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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Details) (USD $) | Mar. 31, 2015 | Dec. 31, 2014
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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES |  |
Aggregate amount of forward exchange contracts outstanding | $ 152,800,000 invest_DerivativeNotionalAmount |
Fair Value of Derivative Instruments |  |
Derivative Assets | 7,443,000 us-gaap_DerivativeFairValueOfDerivativeAsset | 1,044,000 us-gaap_DerivativeFairValueOfDerivativeAsset
Derivative Liabilities | 4,601,000 us-gaap_DerivativeFairValueOfDerivativeLiability | 2,493,000 us-gaap_DerivativeFairValueOfDerivativeLiability
Derivative Contracts Not Designated as Hedging Instruments |  |
Fair Value of Derivative Instruments |  |
Derivative Assets | 7,443,000 us-gaap_DerivativeFairValueOfDerivativeAsset / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember | 1,044,000 us-gaap_DerivativeFairValueOfDerivativeAsset / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember
Derivative Liabilities | 4,601,000 us-gaap_DerivativeFairValueOfDerivativeLiability / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember | 2,493,000 us-gaap_DerivativeFairValueOfDerivativeLiability / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember
Derivative Contracts Not Designated as Hedging Instruments | Foreign Exchange Contracts | Prepaid and other |  |
Fair Value of Derivative Instruments |  |
Derivative Assets | 7,443,000 us-gaap_DerivativeFairValueOfDerivativeAsset / us-gaap_BalanceSheetLocationAxis = us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForeignExchangeContractMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember | 1,037,000 us-gaap_DerivativeFairValueOfDerivativeAsset / us-gaap_BalanceSheetLocationAxis = us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForeignExchangeContractMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember
Derivative Contracts Not Designated as Hedging Instruments | Foreign Exchange Contracts | Miscellaneous Other Assets |  |
Fair Value of Derivative Instruments |  |
Derivative Assets |  | 7,000 us-gaap_DerivativeFairValueOfDerivativeAsset / us-gaap_BalanceSheetLocationAxis = atr_MiscellaneousOtherAssetsMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForeignExchangeContractMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember
Derivative Contracts Not Designated as Hedging Instruments | Foreign Exchange Contracts | Accounts payable and accrued liabilities |  |
Fair Value of Derivative Instruments |  |
Derivative Liabilities | 4,449,000 us-gaap_DerivativeFairValueOfDerivativeLiability / us-gaap_BalanceSheetLocationAxis = us-gaap_AccountsPayableAndAccruedLiabilitiesMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForeignExchangeContractMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember | 2,378,000 us-gaap_DerivativeFairValueOfDerivativeLiability / us-gaap_BalanceSheetLocationAxis = us-gaap_AccountsPayableAndAccruedLiabilitiesMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForeignExchangeContractMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember
Derivative Contracts Not Designated as Hedging Instruments | Foreign Exchange Contracts | Deferred and other non-current liabilities |  |
Fair Value of Derivative Instruments |  |
Derivative Liabilities | $ 152,000 us-gaap_DerivativeFairValueOfDerivativeLiability / us-gaap_BalanceSheetLocationAxis = atr_DeferredAndOtherNonCurrentLiabilitiesMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForeignExchangeContractMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember | $ 115,000 us-gaap_DerivativeFairValueOfDerivativeLiability / us-gaap_BalanceSheetLocationAxis = atr_DeferredAndOtherNonCurrentLiabilitiesMember / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForeignExchangeContractMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember

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