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Goodwill And Other Intangible Assets (Narrative) (Details) (USD $)
3 Months Ended
Mar. 29, 2015
Mar. 30, 2014
Dec. 28, 2014
May 31, 2011
Business Acquisition [Line Items]        
Intangible assets, net $ 60,980,000us-gaap_OtherIntangibleAssetsNet   $ 64,940,000us-gaap_OtherIntangibleAssetsNet  
Amortization expense 2,700,000us-gaap_AmortizationOfIntangibleAssets 2,900,000us-gaap_AmortizationOfIntangibleAssets    
Cash payment to escrow       17,500,000us-gaap_BusinessCombinationContingentConsiderationLiability
Acquisition costs 79,000us-gaap_BusinessCombinationAcquisitionRelatedCosts 0us-gaap_BusinessCombinationAcquisitionRelatedCosts    
Two Thousand Ten Performance        
Business Acquisition [Line Items]        
Additional purchase price contingent on performance of acquired businesses       $ 6,300,000us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh
/ ckp_BusinessAcquisitionPerformancePlanAxis
= ckp_TwoThousandTenPerformanceMember