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Income Taxes - Additional Information (Details) (USD $) | 12 Months Ended |  |
--- | --- | --- | ---
Jan. 03, 2015 | Dec. 28, 2013 | Dec. 29, 2012 | Jan. 01, 2011 | Jan. 02, 2010
Income Tax Disclosure [Abstract] |  |  |  |  |
Undistributed earnings of certain international subsidiaries from which deferred taxes and foreign withholding taxes are not provided | $ 86,100,000 midd_PermanentlyReinvestedForeignEarnings | $ 57,800,000 midd_PermanentlyReinvestedForeignEarnings |  |  |
Unrecognized tax benefits rleated to federal, state and foreign taxes | 12,474,000 us-gaap_UnrecognizedTaxBenefits | 12,727,000 us-gaap_UnrecognizedTaxBenefits |  | 12,122,000 us-gaap_UnrecognizedTaxBenefits | 15,591,000 us-gaap_UnrecognizedTaxBenefits
Unrecognized tax benefits related to federal, state and foreign taxes that would impact the effective tax rate if recognized | 12,200,000 us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate |  |  |  |
Unrecognized tax benefits, accured interest | 1,700,000 us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued |  |  |  |
Unrecognized tax benefits, penalties | 3,000,000 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAccrued |  |  |  |
Unrecognized tax benefits, interest recognized | (300,000)midd_UnrecognizedTaxBenefitsInterestExpenseIncomeOnIncomeTaxesExpense | 400,000 midd_UnrecognizedTaxBenefitsInterestExpenseIncomeOnIncomeTaxesExpense | (200,000)midd_UnrecognizedTaxBenefitsInterestExpenseIncomeOnIncomeTaxesExpense |  |
Unrecognized tax benefits, penalties recognized | $ 1,100,000 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense | $ 200,000 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense | $ (400,000)us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense |  |

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- Definition Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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- Definition Amount of statutory penalties accrued for a tax position claimed or expected to be claimed by the entity, in its tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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- Definition Amount of expense for penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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- Definition Amount of interest expense accrued for an underpayment of income taxes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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