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Income Taxes (Tables) | 9 Months Ended
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Jan. 28, 2018
Income Tax Disclosure [Abstract] |
Summary of Differences in Income Tax Expense at Federal Income Tax Rate and Effective Income Tax Rate | The following schedule summarizes the factors that contribute to the difference between income tax expense at the federal income tax rate and the effective income tax rate reflected in the consolidated financial statements:
|  | 2018 |  |  | 2017 |
Federal income tax rate |  |  | 30.4 | % |  |  | 34.0 | %
Tax effects of the 2017 Tax Cuts and Jobs Act |  |  | 28.4 |  |  |  | — |
Tax effects of Chinese foreign exchange (losses) gains |  |  | (2.9 | ) |  |  | 1.9 |
Excess income tax benefits related to stock-based compensation |  |  | (2.3 | ) |  |  | — |
Reversal of foreign uncertain tax position |  |  | — |  |  |  | (9.1 | )
Foreign income tax rate differential |  |  | 3.9 |  |  |  | — |
U.S. state income tax expense |  |  | 0.2 |  |  |  | 0.6 |
Other |  |  | 0.9 |  |  |  | 1.5 |
|  |  | 58.6 | % |  |  | 28.9 | %

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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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