2.3.0.11 Html 255 289 1 false 63 0 false 16 true false R1.htm 0010 - Statement - Condensed Consolidated Statements of Operations Sheet http://www.atmel.com/role/StatementOfIncome Condensed Consolidated Statements of Operations false false R2.htm 0020 - Statement - Condensed Consolidated Balance Sheets Sheet http://www.atmel.com/role/BalanceSheet Condensed Consolidated Balance Sheets false false R3.htm 0025 - Statement - Condensed Consolidated Balance Sheets (Parenthetical) Sheet http://www.atmel.com/role/BalanceSheetParenthetical Condensed Consolidated Balance Sheets (Parenthetical) false false R4.htm 0030 - Statement - Condensed Consolidated Statements of Cash Flows Sheet http://www.atmel.com/role/CashFlows Condensed Consolidated Statements of Cash Flows false false R5.htm 1010 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Sheet http://www.atmel.com/role/DisclosureSummaryOfSignificantAccountingPolicies SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES false false R6.htm 1020 - Disclosure - INVESTMENTS Sheet http://www.atmel.com/role/DisclosureInvestments INVESTMENTS false false R7.htm 1030 - Disclosure - FAIR VALUE OF ASSETS AND LIABILITIES Sheet http://www.atmel.com/role/DisclosureFairValueOfAssetsAndLiabilities FAIR VALUE OF ASSETS AND LIABILITIES false false R8.htm 1040 - Disclosure - STOCKHOLDERS' EQUITY Sheet http://www.atmel.com/role/DisclosureStockholdersEquity STOCKHOLDERS' EQUITY false false R9.htm 1050 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME Sheet http://www.atmel.com/role/DisclosureAccumulatedOtherComprehensiveIncome ACCUMULATED OTHER COMPREHENSIVE INCOME false false R10.htm 1060 - Disclosure - COMMITMENTS AND CONTINGENCIES Sheet http://www.atmel.com/role/DisclosureCommitmentsAndContingencies COMMITMENTS AND CONTINGENCIES false false R11.htm 1070 - Disclosure - INCOME TAXES Sheet http://www.atmel.com/role/DisclosureIncomeTaxes INCOME TAXES false false R12.htm 1080 - Disclosure - PENSION PLANS Sheet http://www.atmel.com/role/DisclosurePensionPlans PENSION PLANS false false R13.htm 1090 - Disclosure - OPERATING AND GEOGRAPHICAL SEGMENTS Sheet http://www.atmel.com/role/DisclosureOperatingAndGeographicalSegments OPERATING AND GEOGRAPHICAL SEGMENTS false false R14.htm 1100 - Disclosure - LOSS (GAIN) ON SALE OF ASSETS AND ASSET IMPAIRMENT CHARGES Sheet http://www.atmel.com/role/DisclosureGainLossOnSaleOfAssetsAssetImpairmentChargesAndAssetsHeldForSale LOSS (GAIN) ON SALE OF ASSETS AND ASSET IMPAIRMENT CHARGES false false R15.htm 1110 - Disclosure - RESTRUCTURING CHARGES Sheet http://www.atmel.com/role/DisclosureRestructuringCharges RESTRUCTURING CHARGES false false R16.htm 1120 - Disclosure - NET INCOME (LOSS) PER SHARE Sheet http://www.atmel.com/role/DisclosureNetIncomeLossPerShare NET INCOME (LOSS) PER SHARE false false R17.htm 1130 - Disclosure - INTEREST AND OTHER (EXPENSE) INCOME, NET Sheet http://www.atmel.com/role/DisclosureInterestAndOtherExpenseIncomeNet INTEREST AND OTHER (EXPENSE) INCOME, NET false false R18.htm 2010 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) Sheet http://www.atmel.