| Acquisitions (Narrative) (Details) (USD $)
 | 12 Months Ended | 0 Months Ended | 6 Months Ended |  |  | 
      
        | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 11, 2014 | Dec. 01, 2012 | Jul. 14, 2014 | Aug. 15, 2013 | Aug. 15, 2013 | Dec. 31, 2013 | Sep. 22, 2014 | Aug. 01, 2014 | 
      
        | Change in fair value of obligations in connection with acquisitions | $ (26,150,000)ssys_ChangeInFairValueOfObligationsInConnectionWithAcquisitions | $ 754,000ssys_ChangeInFairValueOfObligationsInConnectionWithAcquisitions |  |  |  |  |  |  |  |  |  | 
      
        | Fair value of shares issued and stock options | 117,845,000us-gaap_StockIssuedDuringPeriodValueAcquisitions | 453,217,000us-gaap_StockIssuedDuringPeriodValueAcquisitions | 1,340,897,000us-gaap_StockIssuedDuringPeriodValueAcquisitions |  |  |  |  |  |  |  |  | 
      
        | Selling, general and administrative expenses |  |  | 7,600,000us-gaap_SellingGeneralAndAdministrativeExpense |  |  |  |  |  |  |  |  | 
      
        | Reverse stock split | one-for-8.691 |  |  |  |  |  |  |  |  |  |  | 
      
        | Joint venture [Member] |  |  |  |  |  |  |  |  |  |  |  | 
      
        | Agreement term |  |  |  | 5 years |  |  |  |  |  |  |  | 
      
        | Objet Ltd [Member] |  |  |  |  |  |  |  |  |  |  |  | 
      
        | Compensation expense |  |  |  |  | 4,500,000us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_BusinessAcquisitionAxis
 = ssys_ObjetLtdMember
 |  |  |  |  |  |  | 
      
        | Objet Ltd [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |  |  |  |  | 
      
        | Weighted Average Life - Years |  |  |  |  | 10 years |  |  |  |  |  |  | 
      
        | Objet Ltd [Member] | Trade name [Member] |  |  |  |  |  |  |  |  |  |  |  | 
      
        | Weighted Average Life - Years |  |  |  |  | 9 years |  |  |  |  |  |  | 
      
        | Solid Concepts Inc [Member] |  |  |  |  |  |  |  |  |  |  |  | 
      
        | Ownership percentage |  |  |  |  |  | 100.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis
 = ssys_SolidConceptsIncMember
 |  |  |  |  |  | 
      
        | Change in fair value of obligations in connection with acquisitions | 7,900,000ssys_ChangeInFairValueOfObligationsInConnectionWithAcquisitions / us-gaap_BusinessAcquisitionAxis
 = ssys_SolidConceptsIncMember
 |  |  |  |  |  |  |  |  |  |  | 
      
        | Acquisition related costs | 2,900,000us-gaap_BusinessCombinationAcquisitionRelatedCosts / us-gaap_BusinessAcquisitionAxis
 = ssys_SolidConceptsIncMember
 |  |  |  |  |  |  |  |  |  |  | 
      
        | Potential retention related payments | 45,900,000ssys_MaximumPotentialRetentionRelatedPayments / us-gaap_BusinessAcquisitionAxis
 = ssys_SolidConceptsIncMember
 |  |  |  |  | 77,000,000ssys_MaximumPotentialRetentionRelatedPayments / us-gaap_BusinessAcquisitionAxis
 = ssys_SolidConceptsIncMember
 |  |  |  |  |  | 
      
        | Retention related payments | 13,100,000us-gaap_BusinessCombinationConsiderationTransferredOther1 / us-gaap_BusinessAcquisitionAxis
 = ssys_SolidConceptsIncMember
 |  |  |  |  |  |  |  |  |  |  | 
      
        | Other intangible assets |  |  |  |  |  | 37,606,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_BusinessAcquisitionAxis
 = ssys_SolidConceptsIncMember
 |  |  |  |  |  | 
      
        | Stock Issued During Period, Shares, Acquisitions |  |  |  |  |  | 978,601,000us-gaap_StockIssuedDuringPeriodSharesAcquisitions / us-gaap_BusinessAcquisitionAxis
 = ssys_SolidConceptsIncMember
 |  |  |  |  |  | 
      
        | Fair value of shares issued and stock options |  |  |  |  |  | 97,869,000us-gaap_StockIssuedDuringPeriodValueAcquisitions / us-gaap_BusinessAcquisitionAxis
 = ssys_SolidConceptsIncMember
 |  |  |  |  |  | 
      
        | Solid Concepts Inc [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |  |  |  |  | 
      
        | Other intangible assets | 36,500,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_BusinessAcquisitionAxis
 = ssys_SolidConceptsIncMember
 / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
 = us-gaap_CustomerRelationshipsMember
 |  |  |  |  |  |  |  |  |  |  | 
      
        | Weighted Average Life - Years | 6 years 7 months 6 days |  |  |  |  |  |  |  |  |  |  | 
      
        | Solid Concepts Inc [Member] | Trade name [Member] |  |  |  |  |  |  |  |  |  |  |  | 
      
        | Other intangible assets | 1,100,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles / us-gaap_BusinessAcquisitionAxis
 = ssys_SolidConceptsIncMember
 / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
 = us-gaap_TradeNamesMember
 |  |  |  |  |  |  |  |  |  |  | 
      
        | Solid Concepts Inc [Member] | Level 3 [Member] |  |  |  |  |  |  |  |  |  |  |  | 
      
        | Fair value of the deferred payment | 35,700,000ssys_BusinessCombinationConsiderationFairValueOfDeferredPayments / us-gaap_BusinessAcquisitionAxis
 = ssys_SolidConceptsIncMember
 / us-gaap_FairValueByFairValueHierarchyLevelAxis
 = us-gaap_FairValueInputsLevel3Member
 |  |  |  |  |  |  |  |  |  |  | 
      
        | Undiscounted amount of the deferred payments | 40,600,000ssys_UnadjustedAmountOfDeferredPayments / us-gaap_BusinessAcquisitionAxis
 = ssys_SolidConceptsIncMember
 / us-gaap_FairValueByFairValueHierarchyLevelAxis
 = us-gaap_FairValueInputsLevel3Member
 |  |  |  |  |  |  |  |  |  |  | 
      
        | Increase percentage in share price whose effect on fair value of deferred payments | 10.00%ssys_BusinessCombinationIncreasePercentageInSharePriceWhoseEffectOnFairValueOfDeferredPayments / us-gaap_BusinessAcquisitionAxis
 = ssys_SolidConceptsIncMember
 / us-gaap_FairValueByFairValueHierarchyLevelAxis
 = us-gaap_FairValueInputsLevel3Member
 |  |  |  |  |  |  |  |  |  |  | 
      
        | Increase in fair value of deferred payments due to increase of share price | 3,600,000ssys_BusinessCombinationIncreaseInFairValueOfDeferredPaymentsDueToIncreaseOfSharePrice / us-gaap_BusinessAcquisitionAxis
 = ssys_SolidConceptsIncMember
 / us-gaap_FairValueByFairValueHierarchyLevelAxis
 = us-gaap_FairValueInputsLevel3Member
 |  |  |  |  |  |  |  |  |  |  | 
      
        | Decrease percentage in share price whose effect on fair value of deferred payments liability | 10.00%ssys_BusinessCombinationDecreasePercentageInSharePriceWhoseEffectOnFairValueOfDeferredPaymentsLiability / us-gaap_BusinessAcquisitionAxis
 = ssys_SolidConceptsIncMember
 / us-gaap_FairValueByFairValueHierarchyLevelAxis
 = us-gaap_FairValueInputsLevel3Member
 |  |  |  |  |  |  |  |  |  |  | 
      
        | Increase in fair value of deferred payments liability due to decrease of share price | 1,000,000ssys_BusinessCombinationIncreaseInFairValueOfDeferredPaymentsLiabilityDueToDecreaseOfSharePrice / us-gaap_BusinessAcquisitionAxis
 = ssys_SolidConceptsIncMember
 / us-gaap_FairValueByFairValueHierarchyLevelAxis
 = us-gaap_FairValueInputsLevel3Member
 |  |  |  |  |  |  |  |  |  |  | 
      
        | Solid Concepts Inc [Member] | Retention-related and other payments [Member] |  |  |  |  |  |  |  |  |  |  |  | 
      
        | Cash paid for acquisitions |  |  |  |  |  | 19,600,000ssys_PaymentToAcquisitionsAndRelatedItems / us-gaap_BusinessAcquisitionAxis
 = ssys_SolidConceptsIncMember
 / us-gaap_StatementScenarioAxis
 = ssys_RetentionRelatedAndOtherPaymentsMember
 |  |  |  |  |  | 
      
        | GrabCAD |  |  |  |  |  |  |  |  |  |  |  | 
      
        | Ownership percentage |  |  |  |  |  |  |  |  |  | 100.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis
 = ssys_GradCADIncMember
 |  | 
      
        | Harvest Technologies Inc. [Member] |  |  |  |  |  |  |  |  |  |  |  | 
      
        | Ownership percentage |  |  |  |  |  |  |  |  |  |  | 100.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis
 = ssys_HarvestTechnologiesIncMember
 | 
      
        | MakerBot [Member] |  |  |  |  |  |  |  |  |  |  |  | 
      
        | Ownership percentage |  |  |  |  |  |  | 100.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis
 = ssys_MakerbotMember
 | 100.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis
 = ssys_MakerbotMember
 |  |  |  | 
      
        | Change in fair value of obligations in connection with acquisitions | 18,300,000ssys_ChangeInFairValueOfObligationsInConnectionWithAcquisitions / us-gaap_BusinessAcquisitionAxis
 = ssys_MakerbotMember
 |  |  |  |  |  |  |  |  |  |  | 
      
        | Consideration issued for acquisition |  |  |  |  |  |  | 493,700,000us-gaap_BusinessCombinationConsiderationTransferredIncludingEquityInterestInAcquireeHeldPriorToCombination1 / us-gaap_BusinessAcquisitionAxis
 = ssys_MakerbotMember
 |  |  |  |  | 
      
        | Earn-out obligation amount |  | 10,800,000us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_BusinessAcquisitionAxis
 = ssys_MakerbotMember
 |  |  |  |  |  |  | 10,800,000us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh / us-gaap_BusinessAcquisitionAxis
 = ssys_MakerbotMember
 |  |  | 
      
        | Stock Issued During Period, Shares, Acquisitions |  |  |  |  |  |  |  | 3,920,000us-gaap_StockIssuedDuringPeriodSharesAcquisitions / us-gaap_BusinessAcquisitionAxis
 = ssys_MakerbotMember
 |  |  |  | 
      
        | Exchange for fully diluted shares |  |  |  |  |  |  |  | 73,000us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment / us-gaap_BusinessAcquisitionAxis
 = ssys_MakerbotMember
 |  |  |  | 
      
        | Amount of shares issued for which the company paid tax withholding payments |  |  |  |  |  |  |  | 115,000ssys_AmountOfSharesIssuedForWhichCompanyPaidTaxWithholdingPayments / us-gaap_BusinessAcquisitionAxis
 = ssys_MakerbotMember
 |  |  |  | 
      
        | Amount of shares held to secure indemnification rights |  |  |  |  |  |  |  | 655,000ssys_AmountOfSharesHeldToSecureIndemnificationRights / us-gaap_BusinessAcquisitionAxis
 = ssys_MakerbotMember
 |  |  |  | 
      
        | Shares held to settlements of indemnification rights at the end of hold-back period |  |  |  |  |  |  |  | 651,000ssys_SharesHeldToSettlementsOfIndemnificationRightsAtEndOfHoldbackPeriod / us-gaap_BusinessAcquisitionAxis
 = ssys_MakerbotMember
 |  |  |  | 
      
        | Earn-out obligation |  |  |  |  |  |  | 28,300,000ssys_EarnOutObligation / us-gaap_BusinessAcquisitionAxis
 = ssys_MakerbotMember
 | 28,300,000ssys_EarnOutObligation / us-gaap_BusinessAcquisitionAxis
 = ssys_MakerbotMember
 |  |  |  | 
      
        | Earn amount on performance bonus plan |  |  |  |  |  |  |  |  | 10,800,000ssys_BusinessCombinationContingentConsiderationEarnOutGainLossAmount / us-gaap_BusinessAcquisitionAxis
 = ssys_MakerbotMember
 |  |  | 
      
        | Value of earn-out payments | 0ssys_StockIssuedDuringPeriodValueOfEarnOutPayment / us-gaap_BusinessAcquisitionAxis
 = ssys_MakerbotMember
 |  |  |  |  |  |  |  |  |  |  | 
      
        | Selling, general and administrative expenses |  | $ 6,100,000us-gaap_SellingGeneralAndAdministrativeExpense / us-gaap_BusinessAcquisitionAxis
 = ssys_MakerbotMember
 |  |  |  |  |  |  |  |  |  | 
      
        | MakerBot [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |  |  |  |  | 
      
        | Weighted Average Life - Years |  |  |  |  |  |  | 1 year |  |  |  |  | 
      
        | MakerBot [Member] | Trade name [Member] |  |  |  |  |  |  |  |  |  |  |  | 
      
        | Weighted Average Life - Years |  |  |  |  |  |  | 11 years |  |  |  |  | 
      
        | MakerBot [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  | 
      
        | Shares issued in earn-out payments | 800,000ssys_StockIssuedDuringPeriodSharesEarnOutPayment / us-gaap_BusinessAcquisitionAxis
 = ssys_MakerbotMember
 / us-gaap_RangeAxis
 = us-gaap_MaximumMember
 |  |  |  |  |  |  |  |  |  |  |