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Balance Sheet Components (Valuation And Qualifying Accounts) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Balance Sheet Components [Abstract] |  |  |  |  |  |
Beginning balance January 1 | $ 5,322 | [1] | $ 6,160 | [1] | $ 5,600 | [1]
Charged to costs and expenses | 1,044 | [1] | 945 | [1] | 1,789 | [1]
Deductions | 917 | [1],[2] | 1,879 | [1],[2] | 617 | [1],[2]
Currency translation and other | 411 | [1] | 96 | [1] | (612) | [1]
Ending balance December 31 | $ 5,860 | [1] | $ 5,322 | [1] | $ 6,160 | [1]
[1] | Includes provision for doubtful accounts, sales returns and sales discounts granted to customers.
[2] | Represents uncollectible accounts, net of recoveries.

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- Definition Total of the adjustments in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e24092-122690 + Details
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