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Convertible Debentures (Details) (USD $) | Mar. 31, 2015 | Dec. 31, 2014
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Debt Instrument [Line Items] |  |
Total debt | $ 3,304,110 us-gaap_LongTermDebt | $ 3,202,902 us-gaap_LongTermDebt
Less current portion | 3,304,110 us-gaap_LongTermDebtCurrent | 800,726 us-gaap_LongTermDebtCurrent
Long-term debt |  | 2,402,176 us-gaap_LongTermDebtNoncurrent
2014 Exchange Debentures [Member] |  |
Debt Instrument [Line Items] |  |
Total debt | 1,915,200 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = sgbx_ConvertibleDebentureThreeMember | 1,915,200 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = sgbx_ConvertibleDebentureThreeMember
2014 New Debentures [Member] |  |
Debt Instrument [Line Items] |  |
Total debt | $ 1,388,910 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = sgbx_ConvertibleDebentureFourMember | $ 1,287,702 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = sgbx_ConvertibleDebentureFourMember

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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 + Details
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- Definition Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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