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STOCK-BASED COMPENSATION (Details 3) (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
Defined Contribution Plan |  |
Matching percentage per dollar of the first 3% of participant deferral | 100.00%amot_DefinedContributionPlanEmployerMatchingContributionPercentOfMatchPerDollarOfFirstSpecifiedPercentageOfParticipantDeferral | 100.00%amot_DefinedContributionPlanEmployerMatchingContributionPercentOfMatchPerDollarOfFirstSpecifiedPercentageOfParticipantDeferral
First specified percentage of participant deferral upon which employer matches 100% contribution per dollar | 3.00%amot_DefinedContributionPlanEmployerMatchingContributionPercentOfMatchFirstSpecifiedPercentageOfParticipantDeferral | 3.00%amot_DefinedContributionPlanEmployerMatchingContributionPercentOfMatchFirstSpecifiedPercentageOfParticipantDeferral
Matching percentage per dollar of the next 2% contribution | 50.00%amot_DefinedContributionPlanEmployerMatchingContributionPercentOfMatchPerDollarOfNextSpecifiedPercentageOfEmployeeContribution | 50.00%amot_DefinedContributionPlanEmployerMatchingContributionPercentOfMatchPerDollarOfNextSpecifiedPercentageOfEmployeeContribution
Next specified percentage of employee contribution upon which employer matches 50% contribution per dollar | 2.00%amot_DefinedContributionPlanEmployerMatchingContributionPercentOfMatchNextSpecifiedPercentageOfEmployeeContribution | 2.00%amot_DefinedContributionPlanEmployerMatchingContributionPercentOfMatchNextSpecifiedPercentageOfEmployeeContribution
Participant deferral (as a percent) | 5.00%us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent | 5.00%us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
Net costs related to defined contribution plan | $ 1,036 us-gaap_DefinedContributionPlanCostRecognized | $ 506 us-gaap_DefinedContributionPlanCostRecognized
Dividends |  |
Dividends paid (in dollars per share) | $ 0.10 us-gaap_CommonStockDividendsPerShareCashPaid | $ 0.10 us-gaap_CommonStockDividendsPerShareCashPaid
Total dividends paid | $ 963 us-gaap_PaymentsOfDividends | $ 873 us-gaap_PaymentsOfDividends
Maximum |  |
Defined Contribution Plan |  |
Specified percentage of employee contribution upon which employer matches contribution | 4.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch / us-gaap_RangeAxis = us-gaap_MaximumMember | 4.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch / us-gaap_RangeAxis = us-gaap_MaximumMember

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- Definition Represents the first specified percentage of participant deferral upon which employer matches contribution. + References No definition available. + Details
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- Definition Represents the next specified percentage of employee contribution upon which employer matches contribution. + References No definition available. + Details
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- Definition Represents the percentage employer matches the employee's first specified percentage contribution matched. + References No definition available. + Details
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- Definition Represents the percentage employer matches the employee's next specified percentage contribution matched. + References No definition available. + Details
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- Definition Aggregate dividends paid during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Definition The amount of the cost recognized during the period for defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414718&loc=d3e28014-114942 + Details
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- Definition Percentage employer matches of the employee's percentage contribution matched. + References No definition available. + Details
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- Definition Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan. + References No definition available. + Details
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- Definition Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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