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Basis of Presentation (Policies) | 6 Months Ended
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Jun. 30, 2012
Basis of Presentation [Abstract] |
Fiscal Period, Policy | The Company reports interim financial information for 13-week periods beginning on a Sunday and ending on a Saturday, except for the first fiscal quarter, which always begins on January 1, and the fourth fiscal quarter, which always ends on December 31. The four fiscal quarters in 2012 end on March 31, 2012, June 30, 2012, September 29, 2012, and December 31, 2012, respectively. The four fiscal quarters in 2011 ended on April 2, 2011, July 2, 2011, October 1, 2011, and December 31, 2011, respectively.
New Accounting Pronouncements or Change in Accounting Principle, Description | In May 2011, the FASB issued Accounting Standards Update (“ASU”) No. 2011-4, Fair Value Measurement (Topic 820), Amendments to Achieve Common Fair Value Measurement and Disclosure Requirements in U.S. GAAP and IFRS. The ASU generally aligns the principles for fair value measurements and the related disclosure requirements under GAAP and International Financial Reporting Standards. The updated guidance clarifies existing fair value measurement and disclosure requirements and requires additional disclosure requirements. The ASU is effective for the Company for interim and annual periods beginning after January 1, 2012. Vishay adopted the ASU on January 1, 2012. The adoption of the ASU had no effect on the Company’s financial position, results of operations, or liquidity. In September 2011, the FASB issued ASU No. 2011-8, Testing Goodwill for Impairment. Under the revised guidance, the Company has the option of performing a qualitative assessment before calculating the fair value of the reporting unit when testing goodwill for impairment. If the Company determines, on the basis of qualitative factors, that the fair value of the reporting unit is more likely than not less than the carrying amount, the two-step impairment test would be required. The ASU does not change how goodwill is calculated or assigned to reporting units, nor does it revise the requirement to test goodwill annually for impairment. In addition, the ASU does not amend the requirement to test goodwill for impairment between annual tests if events or circumstances warrant; however, it does revise the examples of events and circumstances that an entity should consider. The ASU is effective for annual and interim goodwill impairment tests beginning after January 1, 2012. Vishay adopted the ASU on January 1, 2012. The adoption of the ASU had no effect on the Company’s financial position, results of operations, or liquidity.

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- Definition Disclosure of accounting policy for determining an entity's fiscal year or other fiscal period. This disclosure may include identification of the fiscal period end-date, the length of the fiscal period, any reporting period lag between the entity and its subsidiaries, or equity investees. If a reporting lag exists, the closing date of the entity having a different period end is generally noted, along with an explanation of the necessity for using different closing dates. Any intervening events that materially affect the entity's financial position or results of operations are generally also disclosed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 06 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=7656940&loc=d3e5291-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.3A-03.(b)) -URI http://asc.fasb.org/extlink&oid=6959686&loc=d3e355100-122828 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph k -Article 1 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph b -Article 3A Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 4 -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. Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.3A-02.(b)) -URI http://asc.fasb.org/extlink&oid=6959686&loc=d3e355033-122828 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph b -Article 3A + Details
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