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Related Party Transactions (Details) (USD $)
0 Months Ended 3 Months Ended 12 Months Ended
Apr. 10, 2014
Mar. 31, 2015
Mar. 31, 2014
Dec. 31, 2014
Mar. 26, 2009
Jan. 26, 2011
Related Party Transactions (Textual)            
Interest rate 8.00%us-gaap_DebtInstrumentInterestRateStatedPercentage          
Maturity date Apr. 01, 2016          
Interest expense to related party   $ 2,021us-gaap_InterestExpenseRelatedParty $ 2,021us-gaap_InterestExpenseRelatedParty      
Accrued interest, related party   38,854us-gaap_AccountsPayableAndOtherAccruedLiabilitiesCurrent   36,833us-gaap_AccountsPayableAndOtherAccruedLiabilitiesCurrent    
General and administrative expenses   218,020us-gaap_GeneralAndAdministrativeExpense 220,002us-gaap_GeneralAndAdministrativeExpense      
Conglobal Industries Inc [Member]            
Related Party Transactions (Textual)            
Related party, cost of goods sold   206,449us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sgbx_ConglobalIndustriesIncMember
186,012us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sgbx_ConglobalIndustriesIncMember
     
Related party accounts payable and accrued expenses   222,953sgbx_RelatedPartyAccountsPayableAndAccruedExpenses
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sgbx_ConglobalIndustriesIncMember
  92,792sgbx_RelatedPartyAccountsPayableAndAccruedExpenses
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sgbx_ConglobalIndustriesIncMember
   
Lawrence Group [Member]            
Related Party Transactions (Textual)            
Related party, cost of goods sold   4,760us-gaap_RelatedPartyTransactionPurchasesFromRelatedParty
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sgbx_LawrenceGroupMember
       
Pre-project expenses included in related party accounts payable and accrued expenses   32,389sgbx_PreProjectExpensesIncludedInRelatedPartyAccountsPayableAndAccruedExpenses
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sgbx_LawrenceGroupMember
  32,389sgbx_PreProjectExpensesIncludedInRelatedPartyAccountsPayableAndAccruedExpenses
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sgbx_LawrenceGroupMember
   
Vector [Member]            
Related Party Transactions (Textual)            
Notes payable   73,500us-gaap_NotesPayable
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sgbx_VectorMember
  73,500us-gaap_NotesPayable
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sgbx_VectorMember
50,000us-gaap_NotesPayable
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sgbx_VectorMember
 
Interest rate   11.00%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sgbx_VectorMember
       
Maturity date   Jun. 30, 2015        
Vector [Member] | Maximum [Member]            
Related Party Transactions (Textual)            
Notes payable           100,000us-gaap_NotesPayable
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sgbx_VectorMember
Vector [Member] | Minimum [Member]            
Related Party Transactions (Textual)            
Notes payable           50,000us-gaap_NotesPayable
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sgbx_VectorMember
Cheif Financial Officer [Member]            
Related Party Transactions (Textual)            
Accrued interest, related party   10,237us-gaap_AccountsPayableAndOtherAccruedLiabilitiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sgbx_CheifFinancialOfficerMember
       
Accounts payable, related parties   32,000us-gaap_AccountsPayableRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sgbx_CheifFinancialOfficerMember
  7,300us-gaap_AccountsPayableRelatedPartiesCurrent
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sgbx_CheifFinancialOfficerMember
   
General and administrative expenses   $ 32,000us-gaap_GeneralAndAdministrativeExpense
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sgbx_CheifFinancialOfficerMember
$ 10,000us-gaap_GeneralAndAdministrativeExpense
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= sgbx_CheifFinancialOfficerMember