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Debt (Senior Secured Credit Facility) (Details) (2013 $200 Million Variable Interest Rate Revolving Facility Maturing in 2018, USD $)
 0 Months Ended
Dec. 11, 2013
Mar. 29, 2015
Revolving Credit Facility    
Debt Instrument [Line Items]    
Borrowing capacity $ 200,000,000us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= ckp_TwoThousandThirteen2013TwoHundredMillionVariableInterestRateRevolvingFacilityMaturingin2018Member		  
Debt instrument, property pledged as collateral, amount 5,000,000ckp_DebtInstrumentPropertyPledgedasCollateralAmount
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= ckp_TwoThousandThirteen2013TwoHundredMillionVariableInterestRateRevolvingFacilityMaturingin2018Member		  
Leverage ratio 3.00ckp_LeverageRatio
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= ckp_TwoThousandThirteen2013TwoHundredMillionVariableInterestRateRevolvingFacilityMaturingin2018Member		  
Fixed charge coverage ratio 3.00ckp_FixedChargeCoverageRatio
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= ckp_TwoThousandThirteen2013TwoHundredMillionVariableInterestRateRevolvingFacilityMaturingin2018Member		  
Revolving Credit Facility | Minimum | Senior Secured Credit Facility    
Debt Instrument [Line Items]    
Line of credit facility, unused capacity, commitment fee percentage 0.20%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= ckp_TwoThousandThirteen2013TwoHundredMillionVariableInterestRateRevolvingFacilityMaturingin2018Member
/ us-gaap_LineOfCreditFacilityAxis
= ckp_SeniorSecuredCreditFacilityMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		  
Revolving Credit Facility | Maximum | Senior Secured Credit Facility    
Debt Instrument [Line Items]    
Line of credit facility, unused capacity, commitment fee percentage 0.40%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= ckp_TwoThousandThirteen2013TwoHundredMillionVariableInterestRateRevolvingFacilityMaturingin2018Member
/ us-gaap_LineOfCreditFacilityAxis
= ckp_SeniorSecuredCreditFacilityMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		  
Revolving Credit Facility | Base Rate | Minimum    
Debt Instrument [Line Items]    
Debt instrument, basis spread on variable 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		  
Revolving Credit Facility | Base Rate | Maximum    
Debt Instrument [Line Items]    
Debt instrument, basis spread on variable rate 1.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= ckp_TwoThousandThirteen2013TwoHundredMillionVariableInterestRateRevolvingFacilityMaturingin2018Member
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_VariableRateAxis
= us-gaap_BaseRateMember		  
Revolving Credit Facility | London Interbank Offered Rate (LIBOR)    
Debt Instrument [Line Items]    
Debt instrument, 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		  
Revolving Credit Facility | London Interbank Offered Rate (LIBOR) | Minimum    
Debt Instrument [Line Items]    
Debt instrument, basis spread on variable rate 1.25%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_LondonInterbankOfferedRateLIBORMember		  
Revolving Credit Facility | London Interbank Offered Rate (LIBOR) | Maximum    
Debt Instrument [Line Items]    
Debt instrument, basis spread on variable rate 2.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= ckp_TwoThousandThirteen2013TwoHundredMillionVariableInterestRateRevolvingFacilityMaturingin2018Member
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember		  
Revolving Credit Facility | Federal Funds Rate    
Debt Instrument [Line Items]    
Debt instrument, basis spread on base rate 0.50%ckp_DebtInstrumentBasisSpreadonBaseRate
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
/ us-gaap_DebtInstrumentAxis
= ckp_TwoThousandThirteen2013TwoHundredMillionVariableInterestRateRevolvingFacilityMaturingin2018Member
/ us-gaap_VariableRateAxis
= ckp_FederalFundsRateMember		  
Revolving Credit Facility | Domestic Subsidiary | Common Stock    
Debt Instrument [Line Items]    
Debt instrument, collateral amount, percent 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 | Foreign Subsidiary | Common Stock    
Debt Instrument [Line Items]    
Debt instrument, collateral amount, percent 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 | Base Rate | Minimum    
Debt Instrument [Line Items]    
Debt instrument, basis spread on variable rate 0.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_CreditFacilityAxis
= us-gaap_BridgeLoanMember
/ us-gaap_DebtInstrumentAxis
= ckp_TwoThousandThirteen2013TwoHundredMillionVariableInterestRateRevolvingFacilityMaturingin2018Member
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_VariableRateAxis
= us-gaap_BaseRateMember		  
Bridge Loan | Base Rate | Maximum    
Debt Instrument [Line Items]    
Debt instrument, basis spread on variable 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		  
Letter of Credit    
Debt Instrument [Line Items]    
Amount outstanding under credit facility   $ 1,400,000us-gaap_LineOfCredit
/ us-gaap_CreditFacilityAxis
= us-gaap_LetterOfCreditMember
/ us-gaap_DebtInstrumentAxis
= ckp_TwoThousandThirteen2013TwoHundredMillionVariableInterestRateRevolvingFacilityMaturingin2018Member