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Long-Term Debt and Financing Liabilities (Senior Secured Credit Facility) (Details) (USD $)
In Millions, unless otherwise specified
0 Months Ended 12 Months Ended
Dec. 11, 2013
Jul. 22, 2010
Dec. 29, 2013
Dec. 28, 2014
Senior Secured Notes        
Debt Instrument [Line Items]        
Extinguishment of debt, amount $ 55.6us-gaap_ExtinguishmentOfDebtAmount
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember
     
Unamortized fees and expenses 0.4us-gaap_WriteOffOfDeferredDebtIssuanceCost
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember
     
Revolving Credit Facility | Two Thousand Thirteen (2013) Senior Secured Credit Facility        
Debt Instrument [Line Items]        
Current borrowing capacity 200.0us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= ckp_TwoThousandThirteen2013TwoHundredMillionVariableInterestRateRevolvingFacilityMaturingin2018Member
     
Debt term 5 years      
Potential additional borrowing capacity 100.0ckp_LineofCreditFacilityPotentialAdditionalBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= ckp_TwoThousandThirteen2013TwoHundredMillionVariableInterestRateRevolvingFacilityMaturingin2018Member
     
Maximum borrowing availability under credit facility 300.0us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= ckp_TwoThousandThirteen2013TwoHundredMillionVariableInterestRateRevolvingFacilityMaturingin2018Member
     
Property pledged as collateral (less than $5 million) 5ckp_DebtInstrumentPropertyPledgedasCollateralAmount
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= ckp_TwoThousandThirteen2013TwoHundredMillionVariableInterestRateRevolvingFacilityMaturingin2018Member
     
Maximum leverage ratio 3.00ckp_LeverageRatio
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= ckp_TwoThousandThirteen2013TwoHundredMillionVariableInterestRateRevolvingFacilityMaturingin2018Member
     
Minimum interest coverage ratio 3.00ckp_FixedChargeCoverageRatio
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= ckp_TwoThousandThirteen2013TwoHundredMillionVariableInterestRateRevolvingFacilityMaturingin2018Member
     
Unamortized debt issuance expense       1.8us-gaap_UnamortizedDebtIssuanceExpense
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= ckp_TwoThousandThirteen2013TwoHundredMillionVariableInterestRateRevolvingFacilityMaturingin2018Member
Revolving Credit Facility | Two Thousand Thirteen (2013) Senior Secured Credit Facility | Maximum        
Debt Instrument [Line Items]        
Unused line fees 0.40%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= ckp_TwoThousandThirteen2013TwoHundredMillionVariableInterestRateRevolvingFacilityMaturingin2018Member
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
     
Revolving Credit Facility | $125 Million Variable Interest Rate Revolving Credit Facility Maturing In 2014        
Debt Instrument [Line Items]        
Current borrowing capacity   125.0us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= ckp_OneHundredTwentyFiveMillionDollarVariableInterestRateRevolvingCreditFacilityMaturingInTwoThousandFourteenMember
   
Debt term   4 years    
Extinguishment of debt, amount 32.0us-gaap_ExtinguishmentOfDebtAmount
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= ckp_OneHundredTwentyFiveMillionDollarVariableInterestRateRevolvingCreditFacilityMaturingInTwoThousandFourteenMember
     
Unamortized debt issuance expense       0.4us-gaap_UnamortizedDebtIssuanceExpense
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= ckp_OneHundredTwentyFiveMillionDollarVariableInterestRateRevolvingCreditFacilityMaturingInTwoThousandFourteenMember
Unamortized fees and expenses 0.3us-gaap_WriteOffOfDeferredDebtIssuanceCost
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= ckp_OneHundredTwentyFiveMillionDollarVariableInterestRateRevolvingCreditFacilityMaturingInTwoThousandFourteenMember
     
Revolving Credit Facility | Common Stock | Domestic Subsidiary | Two Thousand Thirteen (2013) Senior Secured Credit Facility        
Debt Instrument [Line Items]        
Debt instrument, collateral, percentage 100.00%ckp_DebtInstrumentCollateralAmountPercent
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= ckp_TwoThousandThirteen2013TwoHundredMillionVariableInterestRateRevolvingFacilityMaturingin2018Member
/ dei_LegalEntityAxis
= ckp_DomesticSubsidiaryMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonStockMember
     
