Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Equity (Stock-based Compensation Plans) (Narrative) (Details)

v2.4.1.9
Equity (Stock-based Compensation Plans) (Narrative) (Details) (USD $)
 1 Months Ended 12 Months Ended
May 31, 2012
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Jan. 01, 2015
Stock-based compensation $ 4,500,000us-gaap_ShareBasedCompensation $ 30,207,000us-gaap_ShareBasedCompensation $ 24,262,000us-gaap_ShareBasedCompensation $ 8,874,000us-gaap_ShareBasedCompensation  
Risk-free interest rate, minimum       0.40%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum  
Risk-free interest rate, maximum       0.50%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum  
Expected price volatility, Minimum       60.70%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum  
Expected price volatility, Maximum       62.60%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum  
Expected dividend yield   0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate       
Weighted average remaining contractual life   3 years 9 months 18 days      
Exercise price, grant date fair value   $ 60.82us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue      
Total intrinsic value of options exercised   55,600,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue 160,100,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue 74,500,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue  
Unvested number of shares   848,672us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares      
Unrecognized compensation cost   36,100,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized      
Remaining vesting period   1 year 4 months 10 days      
Shares granted   239,583us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross      
2012 Plan [Member]          
Expected option term   10 years      
Equity Incentive Plan, shares authorized   3,100,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_PlanNameAxis
= ssys_EquityIncentivePlan2012Member 		     
2012 Plan [Member] | Subsequent event [Member]          
Increase of shares reserved         500,000ssys_ShareBasedCompensationArrangementByShareBasedPaymentAwardIncreasedSharesReservedAnnually
/ us-gaap_PlanNameAxis
= ssys_EquityIncentivePlan2012Member
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
Restricted Stock [Member]          
Vesting period   4 years      
Exercise price, grant date fair value   $ 92.66us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember 		$ 97.88us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember 		   
Unrecognized compensation cost   $ 56,100,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember 		     
Remaining vesting period   3 years 6 months 7 days      
Shares granted   475,511us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember 		215,153us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember 		   
Employee Stock Option [Member]          
Expected option term       4 years 6 months  
Risk-free interest rate, minimum   1.30%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember 		1.40%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMinimum
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember 		   
Risk-free interest rate, maximum   2.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember 		1.70%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateMaximum
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember 		   
Expected price volatility, Minimum   45.80%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember 		56.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember 		   
Expected price volatility, Maximum   47.60%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember 		57.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember 		   
Expected dividend yield             
Expected price volitility       62.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember 		 
Risk free interest rate       0.80%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember 		 
Employee Stock Option [Member] | 2012 Plan [Member]          
Vesting period   4 years      
Minimum [Member]          
Expected option term   2 years 6 months      
Minimum [Member] | Employee Stock Option [Member]          
Expected option term   4 years 2 months 12 days 5 years 1 month 6 days    
Maximum [Member]          
Expected option term   3 years 8 months 12 days      
Maximum [Member] | Employee Stock Option [Member]          
Expected option term   6 years 6 months 5 years 2 months 12 days