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Income Taxes
3 Months Ended
Apr. 03, 2021
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
The Corporation's tax provision for interim periods is determined using an estimate of its annual effective tax rate, adjusted for discrete items. The following table summarizes the Corporation's income tax provision (dollars in thousands):
Three Months Ended
April 3,
2021
March 28,
2020
Income (loss) before income taxes$20,845 $(25,539)
Income taxes$5,827 $(1,643)
Effective tax rate28.0 %6.4 %

The Corporation's effective tax rate was higher in the three months ended April 3, 2021, compared to the same period last year. The variance is due to higher financial performance in the current year period and an improved full year 2021 income outlook, relative to the prior year quarter performance and full year outlook which were adversely impacted by the onset of the COVID-19 pandemic and resulting significant economic disruption. This resulted in a greater rate benefit from tax credits in the first quarter of 2020.