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Commitments (Details Textual) (USD $) | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011
Commitments (Textual) |  |
Rental expense | $ 112,867 | $ 89,995
Lease inception date | Began in October 2011 |
Lease expiration date | Oct. 31, 2016 |

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

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- Definition Lease inception date. + References No definition available. + Details
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- Definition Date which lease or group of leases is set to expire, in CCYY-MM-DD format. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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