2.4.0.8073 - Disclosure - Note 13 - Employee Benefit Plans (Details) - Fair value of plan assetstruefalseIn Thousands, unless otherwise specifiedfalse1false USDfalsefalse$c0_AsOf30Jun2013http://www.sec.gov/CIK0000006314instant2013-06-30T00:00:000001-01-01T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2false USDfalsefalse$c1_AsOf30Jun2012http://www.sec.gov/CIK0000006314instant2012-06-30T00:00:000001-01-01T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3false USDfalsefalse$c21_AsOf30Jun2011http://www.sec.gov/CIK0000006314instant2011-06-30T00:00:000001-01-01T00:00:00usdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1true 4us-gaap_CashAndCashEquivalentsAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Cash and cash equivalents:2false 5us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse1458500014585USD$falsetruefalse2truefalsefalse1261200012612USD$falsetruefalse3truefalsefalse1235000012350USD$falsetruefalsexbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=29635418&loc=d3e12355-114930 false2Fair value of plan assets3false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse4false USDtruefalse$c187_AsOf30Jun2013_MoneyMarketFundsMember_FairValueInputsLevel1Memberhttp://www.sec.gov/CIK0000006314instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseMoney Market Funds [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MoneyMarketFundsMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseFair Value, Inputs, Level 1 [Member]us-gaap_FairValueByFairValueHierarchyLevelAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel1Memberus-gaap_FairValueByFairValueHierarchyLevelAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member]4true 4us-gaap_CashAndCashEquivalentsAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Cash and cash equivalents:5false 5us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse502000502USD$falsefalsefalse2truefalsefalse573000573USD$falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=29635418&loc=d3e12355-114930 false2Fair value of plan assets6false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse6false USDtruefalse$c162_AsOf30Jun2013_MoneyMarketFundsMemberhttp://www.sec.gov/CIK0000006314instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseMoney Market Funds [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_MoneyMarketFundsMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Money Market Funds [Member]7true 4us-gaap_CashAndCashEquivalentsAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Cash and cash equivalents:8false 5us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse573000573USD$falsefalsefalse2truefalsefalse502000502USD$falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=29635418&loc=d3e12355-114930 false2Fair value of plan assets9false 5anen_DefinedBenefitPlanCarryingValueOfPlanAssetsanen_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse502000502USD$falsefalsefalse2truefalsefalse573000573USD$falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryDefined benefit plan carrying value of plan assets.No definition available.false2Carrying value of plan assets10false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse8false USDtruefalse$c188_AsOf30Jun2013_CorporateDebtSecuritiesMember_FairValueInputsLevel1Memberhttp://www.sec.gov/CIK0000006314instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseCorporate Debt Securities [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CorporateDebtSecuritiesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseFair Value, Inputs, Level 1 [Member]us-gaap_FairValueByFairValueHierarchyLevelAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel1Memberus-gaap_FairValueByFairValueHierarchyLevelAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]11true 4us-gaap_CashAndCashEquivalentsAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Cash and cash equivalents:12false 5us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse28130002813USD$falsefalsefalse2truefalsefalse29330002933USD$falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=29635418&loc=d3e12355-114930 false2Fair value of plan assets13false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse10false USDtruefalse$c166_AsOf30Jun2013_CorporateDebtSecuritiesMemberhttp://www.sec.gov/CIK0000006314instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseCorporate Debt Securities [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_CorporateDebtSecuritiesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Corporate Debt Securities [Member]14true 4us-gaap_CashAndCashEquivalentsAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Cash and cash equivalents:15false 5us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse29330002933USD$falsefalsefalse2truefalsefalse28130002813USD$falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=29635418&loc=d3e12355-114930 false2Fair value of plan assets16false 5anen_DefinedBenefitPlanCarryingValueOfPlanAssetsanen_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse28130002813USD$falsefalsefalse2truefalsefalse29330002933USD$falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryDefined benefit plan carrying value of plan assets.No definition available.false2Carrying value of plan assets17false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse12false USDtruefalse$c189_AsOf30Jun2013_USGovernmentAgenciesDebtSecuritiesMember_FairValueInputsLevel1Memberhttp://www.sec.gov/CIK0000006314instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUS Government Agencies Debt Securities [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_USGovernmentAgenciesDebtSecuritiesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseFair Value, Inputs, Level 1 [Member]us-gaap_FairValueByFairValueHierarchyLevelAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel1Memberus-gaap_FairValueByFairValueHierarchyLevelAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]18true 4us-gaap_CashAndCashEquivalentsAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Cash and cash equivalents:19false 5us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse18990001899USD$falsefalsefalse2truefalsefalse18630001863USD$falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=29635418&loc=d3e12355-114930 false2Fair value of plan assets20false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse14false