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INCOME TAXES (Details 2) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Valuation Allowance |  |  |
Valuation allowance | $ 7,734,000us-gaap_DeferredTaxAssetsValuationAllowance | $ 4,840,000us-gaap_DeferredTaxAssetsValuationAllowance |
Other income tax disclosures |  |  |
Repatriation of foreign earnings | 0us-gaap_ForeignEarningsRepatriated | 79,000,000us-gaap_ForeignEarningsRepatriated | 79,000,000us-gaap_ForeignEarningsRepatriated
Reconciliation of the beginning and ending amount of income tax uncertainties |  |  |
Balance at the beginning of period | 7,988,000us-gaap_UnrecognizedTaxBenefits | 8,464,000us-gaap_UnrecognizedTaxBenefits | 9,071,000us-gaap_UnrecognizedTaxBenefits
Increases based on tax positions for the current year | 113,000us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions | 110,000us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions | 245,000us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
Increases based on tax positions of prior years | 228,000us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions | 381,000us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions | 107,000us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
Decreases based on tax positions of prior years | (1,073,000)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions | (92,000)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions | (257,000)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
Settlements | (407,000)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities | (515,000)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities | (21,000)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities
Lapse of statute of limitations | (441,000)us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations | (360,000)us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations | (681,000)us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
Balance at the end of period | 6,408,000us-gaap_UnrecognizedTaxBenefits | 7,988,000us-gaap_UnrecognizedTaxBenefits | 8,464,000us-gaap_UnrecognizedTaxBenefits
Undistributed earnings attributable to foreign subsidiaries considered to be permanently reinvested | 1,300,000,000us-gaap_UndistributedEarningsOfForeignSubsidiaries |  |
Foreign taxes payable in the event of non-fulfillment of terms of government grants | 2,200,000atr_ContingentForeignIncomeTaxPayableOnUncertainTaxPositions |  |
Amount of income tax uncertainties that, if recognized, would impact the effective tax rate | 6,300,000us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate |  |
Decrease in liability for uncertain tax positions, high end of range | 5,000,000us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeUpperBound |  |
Number of months liability for uncertain tax positions will decrease | 12 months |  |
Unrecognized tax benefits, amount accrued for the payment of interest and penalties | 700,000us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued | 900,000us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued | 1,300,000us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
Unrecognized tax benefits, amount recognized in income tax expense | (200,000)us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense | (400,000)us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense | (100,000)us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense
Minimum |  |  |
Other income tax disclosures |  |  |
Estimated amount of additional tax if undistributed earnings are remitted as dividends or lent to a U.S. affiliate | 100,000,000us-gaap_DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityUndistributedEarningsOfForeignSubsidiaries / us-gaap_RangeAxis = us-gaap_MinimumMember |  |
Maximum |  |  |
Other income tax disclosures |  |  |
Estimated amount of additional tax if undistributed earnings are remitted as dividends or lent to a U.S. affiliate | 125,000,000us-gaap_DeferredTaxLiabilityNotRecognizedAmountOfUnrecognizedDeferredTaxLiabilityUndistributedEarningsOfForeignSubsidiaries / us-gaap_RangeAxis = us-gaap_MaximumMember |  |
Canada |  |  |
Other income tax disclosures |  |  |
Repatriation of foreign earnings |  |  | 1,300,000us-gaap_ForeignEarningsRepatriated / us-gaap_StatementGeographicalAxis = country_CA
Deferred tax assets related to non-U.S. jurisdictions |  |  |
Valuation Allowance |  |  |
Valuation allowance | 100,000us-gaap_DeferredTaxAssetsValuationAllowance / us-gaap_ValuationAllowanceByDeferredTaxAssetAxis = atr_DeferredTaxAssetsRelatedToNonUSJurisdictionsMember |  |
Deferred tax assets related to tax credit carryforwards, U.S. state |  |  |
Valuation Allowance |  |  |
Valuation allowance | 5,400,000us-gaap_DeferredTaxAssetsValuationAllowance / us-gaap_ValuationAllowanceByDeferredTaxAssetAxis = atr_DeferredTaxAssetsTaxCreditCarryforwardsStateMember |  |
Deferred tax assets for specified locations |  |  |
Valuation Allowance |  |  |
Valuation allowance | $ 2,200,000us-gaap_DeferredTaxAssetsValuationAllowance / us-gaap_ValuationAllowanceByDeferredTaxAssetAxis = atr_DeferredTaxAssetsSpecifiedLocationsMember |  |

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