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Acquisitions - Additional Information (Detail) (USD $) | Dec. 27, 2014 | Sep. 27, 2014 | Dec. 28, 2013 | Apr. 01, 2014
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Business Acquisition [Line Items] |  |  |  |
Excess of purchase price included in goodwill | $ 208,233,000 us-gaap_Goodwill | $ 208,233,000 us-gaap_Goodwill | $ 205,756,000 us-gaap_Goodwill |
Envincio, LLC [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Purchase of certain assets |  |  |  | 20,300,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets / us-gaap_BusinessAcquisitionAxis = cent_EnvincioLlcMember
Excess of purchase price included in goodwill |  |  |  | $ 2,477,000 us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = cent_EnvincioLlcMember

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- Definition Amount of assets acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
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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=35741047&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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