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) false false R19.htm 3010 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) Sheet http://www.atmel.com/role/DisclosureSummaryOfSignificantAccountingPoliciesTables SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) false false R20.htm 3020 - Disclosure - INVESTMENTS (Tables) Sheet http://www.atmel.com/role/DisclosureInvestmentsTables INVESTMENTS (Tables) false false R21.htm 3030 - Disclosure - FAIR VALUE OF ASSETS AND LIABILITIES (Tables) Sheet http://www.atmel.com/role/DisclosureFairValueOfAssetsAndLiabilitiesTables FAIR VALUE OF ASSETS AND LIABILITIES (Tables) false false R22.htm 3040 - Disclosure - STOCKHOLDERS' EQUITY (Tables) Sheet http://www.atmel.com/role/DisclosureStockholdersEquityTables STOCKHOLDERS' EQUITY (Tables) false false R23.htm 3050 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME (Tables) Sheet http://www.atmel.com/role/DisclosureAccumulatedOtherComprehensiveIncomeTables ACCUMULATED OTHER COMPREHENSIVE INCOME (Tables) false false R24.htm 3060 - Disclosure - COMMITMENTS AND CONTINGENCIES (Tables) Sheet http://www.atmel.com/role/DisclosureCommitmentsAndContingenciesTables COMMITMENTS AND CONTINGENCIES (Tables) false false R25.htm 3070 - Disclosure - INCOME TAXES (Tables) Sheet http://www.atmel.com/role/DisclosureIncomeTaxesTables INCOME TAXES (Tables) false false R26.htm 3080 - Disclosure - PENSION PLANS (Tables) Sheet http://www.atmel.com/role/DisclosurePensionPlansTables PENSION PLANS (Tables) false false R27.htm 3090 - Disclosure - OPERATING AND GEOGRAPHICAL SEGMENTS (Tables) Sheet http://www.atmel.com/role/DisclosureOperatingAndGeographicalSegmentsTables OPERATING AND GEOGRAPHICAL SEGMENTS (Tables) false false R28.htm 3100 - Disclosure - LOSS (GAIN) ON SALE OF ASSETS AND ASSET IMPAIRMENT CHARGES (Tables) Sheet http://www.atmel.com/role/DisclosureGainLossOnSaleOfAssetsAssetImpairmentChargesAndAssetsHeldForSaleTables LOSS (GAIN) ON SALE OF ASSETS AND ASSET IMPAIRMENT CHARGES (Tables) false false R29.htm 3110 - Disclosure - RESTRUCTURING CHARGES (Tables) Sheet http://www.atmel.com/role/DisclosureRestructuringChargesTables RESTRUCTURING CHARGES (Tables) false false R30.htm 3120 - Disclosure - NET INCOME (LOSS) PER SHARE (Tables) Sheet http://www.atmel.com/role/DisclosureNetIncomeLossPerShareTables NET INCOME (LOSS) PER SHARE (Tables) false false R31.htm 3130 - Disclosure - INTEREST AND OTHER (EXPENSE) INCOME, NET (Tables) Sheet http://www.atmel.com/role/DisclosureInterestAndOtherExpenseIncomeNetTables INTEREST AND OTHER (EXPENSE) INCOME, NET (Tables) false false R32.htm 4010 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) Sheet http://www.atmel.com/role/DisclosureSummaryOfSignificantAccountingPoliciesDetails SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) false false R33.htm 4011 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2) Sheet http://www.atmel.com/role/DisclosureSummaryOfSignificantAccountingPoliciesDetails2 SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2) false false R34.htm 4020 - Disclosure - INVESTMENTS (Details) Sheet http://www.atmel.com/role/DisclosureInvestmentsDetails INVESTMENTS (Details) false false R35.htm 4030 - Disclosure - FAIR VALUE OF ASSETS AND LIABILITIES (Details) Sheet http://www.atmel.com/role/DisclosureFairValueOfAssetsAndLiabilitiesDetails FAIR VALUE OF ASSETS AND LIABILITIES (Details) false false R36.htm 4040 - Disclosure - STOCKHOLDERS' EQUITY (Details) Sheet http://www.atmel.com/role/DisclosureStockholdersEquityDetails STOCKHOLDERS' EQUITY (Details) false false R37.htm 4041 - Disclosure - STOCKHOLDERS' EQUITY (Details 2) Sheet http://www.atmel.com/role/DisclosureStockholdersEquityDetails2 STOCKHOLDERS' EQUITY (Details 2) false false R38.htm 4050 - Disclosure - ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) Sheet http://www.atmel.com/role/DisclosureAccumulatedOtherComprehensiveIncomeDetails ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) false false R39.htm 4060 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details) Sheet http://www.atmel.com/role/DisclosureCommitmentsAndContingenciesDetails COMMITMENTS AND CONTINGENCIES (Details) false false R40.htm 4061 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details 2) Sheet http://www.atmel.com/role/DisclosureCommitmentsAndContingenciesDetails2 COMMITMENTS AND CONTINGENCIES (Details 2) false false R41.htm 4070 - Disclosure - INCOME TAXES (Details) Sheet http://www.atmel.com/role/DisclosureIncomeTaxesDetails INCOME TAXES (Details) false false R42.htm 4080 - Disclosure - PENSION PLANS (Details) Sheet http://www.atmel.com/role/DisclosurePensionPlansDetails PENSION PLANS (Details) false false R43.htm 4090 - Disclosure - OPERATING AND GEOGRAPHICAL SEGMENTS (Details) Sheet http://www.atmel.com/role/DisclosureOperatingAndGeographicalSegmentsDetails OPERATING AND GEOGRAPHICAL SEGMENTS (Details) false false R44.htm 4091 - Disclosure - OPERATING AND GEOGRAPHICAL SEGMENTS (Details 2) Sheet http://www.atmel.com/role/DisclosureOperatingAndGeographicalSegmentsDetails2 OPERATING AND GEOGRAPHICAL SEGMENTS (Details 2) false false R45.htm 4092 - Disclosure - OPERATING AND GEOGRAPHICAL SEGMENTS (Details 3) Sheet http://www.atmel.com/role/DisclosureOperatingAndGeographicalSegmentsDetails3 OPERATING AND GEOGRAPHICAL SEGMENTS (Details 3) false false R46.htm 4100 - Disclosure - LOSS (GAIN) ON SALE OF ASSETS AND ASSET IMPAIRMENT CHARGES (Details) Sheet http://www.atmel.com/role/DisclosureGainLossOnSaleOfAssetsAssetImpairmentChargesAndAssetsHeldForSaleDetails LOSS (GAIN) ON SALE OF ASSETS AND ASSET IMPAIRMENT CHARGES (Details) false false R47.htm 4110 - Disclosure - RESTRUCTURING CHARGES (Details) Sheet http://www.atmel.com/role/DisclosureRestructuringChargesDetails RESTRUCTURING CHARGES (Details) false false R48.htm 4120 - Disclosure - NET INCOME (LOSS) PER SHARE (Details) Sheet http://www.atmel.com/role/DisclosureNetIncomeLossPerShareDetails NET INCOME (LOSS) PER SHARE (Details) false false R49.htm 4130 - Disclosure - INTEREST AND OTHER (EXPENSE) INCOME, NET (Details) Sheet http://www.atmel.com/role/DisclosureInterestAndOtherExpenseIncomeNetDetails INTEREST AND OTHER (EXPENSE) INCOME, NET (Details) false false R50.htm 9999 - Document - Document and Entity Information Sheet http://www.atmel.com/role/DocumentAndEntityInformation Document and Entity Information false false All Reports Book All Reports 'Shares' elements on report '4041 - Disclosure - STOCKHOLDERS' EQUITY (Details 2)' had a mix of different decimal attribute values. Process Flow-Through: 0010 - Statement - Condensed Consolidated Statements of Operations Process Flow-Through: 0020 - Statement - Condensed Consolidated Balance Sheets Process Flow-Through: Removing column 'Mar. 31, 2011' Process Flow-Through: Removing column 'Jun. 30, 2010' Process Flow-Through: Removing column 'Dec. 31, 2009' Process Flow-Through: 0025 - Statement - Condensed Consolidated Balance Sheets (Parenthetical) Process Flow-Through: 0030 - Statement - Condensed Consolidated Statements of Cash Flows atml-20110630.xml atml-20110630.xsd atml-20110630_cal.xml atml-20110630_def.xml atml-20110630_lab.xml atml-20110630_pre.xml true true