3.7.0.1 html 138 333 1 false 41 0 false 5 false false R1.htm 00000001 - Document - Document and Entity Information Sheet http://acu.com/role/DocumentAndEntityInformation Document and Entity Information Cover 1 false false R2.htm 00000002 - Statement - Consolidated Statements of Operations Sheet http://acu.com/role/StatementsOfOperations Consolidated Statements of Operations Statements 2 false false R3.htm 00000003 - Statement - Consolidated Statements of Comprehensive Income Sheet http://acu.com/role/StatementsOfComprehensiveIncome Consolidated Statements of Comprehensive Income Statements 3 false false R4.htm 00000004 - Statement - Consolidated Balance Sheets Sheet http://acu.com/role/BalanceSheets Consolidated Balance Sheets Statements 4 false false R5.htm 00000005 - Statement - Consolidated Balance Sheets (Parenthetical) Sheet http://acu.com/role/BalanceSheetsParenthetical Consolidated Balance Sheets (Parenthetical) Statements 5 false false R6.htm 00000006 - Statement - Consolidated Statements of Changes in Stockholders' Equity Sheet http://acu.com/role/StatementsOfChangesInStockholdersEquity Consolidated Statements of Changes in Stockholders' Equity Statements 6 false false R7.htm 00000007 - Statement - Consolidated Statements of Cash Flows Sheet http://acu.com/role/StatementsOfCashFlows Consolidated Statements of Cash Flows Statements 7 false false R8.htm 00000008 - Disclosure - Operations Sheet http://acu.com/role/Operations Operations Notes 8 false false R9.htm 00000009 - Disclosure - Accounting Policies Sheet http://acu.com/role/AccountingPolicies Accounting Policies Notes 9 false false R10.htm 00000010 - Disclosure - Inventories Sheet http://acu.com/role/Inventories Inventories Notes 10 false false R11.htm 00000011 - Disclosure - Intangible Assets and Goodwill Sheet http://acu.com/role/IntangibleAssetsAndGoodwill Intangible Assets and Goodwill Notes 11 false false R12.htm 00000012 - Disclosure - Other Accrued Liabilities Sheet http://acu.com/role/OtherAccruedLiabilities Other Accrued Liabilities Notes 12 false false R13.htm 00000013 - Disclosure - Pension and Profit Sharing Sheet http://acu.com/role/PensionAndProfitSharing Pension and Profit Sharing Notes 13 false false R14.htm 00000014 - Disclosure - Income Taxes Sheet http://acu.com/role/IncomeTaxes Income Taxes Notes 14 false false R15.htm 00000015 - Disclosure - Long-Term Debt Sheet http://acu.com/role/Long-termDebt Long-Term Debt Notes 15 false false R16.htm 00000016 - Disclosure - Commitments and Contingencies Sheet http://acu.com/role/CommitmentsAndContingencies Commitments and Contingencies Notes 16 false false R17.htm 00000017 - Disclosure - Segment Information Sheet http://acu.com/role/SegmentInformation Segment Information Notes 17 false false R18.htm 00000018 - Disclosure - Stock Option Plans Sheet http://acu.com/role/StockOptionPlans Stock Option Plans Notes 18 false false R19.htm 00000019 - Disclosure - Earnings Per Share Sheet http://acu.com/role/EarningsPerShare Earnings Per Share Notes 19 false false R20.htm 00000020 - Disclosure - Accumulated Other Comprehensive (Loss) Income Sheet http://acu.com/role/AccumulatedOtherComprehensiveLossIncome Accumulated Other Comprehensive (Loss) Income Notes 20 false false R21.htm 00000021 - Disclosure - Financial Instruments Sheet http://acu.com/role/FinancialInstruments Financial Instruments Notes 21 false false R22.htm 00000022 - Disclosure - Quarterly Data (unaudited) Sheet http://acu.com/role/QuarterlyData Quarterly Data (unaudited) Notes 22 false false R23.htm 00000023 - Disclosure - Sale of Property Sheet http://acu.com/role/SaleOfProperty Sale of Property Notes 23 false false R24.htm 00000024 - Disclosure - Business Combinations Sheet http://acu.com/role/BusinessCombinations Business Combinations Notes 24 false false R25.htm 00000025 - Disclosure - Subsequent Events Sheet http://acu.com/role/SubsequentEvents Subsequent Events Notes 25 false false R26.htm 00000026 - Disclosure - Accounting Policies (Policies) Sheet http://acu.com/role/AccountingPoliciesPolicies Accounting