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Inventories Additional Information (Details) (USD $) In Millions, unless otherwise specified | Apr. 04, 2015 | Jan. 03, 2015
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LIFO Method Related Items [Abstract] |  |
Inventory under the LIFO method | $ 31.4 us-gaap_LIFOInventoryAmount | $ 30.2 us-gaap_LIFOInventoryAmount
Percentage of LIFO inventory to total inventory | 11.40%us-gaap_PercentageOfLIFOInventory | 11.80%us-gaap_PercentageOfLIFOInventory

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- Definition The amount of LIFO (last in first out) inventory present at the reporting date when inventory is also valued using different valuation methods. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766 + Details
Name: | us-gaap_LIFOInventoryAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | us-gaap_LIFOMethodRelatedItemsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The percentage of LIFO (last in first out) inventory to total inventory as of the balance sheet date if other than 100 percent. + References No definition available. + Details
Name: | us-gaap_PercentageOfLIFOInventory
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant