Current report of foreign issuer pursuant to Rules 13a-16 and 15d-16 Amendments

Goodwill and Other Intangible Assets (Narrative) (Details)

v2.4.1.9
Goodwill and Other Intangible Assets (Narrative) (Details) (USD $)
3 Months Ended 12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Impairment charges $ 43,205,000us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill     
Finite-lived intangible assets, gross 786,212,000us-gaap_FiniteLivedIntangibleAssetsGross   784,604,000us-gaap_FiniteLivedIntangibleAssetsGross
Goodwill 1,171,077,000us-gaap_Goodwill   1,323,502,000us-gaap_Goodwill
Amortization of intangible assets 22,000,000us-gaap_AmortizationOfIntangibleAssets 19,000,000us-gaap_AmortizationOfIntangibleAssets  
Developed Technology [Member]      
Finite-lived intangible assets, gross 512,502,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_DevelopedTechnologyRightsMember
  512,402,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_DevelopedTechnologyRightsMember
Customer Relationships [Member]      
Finite-lived intangible assets, gross 149,194,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember
  148,338,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember
MakerBot [Member]      
Impairment charges 43,200,000us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
/ us-gaap_BusinessAcquisitionAxis
= ssys_MakerbotMember
  102,500,000us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
/ us-gaap_BusinessAcquisitionAxis
= ssys_MakerbotMember
Non-tax deductible impairment charge 150,400,000us-gaap_AssetImpairmentCharges
/ us-gaap_BusinessAcquisitionAxis
= ssys_MakerbotMember
   
Percentage of decrease in growth rate 1.00%ssys_PercentageOfDecreaseInGrowthRate
/ us-gaap_BusinessAcquisitionAxis
= ssys_MakerbotMember
   
Percentage of increase in discount rate 1.00%ssys_PercentageOfIncreaseInDiscountRate
/ us-gaap_BusinessAcquisitionAxis
= ssys_MakerbotMember
   
Change in fair value due to 1% decrease in growth rate 18,900,000ssys_IncreaseDecreaseInFairValueDueToOnePercentDecreaseInGrowthRate
/ us-gaap_BusinessAcquisitionAxis
= ssys_MakerbotMember
   
Change in fair value due to 1% increase in discount rate 29,600,000ssys_IncreaseDecreaseInFairValueDueToOnePercentIncreaseInDiscountRate
/ us-gaap_BusinessAcquisitionAxis
= ssys_MakerbotMember
   
Goodwill 0us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= ssys_MakerbotMember
   
MakerBot [Member] | Level 3 [Member]      
Growth rate (as a percent) 3.50%us-gaap_FairValueInputsLongTermRevenueGrowthRate
/ us-gaap_BusinessAcquisitionAxis
= ssys_MakerbotMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
   
Discount rate (as a percent) 13.50%us-gaap_FairValueInputsDiscountRate
/ us-gaap_BusinessAcquisitionAxis
= ssys_MakerbotMember
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
   
MakerBot [Member] | Developed Technology [Member]      
Impairment charges 29,800,000us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
/ us-gaap_BusinessAcquisitionAxis
= ssys_MakerbotMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_DevelopedTechnologyRightsMember
   
MakerBot [Member] | Customer Relationships [Member]      
Impairment charges $ 13,400,000us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
/ us-gaap_BusinessAcquisitionAxis
= ssys_MakerbotMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerRelationshipsMember