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Income Taxes - Tax Credit Carryforward Narrative (Details) $ in Millions | Apr. 28, 2018 USD ($)
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Internal Revenue Service (IRS) [Member] |
Tax Credit Carryforward [Line Items] |
Net operating loss carryforwards | $ 2.1
Federal income tax benefit | 0.4
State |
Tax Credit Carryforward [Line Items] |
Net operating loss carryforwards | 78.2
Federal income tax benefit | 5.2
Foreign tax authority |
Tax Credit Carryforward [Line Items] |
Net operating loss carryforwards | 0.3
Federal income tax benefit | $ 0.1
Foreign tax authority | Investment Tax Credit Carryforward | Malta |
Tax Credit Carryforward [Line Items] |
Percentage of qualified expenditures subject to investment tax credit | 30.00%
Total unused credits | $ 29.3
Tax Credit Carryforward, Period, 2020 Expiration | Foreign tax authority | Investment Tax Credit Carryforward | Malta |
Tax Credit Carryforward [Line Items] |
Total unused credits | 1.7
Tax Credit Carryforward, Period, Indefinite | Foreign tax authority | Investment Tax Credit Carryforward | Malta |
Tax Credit Carryforward [Line Items] |
Total unused credits | $ 27.6

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- Definition Operating Loss Carryforwards, Potential Tax Benefit + References No definition available. + Details
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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319 + Details
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- Definition The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319 + Details
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