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Accounting Policies - Accounting Policies (Detail Narrative) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013
Foreign currency transaction losses during period | $ 117,347 us-gaap_ForeignCurrencyTransactionGainLossBeforeTax | $ 88,125 us-gaap_ForeignCurrencyTransactionGainLossBeforeTax
Allowance for doubtful accounts | 128,318 us-gaap_AllowanceForDoubtfulAccountsReceivable | 227,891 us-gaap_AllowanceForDoubtfulAccountsReceivable
Weighted average intangible assets amortization period | 14 years |
Research and development costs during period | 665,000 us-gaap_ResearchAndDevelopmentExpense | 602,985 us-gaap_ResearchAndDevelopmentExpense
Shipping costs during period | 4,399,364 us-gaap_ShippingHandlingAndTransportationCosts | 3,244,487 us-gaap_ShippingHandlingAndTransportationCosts
Advertising costs during period | $ 1,660,687 us-gaap_AdvertisingExpense | $ 1,484,782 us-gaap_AdvertisingExpense
Major Customer No. 1 |  |
Net sales to major customers | 14.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember | 16.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember
Major Customer No. 2 |  |
Net sales to major customers | 12.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByTypeAxis = ACU_CustomerConcentrationRiskAMember | 15.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByTypeAxis = ACU_CustomerConcentrationRiskAMember
Greater Than 10% of Total Net Receivables |  |
Number of major customers | 1 ACU_ConcentrationRiskNumberOfMajorCustomers / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember |
Exceeded 10% of Consolidated Net Sales |  |
Number of major customers | 2 ACU_ConcentrationRiskNumberOfMajorCustomers / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember | 2 ACU_ConcentrationRiskNumberOfMajorCustomers / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueGoodsNetMember
Minimum Range |  |
Asset useful life | 3 years |
Maximum Range |  |
Asset useful life | 30 years |

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