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Basis of Presentation (Policies) | 9 Months Ended
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Oct. 02, 2021
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 2021 end on April 3, 2021, July 3, 2021, October 2, 2021, and December 31, 2021, respectively. The four fiscal quarters in 2020 ended on April 4, 2020, July 4, 2020, October 3, 2020, and December 31, 2020, respectively.
Recently Adopted Accounting Guidance | Recently Adopted Accounting Guidance In August 2020, the Financial Accounting Standards Board ("FASB") issued ASU No. 2020-06, Debt – Debt With Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging – Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity. The ASU simplifies the accounting for certain financial instruments with characteristics of liability and equity, including convertible debt instruments. The ASU reduces the number of accounting models available for convertible debt instruments, requires the use of the if-converted method for the calculation of diluted earnings per share for convertible debt instruments, and increases disclosure requirements. The Company adopted the ASU effective January 1, 2021 using a modified retrospective approach. Upon adoption, Company recorded a $66,078 decrease in additional paid in capital from the derecognition of the bifurcated equity component of the convertible debt instruments, a $59,246 increase in debt from the derecognition of the discount associated with the bifurcated equity component of the convertible debt instruments and a $20,566 increase to the opening balance of retained earnings, representing the cumulative interest expense, net of tax effects, recognized related to the amortization of the bifurcated conversion option. The adoption of the ASU did not have a significant impact on the diluted sharecount due to Vishay exercising existing rights to legally amend the indenture governing the convertible senior notes due 2025. See Note 5.
Reclassifications | Reclassifications Certain prior period amounts have been reclassified to conform to the current financial statement presentation.

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=123454820&loc=d3e5291-111683 + Details
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