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COMMITMENTS AND CONTINGENCIES (Details) | Dec. 31, 2015 USD ($)
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Indemnification agreements |
Commitments and contingencies |
Liabilities recorded under indemnification agreements | $ 0

X
- Definition The amount of liabilities recorded as of the balance sheet date under indemnification agreements. + References No definition available. + Details
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Namespace Prefix: | atr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_LossContingenciesByNatureOfContingencyAxis=us-gaap_IndemnificationGuaranteeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |