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Fair Value Measurements - Additional Information (Detail)
In Millions, unless otherwise specified
Apr. 04, 2015
USD ($)
Jan. 03, 2015
USD ($)
Apr. 04, 2015
Aimia Foods Holdings Limited [Member]
USD ($)
Apr. 04, 2015
Aimia Foods Holdings Limited [Member]
GBP (£)
May 31, 2014
Aimia Foods Holdings Limited [Member]
USD ($)
May 31, 2014
Aimia Foods Holdings Limited [Member]
GBP (£)
May 30, 2014
Aimia Foods Holdings Limited [Member]
GBP (£)
Apr. 04, 2015
Level 2 [Member]
USD ($)
Jan. 03, 2015
Level 2 [Member]
USD ($)
Fair Value Measurements [Line Items]                  
Fair value for the derivative assets               $ 2.2us-gaap_DerivativeAssets
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
$ 1.2us-gaap_DerivativeAssets
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
Fair value for the derivative liabilities 3.1us-gaap_DerivativeLiabilities 2.3us-gaap_DerivativeLiabilities           3.1us-gaap_DerivativeLiabilities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
2.3us-gaap_DerivativeLiabilities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
Fair Value of Contingent Consideration     15.7us-gaap_BusinessCombinationLiabilitiesArisingFromContingenciesAmountRecognized
/ us-gaap_BusinessAcquisitionAxis
= cot_AimiaFoodsHoldingsLimitedMember
10.6us-gaap_BusinessCombinationLiabilitiesArisingFromContingenciesAmountRecognized
/ us-gaap_BusinessAcquisitionAxis
= cot_AimiaFoodsHoldingsLimitedMember
17.9us-gaap_BusinessCombinationLiabilitiesArisingFromContingenciesAmountRecognized
/ us-gaap_BusinessAcquisitionAxis
= cot_AimiaFoodsHoldingsLimitedMember
       
Contingent consideration maximum payable amount     $ 23.7us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh
/ us-gaap_BusinessAcquisitionAxis
= cot_AimiaFoodsHoldingsLimitedMember
£ 16.0us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh
/ us-gaap_BusinessAcquisitionAxis
= cot_AimiaFoodsHoldingsLimitedMember
$ 23.7us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh
/ us-gaap_BusinessAcquisitionAxis
= cot_AimiaFoodsHoldingsLimitedMember
£ 16.0us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh
/ us-gaap_BusinessAcquisitionAxis
= cot_AimiaFoodsHoldingsLimitedMember
£ 16.0us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh
/ us-gaap_BusinessAcquisitionAxis
= cot_AimiaFoodsHoldingsLimitedMember