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Segments and Geographic Areas (Schedule of Net Sales by Major Customer) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenue, Major Customer [Line Items]
Net sales	$ 499,300us-gaap_Revenues	$ 563,600us-gaap_Revenues	$ 654,100us-gaap_Revenues
Unites States [Member]
Revenue, Major Customer [Line Items]
Net sales	128,000us-gaap_Revenues / us-gaap_MajorCustomersAxis = country_US	150,000us-gaap_Revenues / us-gaap_MajorCustomersAxis = country_US	167,000us-gaap_Revenues / us-gaap_MajorCustomersAxis = country_US
United Kingdom [Member]
Revenue, Major Customer [Line Items]
Net sales	37,000us-gaap_Revenues / us-gaap_MajorCustomersAxis = country_GB	46,000us-gaap_Revenues / us-gaap_MajorCustomersAxis = country_GB	48,000us-gaap_Revenues / us-gaap_MajorCustomersAxis = country_GB
France [Member]
Revenue, Major Customer [Line Items]
Net sales	$ 50,000us-gaap_Revenues / us-gaap_MajorCustomersAxis = country_FR	$ 47,000us-gaap_Revenues / us-gaap_MajorCustomersAxis = country_FR	$ 46,000us-gaap_Revenues / us-gaap_MajorCustomersAxis = country_FR

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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