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Sales (Sales To Single Customers Exceeding 10% Of Sales) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Customer "A" [Member] |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Major customer, sales amount | $ 10,809 |  | $ 4,882 | $ 3,440
Customer "B" [Member] |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Major customer, sales amount | 8,714 |  | 4,195 | 4,160
Customer "C" [Member] |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |
Major customer, sales amount |  | [1] |  | $ 3,214
[1] | Less than 10% of sales.

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- Definition Amount of revenue generated from a single external customer that accounts for 10 percent or more of an entity's revenues. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9054-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 39 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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Period Type: | duration

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- Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration