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Summary of Significant Accounting Policies - Changes in the Carrying Amount of Goodwill (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |
--- | --- | ---
Jan. 03, 2015 | Dec. 28, 2013 | Jan. 01, 2011
Goodwill [Roll Forward] |  |  |
Balance beginning of period | $ 687,955 us-gaap_Goodwill |  | $ 526,011 us-gaap_Goodwill
Goodwill, Acquired During Period | 129,328 us-gaap_GoodwillAcquiredDuringPeriod | 166,761 us-gaap_GoodwillAcquiredDuringPeriod |
Measurement period adjustments to goodwill acquired in prior year | 94 us-gaap_GoodwillPurchaseAccountingAdjustments | (3,417)us-gaap_GoodwillPurchaseAccountingAdjustments |
Goodwill Translation Accounting Adjustments | 8,886 midd_GoodwillTranslationAccountingAdjustments | 1,400 midd_GoodwillTranslationAccountingAdjustments |
Balance end of period | 808,491 us-gaap_Goodwill | 687,955 us-gaap_Goodwill | 526,011 us-gaap_Goodwill
Commercial Foodservice Equipment Group [Member] |  |  |
Goodwill [Roll Forward] |  |  |
Balance beginning of period | 444,321 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = midd_CommercialFoodserviceEquipmentGroupMember |  | 397,246 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = midd_CommercialFoodserviceEquipmentGroupMember
Goodwill, Acquired During Period | 12,567 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = midd_CommercialFoodserviceEquipmentGroupMember | 50,999 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = midd_CommercialFoodserviceEquipmentGroupMember |
Measurement period adjustments to goodwill acquired in prior year | (1,533)us-gaap_GoodwillPurchaseAccountingAdjustments / us-gaap_StatementBusinessSegmentsAxis = midd_CommercialFoodserviceEquipmentGroupMember | (3,473)us-gaap_GoodwillPurchaseAccountingAdjustments / us-gaap_StatementBusinessSegmentsAxis = midd_CommercialFoodserviceEquipmentGroupMember |
Goodwill Translation Accounting Adjustments | 4,465 midd_GoodwillTranslationAccountingAdjustments / us-gaap_StatementBusinessSegmentsAxis = midd_CommercialFoodserviceEquipmentGroupMember | 451 midd_GoodwillTranslationAccountingAdjustments / us-gaap_StatementBusinessSegmentsAxis = midd_CommercialFoodserviceEquipmentGroupMember |
Balance end of period | 450,890 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = midd_CommercialFoodserviceEquipmentGroupMember | 444,321 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = midd_CommercialFoodserviceEquipmentGroupMember | 397,246 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = midd_CommercialFoodserviceEquipmentGroupMember
Food Processing Group [Member] |  |  |
Goodwill [Roll Forward] |  |  |
Balance beginning of period | 127,872 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = midd_FoodProcessingGroupMember |  | 128,765 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = midd_FoodProcessingGroupMember
Goodwill, Acquired During Period | 11,061 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = midd_FoodProcessingGroupMember | 0 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = midd_FoodProcessingGroupMember |
Measurement period adjustments to goodwill acquired in prior year | 0 us-gaap_GoodwillPurchaseAccountingAdjustments / us-gaap_StatementBusinessSegmentsAxis = midd_FoodProcessingGroupMember | 56 us-gaap_GoodwillPurchaseAccountingAdjustments / us-gaap_StatementBusinessSegmentsAxis = midd_FoodProcessingGroupMember |
Goodwill Translation Accounting Adjustments | 4,421 midd_GoodwillTranslationAccountingAdjustments / us-gaap_StatementBusinessSegmentsAxis = midd_FoodProcessingGroupMember | 949 midd_GoodwillTranslationAccountingAdjustments / us-gaap_StatementBusinessSegmentsAxis = midd_FoodProcessingGroupMember |
Balance end of period | 134,512 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = midd_FoodProcessingGroupMember | 127,872 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = midd_FoodProcessingGroupMember | 128,765 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = midd_FoodProcessingGroupMember
Residential Kitchen [Member] |  |  |
Goodwill [Roll Forward] |  |  |
Balance beginning of period | 115,762 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = midd_ResidentialKitchenMember |  | 0 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = midd_ResidentialKitchenMember
Goodwill, Acquired During Period | 105,700 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = midd_ResidentialKitchenMember | 115,762 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = midd_ResidentialKitchenMember |
Measurement period adjustments to goodwill acquired in prior year | 1,627 us-gaap_GoodwillPurchaseAccountingAdjustments / us-gaap_StatementBusinessSegmentsAxis = midd_ResidentialKitchenMember | 0 us-gaap_GoodwillPurchaseAccountingAdjustments / us-gaap_StatementBusinessSegmentsAxis = midd_ResidentialKitchenMember |
Goodwill Translation Accounting Adjustments |  | 0 midd_GoodwillTranslationAccountingAdjustments / us-gaap_StatementBusinessSegmentsAxis = midd_ResidentialKitchenMember |
Balance end of period | $ 223,089 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = midd_ResidentialKitchenMember | $ 115,762 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = midd_ResidentialKitchenMember | $ 0 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = midd_ResidentialKitchenMember

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 + Details
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- Definition Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=21917927&loc=d3e961-128460 + Details
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