us-gaap_GoodwillOtherChanges
Accumulated impairment losses	(14,875,000)	(14,875,000)
Goodwill, net ending balance	164,112,000us-gaap_Goodwill	167,379,000us-gaap_Goodwill
Americas
Goodwill [Roll Forward]
Goodwill	161,997,000	165,264,000	164,457,000
Accumulated impairment losses	(9,434,000)	(9,434,000)
Goodwill, net beginning balance	155,830,000	155,023,000
Other	(3,267,000)	807,000
Accumulated impairment losses	(9,434,000)	(9,434,000)
Goodwill, net ending balance	152,563,000	155,830,000
U.S. Sourcing
Goodwill [Roll Forward]
Goodwill	16,990,000	16,990,000	16,990,000
Accumulated impairment losses	(5,441,000)	(5,441,000)
Goodwill, net beginning balance	11,549,000	11,549,000
Other	0	0
Accumulated impairment losses	(5,441,000)	(5,441,000)
Goodwill, net ending balance	11,549,000	11,549,000
Property, Plant and Equipment \| Americas
Goodwill [Roll Forward]
Goodwill, Purchase accounting adjustments	4,700,000
Deferred Tax Liability \| Americas
Goodwill [Roll Forward]
Goodwill, Purchase accounting adjustments	$ 1,400,000

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (g)

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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