Quarterly report pursuant to Section 13 or 15(d)

Acquisitions - Summary of Preliminary Recording of Fair Values of Assets Acquired and Liabilities Assumed (Detail)

v2.4.1.9
Acquisitions - Summary of Preliminary Recording of Fair Values of Assets Acquired and Liabilities Assumed (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 27, 2014
Sep. 27, 2014
Dec. 28, 2013
Apr. 01, 2014
Business Acquisition [Line Items]        
Goodwill $ 208,233us-gaap_Goodwill $ 208,233us-gaap_Goodwill $ 205,756us-gaap_Goodwill  
Envincio, LLC [Member]        
Business Acquisition [Line Items]        
Current assets, net of cash and cash equivalents acquired       6,650us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents
/ us-gaap_BusinessAcquisitionAxis
= cent_EnvincioLlcMember
Fixed assets       20us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
/ us-gaap_BusinessAcquisitionAxis
= cent_EnvincioLlcMember
Goodwill       2,477us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= cent_EnvincioLlcMember
Intangible assets       12,306us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= cent_EnvincioLlcMember
Current liabilities       (1,170)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities
/ us-gaap_BusinessAcquisitionAxis
= cent_EnvincioLlcMember
Net assets acquired, less cash and cash equivalents       $ 20,283us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest
/ us-gaap_BusinessAcquisitionAxis
= cent_EnvincioLlcMember