Policies (Policies) Policies http://acu.com/role/AccountingPolicies 26 false false R27.htm 00000027 - Disclosure - Inventories (Tables) Sheet http://acu.com/role/InventoriesTables Inventories (Tables) Tables http://acu.com/role/Inventories 27 false false R28.htm 00000028 - Disclosure - Intangible Assets and Goodwill (Tables) Sheet http://acu.com/role/IntangibleAssetsAndGoodwillTables Intangible Assets and Goodwill (Tables) Tables http://acu.com/role/IntangibleAssetsAndGoodwill 28 false false R29.htm 00000029 - Disclosure - Other Accrued Liabilities (Tables) Sheet http://acu.com/role/OtherAccruedLiabilitiesTables Other Accrued Liabilities (Tables) Tables http://acu.com/role/OtherAccruedLiabilities 29 false false R30.htm 00000030 - Disclosure - Pension and Profit Sharing (Tables) Sheet http://acu.com/role/PensionAndProfitSharingTables Pension and Profit Sharing (Tables) Tables http://acu.com/role/PensionAndProfitSharing 30 false false R31.htm 00000031 - Disclosure - Income Taxes (Tables) Sheet http://acu.com/role/IncomeTaxesTables Income Taxes (Tables) Tables http://acu.com/role/IncomeTaxes 31 false false R32.htm 00000032 - Disclosure - Segment Information (Tables) Sheet http://acu.com/role/SegmentInformationTables Segment Information (Tables) Tables http://acu.com/role/SegmentInformation 32 false false R33.htm 00000033 - Disclosure - Stock Option Plans (Tables) Sheet http://acu.com/role/StockOptionPlansTables Stock Option Plans (Tables) Tables http://acu.com/role/StockOptionPlans 33 false false R34.htm 00000034 - Disclosure - Earnings Per Share (Tables) Sheet http://acu.com/role/EarningsPerShareTables Earnings Per Share (Tables) Tables http://acu.com/role/EarningsPerShare 34 false false R35.htm 00000035 - Disclosure - Accumulated Other Comprehensive (Loss) Income (Tables) Sheet http://acu.com/role/AccumulatedOtherComprehensiveLossIncomeTables Accumulated Other Comprehensive (Loss) Income (Tables) Tables http://acu.com/role/AccumulatedOtherComprehensiveLossIncome 35 false false R36.htm 00000036 - Disclosure - Quarterly Data (Tables) Sheet http://acu.com/role/QuarterlyDataTables Quarterly Data (Tables) Tables http://acu.com/role/QuarterlyData 36 false false R37.htm 00000037 - Disclosure - Sale of Property (Tables) Sheet http://acu.com/role/SaleOfPropertyTables Sale of Property (Tables) Tables http://acu.com/role/SaleOfProperty 37 false false R38.htm 00000038 - Disclosure - Business Combinations - Business Combinations (Tables) Sheet http://acu.com/role/BusinessCombinations-BusinessCombinationsTables Business Combinations - Business Combinations (Tables) Tables 38 false false R39.htm 00000039 - Disclosure - Accounting Policies - Accounting Policies (Detail Narrative) Sheet http://acu.com/role/AccountingPolicies-AccountingPoliciesDetailNarrative Accounting Policies - Accounting Policies (Detail Narrative) Details 39 false false R40.htm 00000040 - Disclosure - Inventories (Details Narrative) Sheet http://acu.com/role/InventoriesDetailsNarrative Inventories (Details Narrative) Details http://acu.com/role/InventoriesTables 40 false false R41.htm 00000041 - Disclosure - Inventories - Inventories (Details) Sheet http://acu.com/role/Inventories-InventoriesDetails Inventories - Inventories (Details) Details 41 false false R42.htm 00000042 - Disclosure - Intangible Assets and Goodwill (Details Narrative) Sheet http://acu.com/role/IntangibleAssetsAndGoodwillDetailsNarrative Intangible Assets and Goodwill (Details Narrative) Details http://acu.com/role/IntangibleAssetsAndGoodwillTables 42 false false R43.htm 00000043 - Disclosure - Intangible Assets and Goodwill - Intangible Assets (Details) Sheet http://acu.com/role/IntangibleAssetsAndGoodwill-IntangibleAssetsDetails Intangible Assets and Goodwill - Intangible Assets (Details) Details 43 false false R44.htm 00000044 - Disclosure - Other Accrued Liabilities (Details) Sheet http://acu.com/role/OtherAccruedLiabilitiesDetails Other Accrued Liabilities (Details) Details http://acu.com/role/OtherAccruedLiabilitiesTables 44 false false R45.htm 00000045 - Disclosure - Pension and Profit Sharing - Plan Asset Allocation (Details) Sheet http://acu.com/role/PensionAndProfitSharing-PlanAssetAllocationDetails Pension and Profit Sharing - Plan Asset Allocation (Details) Details 45 false false R46.htm 00000046 - Disclosure - Pension and Profit Sharing - Pension Plan Assets by Fair Value Hiearchy (Details) Sheet http://acu.com/role/PensionAndProfitSharing-PensionPlanAssetsByFairValueHiearchyDetails Pension and Profit Sharing - Pension Plan Assets by Fair Value Hiearchy (Details) Details 46 false false R47.htm 00000047 - Disclosure - Pension and Profit Sharing - Benefit Obligation (Details) Sheet http://acu.com/role/PensionAndProfitSharing-BenefitObligationDetails Pension and Profit Sharing - Benefit Obligation (Details) Details 47 false false R48.htm 00000048 - Disclosure - Pension And Profit Sharing - Changes In Plan Assets (Details) Sheet http://acu.com/role/PensionAndProfitSharing-ChangesInPlanAssetsDetails Pension And Profit Sharing - Changes In Plan Assets (Details) Details 48 false false R49.htm 00000049 - Disclosure - Pension and Profit Sharing - Periodic Benefit Cost (Details) Sheet http://acu.com/role/PensionAndProfitSharing-PeriodicBenefitCostDetails Pension and Profit Sharing - Periodic Benefit Cost (Details) Details 49 false false R50.htm 00000050 - Disclosure - Pension and Profit Sharing - Amounts Recognized in Other Comprehensive Income (Details) Sheet http://acu.com/role/PensionAndProfitSharing-AmountsRecognizedInOtherComprehensiveIncomeDetails Pension and Profit Sharing - Amounts Recognized in Other Comprehensive Income (Details) Details 50 false false R51.htm 00000051 - Disclosure - Pension and Profit Sharing - Estimated Future Benefit Payments (Details) Sheet http://acu.com/role/PensionAndProfitSharing-EstimatedFutureBenefitPaymentsDetails Pension and Profit Sharing - Estimated Future Benefit Payments (Details) Details 51 false false R52.htm 00000052 - Disclosure - Pension and Profit Sharing (Details Narrative) Sheet http://acu.com/role/PensionAndProfitSharingDetailsNarrative Pension and Profit Sharing (Details Narrative) Details http://acu.com/role/PensionAndProfitSharingTables 52 false false R53.htm 00000053 - Disclosure - Income Taxes (Details Narrative) Sheet http://acu.com/role/IncomeTaxesDetailsNarrative Income Taxes (Details Narrative) Details http://acu.com/role/IncomeTaxesTables 53 false false R54.htm 00000054 - Disclosure - Income Taxes - Income Tax Expense (Benefit) (Details) Sheet http://acu.com/role/IncomeTaxes-IncomeTaxExpenseBenefitDetails Income Taxes - Income Tax Expense (Benefit) (Details) Details 54 false false R55.htm 00000055 - Disclosure - Income Taxes - US and Foreign Income Before Income Taxes (Details) Sheet http://acu.com/role/IncomeTaxes-UsAndForeignIncomeBeforeIncomeTaxesDetails Income Taxes - US and Foreign Income Before Income Taxes (Details) Details 55 false false R56.htm 00000056 - Disclosure - Income Taxes - US Statutory Rate Reconciliation (Details) Sheet http://acu.com/role/IncomeTaxes-UsStatutoryRateReconciliationDetails Income Taxes - US Statutory Rate Reconciliation (Details) Details 56 false false R57.htm 00000057 - Disclosure - Income Taxes - Deferred Tax Assets and Liabilities (Details) Sheet http://acu.com/role/IncomeTaxes-DeferredTaxAssetsAndLiabilitiesDetails Income Taxes - Deferred Tax Assets and Liabilities (Details) Details 57 false false R58.htm 00000058 - Disclosure - Long-Term Debt (Details Narrative) Sheet http://acu.com/role/Long-termDebtDetailsNarrative Long-Term Debt (Details Narrative) Details http://acu.com/role/Long-termDebt 58 false false R59.htm 00000059 - Disclosure - Commitments and Contingencies (Details Narrative) Sheet http://acu.com/role/CommitmentsAndContingenciesDetailsNarrative Commitments and Contingencies (Details Narrative) Details http://acu.com/role/CommitmentsAndContingencies 59 false false R60.htm 00000060 - Disclosure - Segment Information (Details Narrative) Sheet http://acu.com/role/SegmentInformationDetailsNarrative Segment Information (Details Narrative) Details