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Balance Sheet Components Valuation And Qualifying Accounts (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |  |  |  |
Beginning balance January 1 | $ 5,841 us-gaap_ValuationAllowancesAndReservesBalance | [1] | $ 5,596 us-gaap_ValuationAllowancesAndReservesBalance | [1] | $ 5,860 us-gaap_ValuationAllowancesAndReservesBalance | [1]
Charged to costs and expenses, net of recoveries | 2,643 us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense | [1] | 2,288 us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense | [1] | 653 us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense | [1]
Utilization | (1,195)us-gaap_ValuationAllowancesAndReservesDeductions | [1] | (1,921)us-gaap_ValuationAllowancesAndReservesDeductions | [1] | (1,151)us-gaap_ValuationAllowancesAndReservesDeductions | [1]
Currency translation and other | (328)us-gaap_ValuationAllowancesAndReservesAdjustments | [1] | (122)us-gaap_ValuationAllowancesAndReservesAdjustments | [1] | 234 us-gaap_ValuationAllowancesAndReservesAdjustments | [1]
Ending balance December 31 | $ 6,961 us-gaap_ValuationAllowancesAndReservesBalance | [1] | $ 5,841 us-gaap_ValuationAllowancesAndReservesBalance | [1] | $ 5,596 us-gaap_ValuationAllowancesAndReservesBalance | [1]
[1] | (1)Includes provision for doubtful accounts, sales returns and sales discounts granted to customers.

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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 FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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- Definition Total of 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 established to represent expected future costs. + References Reference 1: 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=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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- Definition Total of 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 established to represent expected future costs, charged to costs and expenses. + References Reference 1: 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=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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- Definition Total of the deductions 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 established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively. + References Reference 1: 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=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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