USDtruefalse$c170_AsOf30Jun2013_USGovernmentAgenciesDebtSecuritiesMemberhttp://www.sec.gov/CIK0000006314instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseUS Government Agencies Debt Securities [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_USGovernmentAgenciesDebtSecuritiesMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0US Government Agencies Debt Securities [Member]21true 4us-gaap_CashAndCashEquivalentsAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Cash and cash equivalents:22false 5us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse18630001863USD$falsefalsefalse2truefalsefalse18990001899USD$falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=29635418&loc=d3e12355-114930 false2Fair value of plan assets23false 5anen_DefinedBenefitPlanCarryingValueOfPlanAssetsanen_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse18990001899USD$falsefalsefalse2truefalsefalse18630001863USD$falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryDefined benefit plan carrying value of plan assets.No definition available.false2Carrying value of plan assets24false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse16false USDtruefalse$c185_AsOf30Jun2013_ClosedEndEquityMutualFundsMember_FairValueInputsLevel1Memberhttp://www.sec.gov/CIK0000006314instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseClosed End Equity Mutual Funds [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldianen_ClosedEndEquityMutualFundsMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseFair Value, Inputs, Level 1 [Member]us-gaap_FairValueByFairValueHierarchyLevelAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel1Memberus-gaap_FairValueByFairValueHierarchyLevelAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Closed End Equity Mutual Funds [Member] | Fair Value, Inputs, Level 1 [Member]25true 4us-gaap_CashAndCashEquivalentsAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Cash and cash equivalents:26false 5us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse76910007691USD$falsefalsefalse2truefalsefalse63420006342USD$falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=29635418&loc=d3e12355-114930 false2Fair value of plan assets27false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse18false USDtruefalse$c174_AsOf30Jun2013_ClosedEndEquityMutualFundsMemberhttp://www.sec.gov/CIK0000006314instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseClosed End Equity Mutual Funds [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldianen_ClosedEndEquityMutualFundsMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Closed End Equity Mutual Funds [Member]28true 4us-gaap_CashAndCashEquivalentsAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Cash and cash equivalents:29false 5us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse76910007691USD$falsefalsefalse2truefalsefalse63420006342USD$falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=29635418&loc=d3e12355-114930 false2Fair value of plan assets30false 5anen_DefinedBenefitPlanCarryingValueOfPlanAssetsanen_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse76910007691USD$falsefalsefalse2truefalsefalse63420006342USD$falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryDefined benefit plan carrying value of plan assets.No definition available.false2Carrying value of plan assets31false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse20false USDtruefalse$c186_AsOf30Jun2013_ClosedEndGlobalEquityMutualFundsMember_FairValueInputsLevel1Memberhttp://www.sec.gov/CIK0000006314instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseClosed End Global Equity Mutual Funds [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldianen_ClosedEndGlobalEquityMutualFundsMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberfalsefalseFair Value, Inputs, Level 1 [Member]us-gaap_FairValueByFairValueHierarchyLevelAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_FairValueInputsLevel1Memberus-gaap_FairValueByFairValueHierarchyLevelAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Closed End Global Equity Mutual Funds [Member] | Fair Value, Inputs, Level 1 [Member]32true 4us-gaap_CashAndCashEquivalentsAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Cash and cash equivalents:33false 5us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse15250001525USD$falsefalsefalse2truefalsefalse10560001056USD$falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=29635418&loc=d3e12355-114930 false2Fair value of plan assets34false 0truefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalse22false USDtruefalse$c178_AsOf30Jun2013_ClosedEndGlobalEquityMutualFundsMemberhttp://www.sec.gov/CIK0000006314instant2013-06-30T00:00:000001-01-01T00:00:00falsefalseClosed End Global Equity Mutual Funds [Member]us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisxbrldihttp://xbrl.org/2006/xbrldianen_ClosedEndGlobalEquityMutualFundsMemberus-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxisexplicitMemberusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$nanafalse0Closed End Global Equity Mutual Funds [Member]35true 4us-gaap_CashAndCashEquivalentsAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00falsefalsefalse2falsefalsefalse00falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Cash and cash equivalents:36false 5us-gaap_DefinedBenefitPlanFairValueOfPlanAssetsus-gaap_truedebitinstantfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1truefalsefalse15250001525USD$falsefalsefalse2truefalsefalse10560001056USD$falsefalsefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryAssets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=29635418&loc=d3e12355-114930 false2Fair value of plan assets37false 5anen_DefinedBenefitPlanCarryingValueOfPlanAssetsanen_falsedebitinstantfalsefalsefalsefalsefalsefalsefalsefalselabel1truefalsefalse15250001525USD$falsetruefalse2truefalsefalse10560001056USD$falsetruefalse3falsefalsefalse00falsefalsefalsexbrli:monetaryItemTypemonetaryDefined benefit plan carrying value of plan assets.No definition available.false2Carrying value of plan assetsfalseNote 13 - Employee Benefit Plans (Details) - Fair value of plan assets (USD $)ThousandsUnKnownUnKnownUnKnowntruefalsefalseSheethttp://investor.anaren.com/role/FairvalueofplanassetsTable337