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Warrants (Details Textual) (USD $) | 3 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended | 1 Months Ended
--- | --- | --- | --- | --- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Dec. 31, 2014 | Apr. 30, 2013 | Dec. 31, 2013 | May 31, 2012 | Mar. 31, 2012
Warrants (Textual) |  |  |  |  |  |  |
Change in fair value of financial instruments | $ 385,891 us-gaap_GainLossOnDerivativeInstrumentsNetPretax | $ (80,215)us-gaap_GainLossOnDerivativeInstrumentsNetPretax |  |  |  |  |
Hillair Capital Investments Lp [Member] |  |  |  |  |  |  |
Warrants (Textual) |  |  |  |  |  |  |
Number of common stock entitle in warrants | 2,604,651 us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights / dei_LegalEntityAxis = sgbx_HillairCapitalInvestmentsLpMember |  |  |  |  |  |
Number of common stock entitle in warrants one |  |  | 5,107,200 sgbx_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRightsOne / dei_LegalEntityAxis = sgbx_HillairCapitalInvestmentsLpMember |  |  |  |
Investment Warrants, Exercise Price | $ 0.4488 invest_InvestmentWarrantsExercisePrice / dei_LegalEntityAxis = sgbx_HillairCapitalInvestmentsLpMember |  |  |  |  |  |
Investment warrants exercise price one |  |  | $ 0.275 sgbx_InvestmentWarrantsExercisePriceOne / dei_LegalEntityAxis = sgbx_HillairCapitalInvestmentsLpMember |  |  |  |
Expiration date of warrants | Jun. 27, 2018 |  |  |  |  |  |
Fair value of warrants | 40,320 sgbx_FairValueOfWarrantsUnderAffiliates / dei_LegalEntityAxis = sgbx_HillairCapitalInvestmentsLpMember |  | 96,931 sgbx_FairValueOfWarrantsUnderAffiliates / dei_LegalEntityAxis = sgbx_HillairCapitalInvestmentsLpMember |  |  |  |
Merriman Capital Inc [Member] |  |  |  |  |  |  |
Warrants (Textual) |  |  |  |  |  |  |
Fair value of warrants | 2,858 sgbx_FairValueOfWarrantsUnderAffiliates / dei_LegalEntityAxis = sgbx_MerrimanCapitalIncMember |  |  |  |  |  |
Frank Casano [Member] |  |  |  |  |  |  |
Warrants (Textual) |  |  |  |  |  |  |
Number of common stock entitle in warrants |  |  |  | 1,041,861 us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights / dei_LegalEntityAxis = sgbx_FrankCasanoMember |  |  |
Number of common stock entitle in warrants one |  |  | 2,042,880 sgbx_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRightsOne / dei_LegalEntityAxis = sgbx_FrankCasanoMember |  |  |  |
Investment Warrants, Exercise Price |  |  |  | $ 0.4488 invest_InvestmentWarrantsExercisePrice / dei_LegalEntityAxis = sgbx_FrankCasanoMember |  |  |
Investment warrants exercise price one |  |  | $ 0.275 sgbx_InvestmentWarrantsExercisePriceOne / dei_LegalEntityAxis = sgbx_FrankCasanoMember |  |  |  |
Fair value of warrants | 22,400 sgbx_FairValueOfWarrantsUnderAffiliates / dei_LegalEntityAxis = sgbx_FrankCasanoMember |  | 51,153 sgbx_FairValueOfWarrantsUnderAffiliates / dei_LegalEntityAxis = sgbx_FrankCasanoMember |  |  |  |
Shares of common stock is entitled to purchase in connection with the exchange agreement |  |  |  | 1,792,000 sgbx_ShareBasedCompensationArrangementByShareBasedPaymentAwardPurchaseOfCommonStock / dei_LegalEntityAxis = sgbx_FrankCasanoMember |  |  |
Shares issued, price per share |  |  |  | $ 0.25 us-gaap_SharesIssuedPricePerShare / dei_LegalEntityAxis = sgbx_FrankCasanoMember |  |  |
Masterson [Member] |  |  |  |  |  |  |
Warrants (Textual) |  |  |  |  |  |  |
Number of common stock entitle in warrants |  |  |  | 260,465 us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights / dei_LegalEntityAxis = sgbx_MastersonMember |  |  |
Number of common stock entitle in warrants one |  |  | 510,720 sgbx_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRightsOne / dei_LegalEntityAxis = sgbx_MastersonMember |  |  |  |
Investment Warrants, Exercise Price |  |  |  | $ 0.4488 invest_InvestmentWarrantsExercisePrice / dei_LegalEntityAxis = sgbx_MastersonMember |  |  |
Investment warrants exercise price one |  |  | $ 0.275 sgbx_InvestmentWarrantsExercisePriceOne / dei_LegalEntityAxis = sgbx_MastersonMember |  |  |  |
Fair value of warrants | 22,400 sgbx_FairValueOfWarrantsUnderAffiliates / dei_LegalEntityAxis = sgbx_MastersonMember |  | 51,153 sgbx_FairValueOfWarrantsUnderAffiliates / dei_LegalEntityAxis = sgbx_MastersonMember |  |  |  |
Shares of common stock is entitled to purchase in connection with the exchange agreement |  |  |  | 448,000 sgbx_ShareBasedCompensationArrangementByShareBasedPaymentAwardPurchaseOfCommonStock / dei_LegalEntityAxis = sgbx_MastersonMember |  |  |
Shares issued, price per share |  |  |  | $ 0.25 us-gaap_SharesIssuedPricePerShare / dei_LegalEntityAxis = sgbx_MastersonMember |  |  |
Warrant [Member] |  |  |  |  |  |  |
Warrants (Textual) |  |  |  |  |  |  |
Expiration date of warrants |  |  | Apr. 10, 2019 |  |  |  |
Fair value of warrants | 84,269 sgbx_FairValueOfWarrantsUnderAffiliates / us-gaap_AwardTypeAxis = us-gaap_WarrantMember |  | 167,969 sgbx_FairValueOfWarrantsUnderAffiliates / us-gaap_AwardTypeAxis = us-gaap_WarrantMember |  |  |  |
Change in fair value of financial instruments | 283,882 us-gaap_GainLossOnDerivativeInstrumentsNetPretax / us-gaap_AwardTypeAxis = us-gaap_WarrantMember | 80,598 us-gaap_GainLossOnDerivativeInstrumentsNetPretax / us-gaap_AwardTypeAxis = us-gaap_WarrantMember |  |  |  |  |
New Warrant [Member] |  |  |  |  |  |  |
Warrants (Textual) |  |  |  |  |  |  |
Number of common stock entitle in warrants |  |  | 8,322,000 us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights / us-gaap_AwardTypeAxis = sgbx_NewWarrantMember |  |  |  |
Investment Warrants, Exercise Price |  |  | $ 0.275 invest_InvestmentWarrantsExercisePrice / us-gaap_AwardTypeAxis = sgbx_NewWarrantMember |  |  |  |
Fair value of warrants | 91,542 sgbx_FairValueOfWarrantsUnderAffiliates / us-gaap_AwardTypeAxis = sgbx_NewWarrantMember |  | 182,466 sgbx_FairValueOfWarrantsUnderAffiliates / us-gaap_AwardTypeAxis = sgbx_NewWarrantMember |  |  |  |
2012 Hillair Debenture One [Member] | Hillair Capital Investments Lp [Member] |  |  |  |  |  |  |
Warrants (Textual) |  |  |  |  |  |  |
Number of common stock entitle in warrants | 4,480,000 us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights / sgbx_DebtIssuanceAxis = sgbx_ConvertibleDebtIssuanceOneMember / dei_LegalEntityAxis = sgbx_HillairCapitalInvestmentsLpMember |  |  |  |  |  |
Shares issued, price per share | $ 0.25 us-gaap_SharesIssuedPricePerShare / sgbx_DebtIssuanceAxis = sgbx_ConvertibleDebtIssuanceOneMember / dei_LegalEntityAxis = sgbx_HillairCapitalInvestmentsLpMember |  |  |  |  |  |
2012 Hillair Debenture One [Member] | Merriman Capital Inc [Member] |  |  |  |  |  |  |
Warrants (Textual) |  |  |  |  |  |  |
Number of common stock entitle in warrants | 52,093 us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights / sgbx_DebtIssuanceAxis = sgbx_ConvertibleDebtIssuanceOneMember / dei_LegalEntityAxis = sgbx_MerrimanCapitalIncMember |  |  |  |  |  |
Number of common stock entitle in warrants one | 52,093 sgbx_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRightsOne / sgbx_DebtIssuanceAxis = sgbx_ConvertibleDebtIssuanceOneMember / dei_LegalEntityAxis = sgbx_MerrimanCapitalIncMember |  |  |  |  |  |
Investment Warrants, Exercise Price | $ 0.4488 invest_InvestmentWarrantsExercisePrice / sgbx_DebtIssuanceAxis = sgbx_ConvertibleDebtIssuanceOneMember / dei_LegalEntityAxis = sgbx_MerrimanCapitalIncMember |  |  |  |  |  |
Investment warrants exercise price one | $ 0.43 sgbx_InvestmentWarrantsExercisePriceOne / sgbx_DebtIssuanceAxis = sgbx_ConvertibleDebtIssuanceOneMember / dei_LegalEntityAxis = sgbx_MerrimanCapitalIncMember |  |  |  |  |  |
Fair value of warrants | 8,166 sgbx_FairValueOfWarrantsUnderAffiliates / sgbx_DebtIssuanceAxis = sgbx_ConvertibleDebtIssuanceOneMember / dei_LegalEntityAxis = sgbx_MerrimanCapitalIncMember |  |  |  |  |  |
2012 Hillair Debenture One [Member] | Next View Capital [Member] |  |  |  |  |  |  |
Warrants (Textual) |  |  |  |  |  |  |
Number of common stock entitle in warrants | 1,120,000 us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights / sgbx_DebtIssuanceAxis = sgbx_ConvertibleDebtIssuanceOneMember / dei_LegalEntityAxis = sgbx_NextViewCapitalMember |  |  |  |  |  |
Number of common stock entitle in warrants one | 448,000 sgbx_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRightsOne / sgbx_DebtIssuanceAxis = sgbx_ConvertibleDebtIssuanceOneMember / dei_LegalEntityAxis = sgbx_NextViewCapitalMember |  |  |  |  |  |
Shares issued, price per share | $ 0.25 us-gaap_SharesIssuedPricePerShare / sgbx_DebtIssuanceAxis = sgbx_ConvertibleDebtIssuanceOneMember / dei_LegalEntityAxis = sgbx_NextViewCapitalMember |  |  |  |  |  |
2012 Hillair Debenture Two [Member] | Merriman Capital Inc [Member] |  |  |  |  |  |  |
Warrants (Textual) |  |  |  |  |  |  |
Number of common stock entitle in warrants | 18,233 us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights / sgbx_DebtIssuanceAxis = sgbx_ConvertibleDebtIssuanceTwoMember / dei_LegalEntityAxis = sgbx_MerrimanCapitalIncMember |  |  |  |  |  |
Number of common stock entitle in warrants one | 18,233 sgbx_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRightsOne / sgbx_DebtIssuanceAxis = sgbx_ConvertibleDebtIssuanceTwoMember / dei_LegalEntityAxis = sgbx_MerrimanCapitalIncMember |  |  |  |  |  |
Investment Warrants, Exercise Price | $ 0.4488 invest_InvestmentWarrantsExercisePrice / sgbx_DebtIssuanceAxis = sgbx_ConvertibleDebtIssuanceTwoMember / dei_LegalEntityAxis = sgbx_MerrimanCapitalIncMember |  |  |  |  |  |
Investment warrants exercise price one | $ 0.43 sgbx_InvestmentWarrantsExercisePriceOne / sgbx_DebtIssuanceAxis = sgbx_ConvertibleDebtIssuanceTwoMember / dei_LegalEntityAxis = sgbx_MerrimanCapitalIncMember |  |  |  |  |  |
Fair value of warrants | 2,858 sgbx_FairValueOfWarrantsUnderAffiliates / sgbx_DebtIssuanceAxis = sgbx_ConvertibleDebtIssuanceTwoMember / dei_LegalEntityAxis = sgbx_MerrimanCapitalIncMember |  |  |  |  |  |
2012 Hillair Debenture Two [Member] | Next View Capital [Member] |  |  |  |  |  |  |
Warrants (Textual) |  |  |  |  |  |  |
Number of common stock entitle in warrants | 651,163 us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights / sgbx_DebtIssuanceAxis = sgbx_ConvertibleDebtIssuanceTwoMember / dei_LegalEntityAxis = sgbx_NextViewCapitalMember |  |  |  |  |  |
Investment Warrants, Exercise Price | $ 0.4488 invest_InvestmentWarrantsExercisePrice / sgbx_DebtIssuanceAxis = sgbx_ConvertibleDebtIssuanceTwoMember / dei_LegalEntityAxis = sgbx_NextViewCapitalMember |  |  |  |  |  |
Fair value of warrants | 14,112 sgbx_FairValueOfWarrantsUnderAffiliates / sgbx_DebtIssuanceAxis = sgbx_ConvertibleDebtIssuanceTwoMember / dei_LegalEntityAxis = sgbx_NextViewCapitalMember |  | 33,926 sgbx_FairValueOfWarrantsUnderAffiliates / sgbx_DebtIssuanceAxis = sgbx_ConvertibleDebtIssuanceTwoMember / dei_LegalEntityAxis = sgbx_NextViewCapitalMember |  |  |  |
Fair value of excercise price warrants per share |  |  |  |  | $ 0.23 sgbx_FairValueOfExcercisePriceWarrantsPerShare / sgbx_DebtIssuanceAxis = sgbx_ConvertibleDebtIssuanceTwoMember / dei_LegalEntityAxis = sgbx_NextViewCapitalMember |  |
