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Construction Backlog (Details Textual) (USD $) | 12 Months Ended
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Dec. 31, 2012
Construction Backlog (Textual) |
Value of additional customer contracts | $ 23,000

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- Details
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Namespace Prefix: | sgbx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Value of additional customer contracts. + References No definition available. + Details
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Namespace Prefix: | sgbx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration