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Statements of Cash Flow Parenthetical (USD $)	3 Months Ended
	Mar. 31, 2012
Statement Of Cash Flows [Abstract]
Payment for prior liability in connection with private offering	$ 50,000

X

- Definition

In connection with the private offering, $50,000 was paid for a prior liability which was included in accounts payable and accrued expenses

+ References

No definition available.

+ Details

Name:	sgbx_PaymentForPriorLiabilityInConnectionWithPrivateOffering
Namespace Prefix:	sgbx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_StatementOfCashFlowsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration