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BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 3) (USD $) | 0 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 31, 2014 | Dec. 31, 2014 item | Dec. 31, 2013 item | Dec. 31, 2012
BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES |  |  |  |
Number of reporting units |  | 1 amot_NumberOfReportingUnit |  |
Goodwill impairment | $ 0 us-gaap_GoodwillImpairmentLoss |  |  |
Changes in the reserve for product warranty claims |  |  |  |
Warranty reserve at beginning of the year |  | 629,000 us-gaap_ProductWarrantyAccrualClassifiedCurrent | 551,000 us-gaap_ProductWarrantyAccrualClassifiedCurrent |
Warranty reserves acquired |  |  | 429,000 us-gaap_ProductWarrantyAccrualAdditionsFromBusinessAcquisition |
Provision |  | 234,000 us-gaap_ProductWarrantyAccrualWarrantiesIssued | 175,000 us-gaap_ProductWarrantyAccrualWarrantiesIssued |
Warranty expenditures |  | (40,000)us-gaap_ProductWarrantyAccrualPayments | (529,000)us-gaap_ProductWarrantyAccrualPayments |
Effect of foreign currency translation |  | (37,000)us-gaap_ProductWarrantyAccrualCurrencyTranslationIncreaseDecrease | 3,000 us-gaap_ProductWarrantyAccrualCurrencyTranslationIncreaseDecrease |
Warranty reserve at end of year |  | 786,000 us-gaap_ProductWarrantyAccrualClassifiedCurrent | 629,000 us-gaap_ProductWarrantyAccrualClassifiedCurrent | 551,000 us-gaap_ProductWarrantyAccrualClassifiedCurrent
Expected costs of replacing certain products in the field due to an incorrect electronic component in a printed circuit board |  |  |  | 342,000 amot_ProductWarrantyAccrualWarrantiesIssuedToReplaceProductsDueToIncorrectElectronicComponent
Number of Company's sub-contract suppliers who supplied an incorrect electronic component |  |  | 1 amot_NumberOfSubContractSuppliersProvidedIncorrectElectronicComponent |
Additional provision recorded to replace certain products in the field due to an incorrect electronic component in a printed circuit board |  |  | 44,000 amot_ProductWarrantyAccrualAdditionalWarrantiesIssuedToReplaceProductsDueToIncorrectElectronicComponent |
Warranty expenditures incurred related to replacing certain products in the field due to an incorrect electronic component in a printed circuit board |  |  | 367,000 amot_ProductWarrantyAccrualPaymentsToReplaceProductsDueToIncorrectElectronicComponent |
Reserve, net of the effect of foreign currency translation related to replacing certain products in the field due to an incorrect electronic component in a printed circuit board |  | 0 amot_ProductWarrantyAccrualToReplaceProductsDueToIncorrectElectronicComponent | 30,000 amot_ProductWarrantyAccrualToReplaceProductsDueToIncorrectElectronicComponent |
Accrued Liabilities |  |  |  |
Compensation and fringe benefits |  | 9,696,000 us-gaap_EmployeeRelatedLiabilitiesCurrent | 6,721,000 us-gaap_EmployeeRelatedLiabilitiesCurrent |
Warranty reserve |  | 786,000 us-gaap_ProductWarrantyAccrualClassifiedCurrent | 629,000 us-gaap_ProductWarrantyAccrualClassifiedCurrent | 551,000 us-gaap_ProductWarrantyAccrualClassifiedCurrent
Other accrued expenses |  | 1,848,000 us-gaap_OtherAccruedLiabilitiesCurrent | 2,548,000 us-gaap_OtherAccruedLiabilitiesCurrent |
Accrued liabilities |  | $ 12,330,000 us-gaap_AccruedLiabilitiesCurrent | $ 9,898,000 us-gaap_AccruedLiabilitiesCurrent |
Basic and Diluted Income per Share from Continuing Operations |  |  |  |
Dilutive effect of outstanding stock option awards (in shares) |  | 20,000 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements | 7,000 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements |
Stock awards excluded from the calculation of diluted income per share (in shares) |  | 0 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount | 0 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount |

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