Revolving Credit Facility | Common Stock | Foreign Subsidiary | Two Thousand Thirteen (2013) Senior Secured Credit Facility        
Debt Instrument [Line Items]        
Debt instrument, collateral, percentage 65.00%ckp_DebtInstrumentCollateralAmountPercent
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= ckp_TwoThousandThirteen2013TwoHundredMillionVariableInterestRateRevolvingFacilityMaturingin2018Member
/ dei_LegalEntityAxis
= ckp_ForeignSubsidiaryMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonStockMember
     
Bridge Loan | Two Thousand Thirteen (2013) Senior Secured Credit Facility | Minimum        
Debt Instrument [Line Items]        
Unused line fees 0.20%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
/ us-gaap_CreditFacilityAxis
= us-gaap_BridgeLoanMember
/ us-gaap_DebtInstrumentAxis
= ckp_TwoThousandThirteen2013TwoHundredMillionVariableInterestRateRevolvingFacilityMaturingin2018Member
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
     
Letter of Credit | Two Thousand Thirteen (2013) Senior Secured Credit Facility        
Debt Instrument [Line Items]        
Amount outstanding under credit facility       $ 1.4us-gaap_LineOfCredit
/ us-gaap_CreditFacilityAxis
= us-gaap_LetterOfCreditMember
/ us-gaap_DebtInstrumentAxis
= ckp_TwoThousandThirteen2013TwoHundredMillionVariableInterestRateRevolvingFacilityMaturingin2018Member
Base Rate [Member] | Revolving Credit Facility | Two Thousand Thirteen (2013) Senior Secured Credit Facility | Minimum        
Debt Instrument [Line Items]        
Spread over interest rate     0.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= ckp_TwoThousandThirteen2013TwoHundredMillionVariableInterestRateRevolvingFacilityMaturingin2018Member
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_VariableRateAxis
= us-gaap_BaseRateMember
 
Base Rate [Member] | Revolving Credit Facility | Two Thousand Thirteen (2013) Senior Secured Credit Facility | Maximum        
Debt Instrument [Line Items]        
Spread over interest rate     1.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
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/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_VariableRateAxis
= us-gaap_BaseRateMember
 
Base Rate [Member] | Bridge Loan | Two Thousand Thirteen (2013) Senior Secured Credit Facility | Minimum        
Debt Instrument [Line Items]        
Spread over interest rate     0.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= us-gaap_BridgeLoanMember
/ us-gaap_DebtInstrumentAxis
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/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_VariableRateAxis
= us-gaap_BaseRateMember
 
Base Rate [Member] | Bridge Loan | Two Thousand Thirteen (2013) Senior Secured Credit Facility | Maximum        
Debt Instrument [Line Items]        
Spread over interest rate     1.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= us-gaap_BridgeLoanMember
/ us-gaap_DebtInstrumentAxis
= ckp_TwoThousandThirteen2013TwoHundredMillionVariableInterestRateRevolvingFacilityMaturingin2018Member
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_VariableRateAxis
= us-gaap_BaseRateMember
 
London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility | Two Thousand Thirteen (2013) Senior Secured Credit Facility        
Debt Instrument [Line Items]        
Basis spread on base rate 1.00%ckp_DebtInstrumentBasisSpreadonBaseRate
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= ckp_TwoThousandThirteen2013TwoHundredMillionVariableInterestRateRevolvingFacilityMaturingin2018Member
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
     
London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility | Two Thousand Thirteen (2013) Senior Secured Credit Facility | Minimum        
Debt Instrument [Line Items]        
Spread over interest rate     1.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
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/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
 
London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility | Two Thousand Thirteen (2013) Senior Secured Credit Facility | Maximum        
Debt Instrument [Line Items]        
Spread over interest rate     2.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
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/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
 
Federal Funds Rate [Member] | Revolving Credit Facility | Two Thousand Thirteen (2013) Senior Secured Credit Facility        
Debt Instrument [Line Items]        
Basis spread on base rate 0.50%ckp_DebtInstrumentBasisSpreadonBaseRate
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
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/ us-gaap_VariableRateAxis
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