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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 3) (USD $) | 12 Months Ended
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Dec. 31, 2014 item | Dec. 31, 2013 | Dec. 31, 2012
Goodwill |  |  |
Number of reportable units | 4atr_NumberOfReportableUnits |  |
Impairment of goodwill | $ 0us-gaap_GoodwillImpairmentLoss |  |
IMPAIRMENT OF LONG-LIVED ASSETS |  |  |
Adjustment for accelerated depreciation |  | 1,500,000atr_AdjustmentsForAcceleratedDepreciation |
RESEARCH & DEVELOPMENT EXPENSES |  |  |
Research and development expenses incurred net of customer funded research and development or government research and development credits | 76,200,000us-gaap_ResearchAndDevelopmentExpense | 71,800,000us-gaap_ResearchAndDevelopmentExpense | 65,400,000us-gaap_ResearchAndDevelopmentExpense
TRANSLATION OF FOREIGN CURRENCIES |  |  |
Realized and unrealized foreign currency transaction gain (loss) | $ (37,000)us-gaap_ForeignCurrencyTransactionGainLossBeforeTax | $ (6,300,000)us-gaap_ForeignCurrencyTransactionGainLossBeforeTax | $ (1,600,000)us-gaap_ForeignCurrencyTransactionGainLossBeforeTax
Patents, non-compete agreements and license agreements | Minimum |  |  |
FINITE-LIVED INTANGIBLE ASSETS |  |  |
Finite-Lived Intangible Asset, Useful Life | 3 years |  |
Patents, non-compete agreements and license agreements | Maximum |  |  |
FINITE-LIVED INTANGIBLE ASSETS |  |  |
Finite-Lived Intangible Asset, Useful Life | 20 years |  |

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- Definition Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450189&loc=d3e30690-110894 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450222&loc=d3e30840-110895 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6450189&loc=d3e30700-110894 + Details
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- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13854-109267 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13777-109266 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 + Details
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- Definition The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 730 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420194&loc=d3e21568-108373 + Details
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