2012 Hillair Debenture Two [Member] | Another Investor [Member] |  |  |  |  |  |  |
Warrants (Textual) |  |  |  |  |  |  |
Number of common stock entitle in warrants | 260,465 us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights / sgbx_DebtIssuanceAxis = sgbx_ConvertibleDebtIssuanceTwoMember / dei_LegalEntityAxis = sgbx_AnotherInvestorMember |  |  |  |  |  |
Investment Warrants, Exercise Price | $ 0.4488 invest_InvestmentWarrantsExercisePrice / sgbx_DebtIssuanceAxis = sgbx_ConvertibleDebtIssuanceTwoMember / dei_LegalEntityAxis = sgbx_AnotherInvestorMember |  |  |  |  |  |
Fair value of warrants | 14,112 sgbx_FairValueOfWarrantsUnderAffiliates / sgbx_DebtIssuanceAxis = sgbx_ConvertibleDebtIssuanceTwoMember / dei_LegalEntityAxis = sgbx_AnotherInvestorMember |  | 33,926 sgbx_FairValueOfWarrantsUnderAffiliates / sgbx_DebtIssuanceAxis = sgbx_ConvertibleDebtIssuanceTwoMember / dei_LegalEntityAxis = sgbx_AnotherInvestorMember |  |  |  |
Fair value of excercise price warrants per share |  |  |  |  | $ 0.23 sgbx_FairValueOfExcercisePriceWarrantsPerShare / sgbx_DebtIssuanceAxis = sgbx_ConvertibleDebtIssuanceTwoMember / dei_LegalEntityAxis = sgbx_AnotherInvestorMember |  |
2010 Private Placement [Member] |  |  |  |  |  |  |
Warrants (Textual) |  |  |  |  |  |  |
Number of common stock entitle in warrants | 1,044,584 us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights / us-gaap_SubsidiarySaleOfStockAxis = sgbx_TwoThousandTenPrivatePlacementMember |  |  |  |  |  |
Investment Warrants, Exercise Price | $ 0.25 invest_InvestmentWarrantsExercisePrice / us-gaap_SubsidiarySaleOfStockAxis = sgbx_TwoThousandTenPrivatePlacementMember |  |  |  |  |  |
Expiration date of warrants | Oct. 28, 2015 |  |  |  |  |  |
Fair value of warrants | 0 sgbx_FairValueOfWarrantsUnderAffiliates / us-gaap_SubsidiarySaleOfStockAxis = sgbx_TwoThousandTenPrivatePlacementMember |  | 3,476 sgbx_FairValueOfWarrantsUnderAffiliates / us-gaap_SubsidiarySaleOfStockAxis = sgbx_TwoThousandTenPrivatePlacementMember |  |  |  |
2012 Private Placement [Member] |  |  |  |  |  |  |
Warrants (Textual) |  |  |  |  |  |  |
Number of common stock entitle in warrants |  |  |  |  |  | 29,700 us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights / us-gaap_SubsidiarySaleOfStockAxis = sgbx_TwoThousandTwelvePrivatePlacementMember | 86,323 us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights / us-gaap_SubsidiarySaleOfStockAxis = sgbx_TwoThousandTwelvePrivatePlacementMember
Investment Warrants, Exercise Price |  |  |  |  |  | $ 0.35 invest_InvestmentWarrantsExercisePrice / us-gaap_SubsidiarySaleOfStockAxis = sgbx_TwoThousandTwelvePrivatePlacementMember | $ 0.35 invest_InvestmentWarrantsExercisePrice / us-gaap_SubsidiarySaleOfStockAxis = sgbx_TwoThousandTwelvePrivatePlacementMember
Expiration date of warrants |  |  |  |  |  | May 22, 2017 | Mar. 27, 2017
Fair value of warrants | $ 146 sgbx_FairValueOfWarrantsUnderAffiliates / us-gaap_SubsidiarySaleOfStockAxis = sgbx_TwoThousandTwelvePrivatePlacementMember |  | $ 750 sgbx_FairValueOfWarrantsUnderAffiliates / us-gaap_SubsidiarySaleOfStockAxis = sgbx_TwoThousandTwelvePrivatePlacementMember |  |  |  |
Additional shares issued in connection with plan |  |  |  |  |  | 702,872 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOtherShareIncreaseDecrease / us-gaap_SubsidiarySaleOfStockAxis = sgbx_TwoThousandTwelvePrivatePlacementMember |

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- Definition Exercise price of the warrants. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column A + Details
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