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Income Taxes (Details 4) - USD ($) $ in Thousands | Dec. 30, 2018 | Dec. 31, 2017
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Income Tax Disclosure [Abstract] |  |
Valuation allowance | $ (5,177) | $ (3,742)
AMT Credit carryforwards that are expected to be fully refunded | 1,600 |
Unrecognized tax benefits that would impact effective tax rate if recognized | $ 300 |

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- Definition Tax Cuts And Jobs Act Of 2017, Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax, Refundable Portion + References No definition available. + Details
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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