http://acu.com/role/SegmentInformationTables 60 false false R61.htm 00000061 - Disclosure - Segment Information - Financial Data by Segment (Details) Sheet http://acu.com/role/SegmentInformation-FinancialDataBySegmentDetails Segment Information - Financial Data by Segment (Details) Details 61 false false R62.htm 00000062 - Disclosure - Reconciliation of Segment Operating Income (Details) Sheet http://acu.com/role/ReconciliationOfSegmentOperatingIncomeDetails Reconciliation of Segment Operating Income (Details) Details 62 false false R63.htm 00000063 - Disclosure - Segment Revenues (Details) Sheet http://acu.com/role/SegmentRevenuesDetails Segment Revenues (Details) Details 63 false false R64.htm 00000064 - Disclosure - Stock Option Plans (Details Narrative) Sheet http://acu.com/role/StockOptionPlansDetailsNarrative Stock Option Plans (Details Narrative) Details http://acu.com/role/StockOptionPlansTables 64 false false R65.htm 00000065 - Disclosure - Stock Option Plans - Stock Option Activity (Details) Sheet http://acu.com/role/StockOptionPlans-StockOptionActivityDetails Stock Option Plans - Stock Option Activity (Details) Details 65 false false R66.htm 00000066 - Disclosure - Stock Option Plans - Summary of Options Outstanding (Details) Sheet http://acu.com/role/StockOptionPlans-SummaryOfOptionsOutstandingDetails Stock Option Plans - Summary of Options Outstanding (Details) Details 66 false false R67.htm 00000067 - Disclosure - Stock Option Plans - Assumptions Used to Value Option Grants (Details) Sheet http://acu.com/role/StockOptionPlans-AssumptionsUsedToValueOptionGrantsDetails Stock Option Plans - Assumptions Used to Value Option Grants (Details) Details 67 false false R68.htm 00000068 - Disclosure - Earnings Per Share (Details Narrative) Sheet http://acu.com/role/EarningsPerShareDetailsNarrative Earnings Per Share (Details Narrative) Details http://acu.com/role/EarningsPerShareTables 68 false false R69.htm 00000069 - Disclosure - Earnings Per Share - Earnings Per Share (Details) Sheet http://acu.com/role/EarningsPerShare-EarningsPerShareDetails Earnings Per Share - Earnings Per Share (Details) Details 69 false false R70.htm 00000070 - Disclosure - Comprehensive Income - Accumulated Other Comprehensive (Loss) Income (Details) Sheet http://acu.com/role/ComprehensiveIncome-AccumulatedOtherComprehensiveLossIncomeDetails Comprehensive Income - Accumulated Other Comprehensive (Loss) Income (Details) Details 70 false false R71.htm 00000071 - Disclosure - Quarterly Data - Quarterly Data (Details) Sheet http://acu.com/role/QuarterlyData-QuarterlyDataDetails Quarterly Data - Quarterly Data (Details) Details 71 false false R72.htm 00000072 - Disclosure - Sale of Property (Details Narrative) Sheet http://acu.com/role/SaleOfPropertyDetailsNarrative Sale of Property (Details Narrative) Details http://acu.com/role/SaleOfPropertyTables 72 false false R73.htm 00000073 - Disclosure - Sale of Property - Accrual for Environmental Remediation (Details) Sheet http://acu.com/role/SaleOfProperty-AccrualForEnvironmentalRemediationDetails Sale of Property - Accrual for Environmental Remediation (Details) Details 73 false false R74.htm 00000074 - Disclosure - Business Combinations (Details Narrative) Sheet http://acu.com/role/BusinessCombinationsDetailsNarrative Business Combinations (Details Narrative) Details http://acu.com/role/BusinessCombinations-BusinessCombinationsTables 74 false false R75.htm 00000075 - Disclosure - Business Combinations Purchase Price Allocation (Details) Sheet http://acu.com/role/BusinessCombinationsPurchasePriceAllocationDetails Business Combinations Purchase Price Allocation (Details) Details 75 false false R76.htm 00000076 - Disclosure - Subsequent Events (Details Narrative) Sheet http://acu.com/role/SubsequentEventsDetailsNarrative Subsequent Events (Details Narrative) Details http://acu.com/role/SubsequentEvents 76 false false All Reports Book All Reports acu-20161231.xml acu-20161231.xsd acu-20161231_cal.xml acu-20161231_def.xml acu-20161231_lab.xml acu-20161231_pre.xml true true