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Supplemental Schedule of Noncash Investing and Financing Activities (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2014
Class Of Warrant Or Right, Number Of Securities Called By Warrants Or Rights 5,098,661us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested Options Forfeited, Number of Shares 500,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Nonvested $ 10,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueNonvested  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value $ 0.02us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue  
Director [Member]    
Stock Issued During Period, Shares, Issued for Services   1,500,000us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
/ us-gaap_TitleOfIndividualAxis
= us-gaap_DirectorMember
Shares Issued, Price Per Share $ 0.156us-gaap_SharesIssuedPricePerShare
/ us-gaap_TitleOfIndividualAxis
= us-gaap_DirectorMember
$ 0.094us-gaap_SharesIssuedPricePerShare
/ us-gaap_TitleOfIndividualAxis
= us-gaap_DirectorMember
Employee [Member]    
Stock Issued During Period, Shares, Issued for Services   6,000,000us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
/ us-gaap_TitleOfIndividualAxis
= sglb_EmployeeMember
Shares Issued, Price Per Share   $ 0.129us-gaap_SharesIssuedPricePerShare
/ us-gaap_TitleOfIndividualAxis
= sglb_EmployeeMember
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares   1,500,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
/ us-gaap_TitleOfIndividualAxis
= sglb_EmployeeMember
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares   4,500,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares
/ us-gaap_TitleOfIndividualAxis
= sglb_EmployeeMember
Two Employees and One Director [Member]    
Stock Issued During Period, Shares, Issued for Services   850,000us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
/ us-gaap_TitleOfIndividualAxis
= sglb_TwoEmployeesAndOneDirectorMember
Shares Issued, Price Per Share   $ 0.136us-gaap_SharesIssuedPricePerShare
/ us-gaap_TitleOfIndividualAxis
= sglb_TwoEmployeesAndOneDirectorMember
Equity Incentive Plan [Member]    
Shares Issued, Price Per Share $ 0.065us-gaap_SharesIssuedPricePerShare
/ us-gaap_AwardTypeAxis
= sglb_EquityIncentivePlanMember
 
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares   1,950,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
/ us-gaap_AwardTypeAxis
= sglb_EquityIncentivePlanMember
Increase (Decrease) in Deferred Compensation   66,200us-gaap_IncreaseDecreaseInDeferredCompensation
/ us-gaap_AwardTypeAxis
= sglb_EquityIncentivePlanMember
Stock Issued During Period, Shares, New Issues 1,000,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_AwardTypeAxis
= sglb_EquityIncentivePlanMember
 
Equity Incentive Plan Two [Member]    
Increase (Decrease) in Deferred Compensation $ 35,000us-gaap_IncreaseDecreaseInDeferredCompensation
/ us-gaap_AwardTypeAxis
= sglb_EquityIncentivePlanTwoMember
 
Stock Issued During Period, Shares, New Issues 1,750,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_AwardTypeAxis
= sglb_EquityIncentivePlanTwoMember
 
Consultant One [Member]    
Stock Issued During Period, Shares, Issued for Services 500,000us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
/ sglb_ThirdPartyAxis
= sglb_ConsultantOneMember
375,000us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
/ sglb_ThirdPartyAxis
= sglb_ConsultantOneMember
Shares Issued, Price Per Share $ 0.063us-gaap_SharesIssuedPricePerShare
/ sglb_ThirdPartyAxis
= sglb_ConsultantOneMember
$ 0.126us-gaap_SharesIssuedPricePerShare
/ sglb_ThirdPartyAxis
= sglb_ConsultantOneMember
Consultant Two [Member]    
Stock Issued During Period, Shares, Issued for Services 4,250,000us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
/ sglb_ThirdPartyAxis
= sglb_ConsultantTwoMember
 
Shares Issued, Price Per Share $ 0.03us-gaap_SharesIssuedPricePerShare
/ sglb_ThirdPartyAxis
= sglb_ConsultantTwoMember
 
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares 1,500,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
/ sglb_ThirdPartyAxis
= sglb_ConsultantTwoMember
 
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period 2,750,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod
/ sglb_ThirdPartyAxis
= sglb_ConsultantTwoMember
 
Consultant Three [Member]    
Stock Issued During Period, Shares, Issued for Services 2,000,000us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
/ sglb_ThirdPartyAxis
= sglb_ConsultantThreeMember
1,250,000us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
/ sglb_ThirdPartyAxis
= sglb_ConsultantThreeMember
Shares Issued, Price Per Share $ 0.0227us-gaap_SharesIssuedPricePerShare
/ sglb_ThirdPartyAxis
= sglb_ConsultantThreeMember
$ 0.128us-gaap_SharesIssuedPricePerShare
/ sglb_ThirdPartyAxis
= sglb_ConsultantThreeMember
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares 1,000,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
/ sglb_ThirdPartyAxis
= sglb_ConsultantThreeMember
 
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares 1,000,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares
/ sglb_ThirdPartyAxis
= sglb_ConsultantThreeMember
 
Consultant Four [Member]    
Stock Issued During Period, Shares, Issued for Services 500,000us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
/ sglb_ThirdPartyAxis
= sglb_ConsultantFourMember
 
Shares Issued, Price Per Share $ 0.0248us-gaap_SharesIssuedPricePerShare
/ sglb_ThirdPartyAxis
= sglb_ConsultantFourMember
 
Consultant Five [Member]    
Stock Issued During Period, Shares, Issued for Services 500,000us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
/ sglb_ThirdPartyAxis
= sglb_ConsultantFiveMember
 
Shares Issued, Price Per Share $ 0.156us-gaap_SharesIssuedPricePerShare
/ sglb_ThirdPartyAxis
= sglb_ConsultantFiveMember
 
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares 300,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
/ sglb_ThirdPartyAxis
= sglb_ConsultantFiveMember
 
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares 200,000us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares
/ sglb_ThirdPartyAxis
= sglb_ConsultantFiveMember
 
Warrant One [Member]    
Stock Issued During Period, Shares, New Issues   14,259,259us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_WarrantMember
Warrant Two [Member] | Consultant Two [Member]    
Stock Issued During Period, Shares, New Issues   2,187,500us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= sglb_WarrantTwoMember
/ sglb_ThirdPartyAxis
= sglb_ConsultantTwoMember
Warrant Three [Member]    
Stock Issued During Period, Shares, New Issues   2,037,037us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= sglb_WarrantThreeMember
Warrant Four [Member] | Consultant Four [Member]    
Stock Issued During Period, Shares, Issued for Services   312,500us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
/ us-gaap_StatementEquityComponentsAxis
= sglb_WarrantFourMember
/ sglb_ThirdPartyAxis
= sglb_ConsultantFourMember