XML 103 R102.htm IDEA: XBRL DOCUMENT v2.4.1.9
RESTRUCTURING CHARGES (Narrative) (Details) (USD $)
12 Months Ended 3 Months Ended 0 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Mar. 31, 2013
Sep. 30, 2013
Restructuring Cost and Reserve [Line Items]          
Restructuring charges $ 13,882,000us-gaap_RestructuringCharges $ 50,026,000us-gaap_RestructuringCharges $ 23,986,000us-gaap_RestructuringCharges    
Curtailment gain 0us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments 1,607,000us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments 0us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments    
Asset impairment charges 26,624,000us-gaap_AssetImpairmentCharges 7,502,000us-gaap_AssetImpairmentCharges 0us-gaap_AssetImpairmentCharges    
Employee Severance [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring charges 13,882,000us-gaap_RestructuringCharges
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_EmployeeSeveranceMember
44,394,000us-gaap_RestructuringCharges
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_EmployeeSeveranceMember
23,491,000us-gaap_RestructuringCharges
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_EmployeeSeveranceMember
   
Non-cash charges 5,179,000us-gaap_RestructuringReserveSettledWithoutCash1
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_EmployeeSeveranceMember
       
Employee Severance [Member] | Q1'13 [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring charges (2,077,000)us-gaap_RestructuringCharges
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_EmployeeSeveranceMember
/ us-gaap_RestructuringPlanAxis
= atml_QuarterOne2013Member
44,084,000us-gaap_RestructuringCharges
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_EmployeeSeveranceMember
/ us-gaap_RestructuringPlanAxis
= atml_QuarterOne2013Member
     
Non-cash charges 5,111,000us-gaap_RestructuringReserveSettledWithoutCash1
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_EmployeeSeveranceMember
/ us-gaap_RestructuringPlanAxis
= atml_QuarterOne2013Member
    5,100,000us-gaap_RestructuringReserveSettledWithoutCash1
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_EmployeeSeveranceMember
/ us-gaap_RestructuringPlanAxis
= atml_QuarterOne2013Member
 
Employee Severance [Member] | Q3'13 [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring charges (292,000)us-gaap_RestructuringCharges
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_EmployeeSeveranceMember
/ us-gaap_RestructuringPlanAxis
= atml_QuarterThree2013Member
2,043,000us-gaap_RestructuringCharges
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_EmployeeSeveranceMember
/ us-gaap_RestructuringPlanAxis
= atml_QuarterThree2013Member
     
Non-cash charges 0us-gaap_RestructuringReserveSettledWithoutCash1
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_EmployeeSeveranceMember
/ us-gaap_RestructuringPlanAxis
= atml_QuarterThree2013Member
       
Impairment [Member] | Q1'13 [Member]          
Restructuring Cost and Reserve [Line Items]          
Non-cash charges       6,700,000us-gaap_RestructuringReserveSettledWithoutCash1
/ us-gaap_RestructuringCostAndReserveAxis
= atml_ImpairmentMember
/ us-gaap_RestructuringPlanAxis
= atml_QuarterOne2013Member
 
Contract Termination [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring charges     500,000us-gaap_RestructuringCharges
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_ContractTerminationMember
   
France [Member] | Q1'13 [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring charges       32,900,000us-gaap_RestructuringCharges
/ us-gaap_RestructuringPlanAxis
= atml_QuarterOne2013Member
/ us-gaap_StatementGeographicalAxis
= country_FR
 
Heilbronn [Member] | Q1'13 [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring charges   15,800,000us-gaap_RestructuringCharges
/ us-gaap_RestructuringPlanAxis
= atml_QuarterOne2013Member
/ us-gaap_StatementGeographicalAxis
= atml_Heilbronn2013Member
     
US and other locations [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring charges     14,600,000us-gaap_RestructuringCharges
/ us-gaap_StatementGeographicalAxis
= atml_USandotherlocationsMember
   
US and other locations [Member] | Q1'13 [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring Charges, Net of Change in Estimate   900,000atml_RestructuringChargesNetOfChangeInEstimate
/ us-gaap_RestructuringPlanAxis
= atml_QuarterOne2013Member
/ us-gaap_StatementGeographicalAxis
= atml_USandotherlocationsMember
     
Heilbronn [Member] | Q1'13 [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring charges     8,500,000us-gaap_RestructuringCharges
/ us-gaap_RestructuringPlanAxis
= atml_QuarterOne2013Member
/ us-gaap_StatementGeographicalAxis
= atml_Heilbronn2012Member
   
Building [Member] | Rousset [Member]          
Restructuring Cost and Reserve [Line Items]          
Carrying value of building         10,100,000us-gaap_AssetsHeldForSaleAtCarryingValue
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_BuildingMember
/ us-gaap_StatementGeographicalAxis
= atml_RoussetMember
Fair value of building         5,000,000us-gaap_AssetsFairValueDisclosure
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_BuildingMember
/ us-gaap_StatementGeographicalAxis
= atml_RoussetMember
Building [Member] | Greece [Member]          
Restructuring Cost and Reserve [Line Items]          
Carrying value of building         2,700,000us-gaap_AssetsHeldForSaleAtCarryingValue
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_BuildingMember
/ us-gaap_StatementGeographicalAxis
= country_GR
Fair value of building         1,100,000us-gaap_AssetsFairValueDisclosure
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_BuildingMember
/ us-gaap_StatementGeographicalAxis
= country_GR
Asset impairment charges         $ 6,700,000us-gaap_AssetImpairmentCharges
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_BuildingMember
/ us-gaap_StatementGeographicalAxis
= country_GR