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Income Taxes (Tables) | 6 Months Ended
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Jul. 01, 2017
Income Tax Disclosure [Abstract] |
Summary of Differences Between US Federal Statutory Tax Rate and Company's Consolidated Effective Tax Rate | The differences between the US federal statutory tax rate and the Company’s consolidated effective tax rate is as follows:
|  | Three Months Ended |  |  | Six Months Ended |
|  | July 1, |  |  | July 2, |  |  | July 1, |  |  | July 2, |
|  | 2017 |  |  | 2016 |  |  | 2017 |  |  | 2016 |
US federal statutory tax rate |  |  | 35.0 | % |  |  | 35.0 | % |  |  | 35.0 | % |  |  | 35.0 | %
State income taxes (net of federal benefit) |  |  | 1.8 | % |  |  | 0.8 | % |  |  | 2.4 | % |  |  | 0.1 | %
Cessation of Spanish operations |  |  | 0.4 | % |  |  | 0.0 | % |  |  | (16.0 | %) |  |  | 0.0 | %
Research and development credit |  |  | (1.1 | %) |  |  | 0.0 | % |  |  | (2.2 | %) |  |  | 0.0 | %
Tax shortfall on share-based awards |  |  | (0.8 | %) |  |  | 0.0 | % |  |  | 0.8 | % |  |  | 0.0 | %
Reserves for uncertain tax positions |  |  | 0.4 | % |  |  | 0.2 | % |  |  | 0.7 | % |  |  | 0.6 | %
Increase (decrease) in valuation allowance |  |  | 0.1 | % |  |  | (1.2 | %) |  |  | 1.2 | % |  |  | (9.4 | %)
Other |  |  | 0.7 | % |  |  | (3.3 | %) |  |  | 1.3 | % |  |  | 3.7 | %
Effective Tax Rate |  |  | 36.5 | % |  |  | 31.5 | % |  |  | 23.2 | % |  |  | 30.0 | %

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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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