No definition available.

Name:	sgbx_AccountingPoliciesTextualAbstract
Namespace Prefix:	sgbx_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amortization period of deferred loan costs.

+ References

No definition available.

+ Details

Name:	sgbx_AmortizationPeriodOfDeferredLoanCosts
Namespace Prefix:	sgbx_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of expiry date of factoring agreement.

+ References

No definition available.

+ Details

Name:	sgbx_DescriptionOfExpiryDateOfFactoringAgreement
Namespace Prefix:	sgbx_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Extended term of agreement.

+ References

No definition available.

+ Details

Name:	sgbx_ExtendedTermOfAgreement
Namespace Prefix:	sgbx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Factoring discount fees.

+ References

No definition available.

+ Details

Name:	sgbx_FactoringDiscountFees
Namespace Prefix:	sgbx_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Maximum Factoring of account receivable.

+ References

No definition available.

+ Details

Name:	sgbx_MaximumFactoringOfAccountReceivable
Namespace Prefix:	sgbx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of customers.

+ References

No definition available.

+ Details

Name:	sgbx_NumberOfCustomers
Namespace Prefix:	sgbx_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of account receivable, factoring agreement.

+ References

No definition available.

+ Details

Name:	sgbx_PercentageOfAccountReceivableOnFactoringAgreement
Namespace Prefix:	sgbx_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Warranty claims on contracts.

+ References

No definition available.

+ Details

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

- Definition

Warranty offered on completed contracts.

+ References

No definition available.

+ Details

Name:	sgbx_WarrantyOfferedOnCompletedContracts
Namespace Prefix:	sgbx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

+ Details

Name:	us-gaap_AmortizationOfIntangibleAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Description of the bankruptcy proceedings, including the process for emergence from bankruptcy. Does not include a description of management's plans to improve operations to enable the entity to emerge from bankruptcy, or a description of planned facility closings, business exit activities and headcount reduction plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64805424&loc=d3e55696-112764

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 852
-SubTopic 10
-Section 55
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56145-112766

+ Details

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

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13537-108611

+ Details

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

+ Details

Name:	us-gaap_FairValueAssumptionsExpectedDividendRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

+ 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 210.5-02.6(a))
-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 330
-SubTopic 10
-Section 35
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=68049868&loc=d3e3927-108312

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765

+ Details

Name:	us-gaap_InventoryNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

+ References

+ Details

Name:	us-gaap_InventoryWorkInProcess
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Entity's operating cycle if it is other than 12 months.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 926
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6473108&loc=d3e54406-107959

+ Details

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

- Definition

Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=68058157&loc=d3e18780-107790

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 35
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=68071081&loc=d3e1205-110223

+ Details

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

- Details

Name:	us-gaap_StatementScenarioAxis=us-gaap_SuccessorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_AccountsReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CustomerConcentrationRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueGoodsNetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=sgbx_CustomerOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=sgbx_CustomerTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=sgbx_CustomerThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=sgbx_CustomerFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_CostOfGoodsTotalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=us-gaap_SupplierConcentrationRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=sgbx_SupplierConcentrationRiskOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_EquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=sgbx_ComputerAndSoftwareMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Summary of Significant Accounting Policies (Details Textual)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2016 USD ($) Customer	Sep. 30, 2015 Customer	Sep. 30, 2016 USD ($) Customer	Sep. 30, 2015 Customer	Dec. 31, 2015 USD ($) Customer Vendor unrelatedVendor	Dec. 31, 2014 USD ($) Customer Vendor unrelatedVendor	Jun. 30, 2016 USD ($)	Aug. 13, 2012 USD ($)
Summary of significant accounting policies (Textual)
Term of company's operating cycle			The length of the Company's contracts varies, but is typically between six to twelve months.		The length of the Company's contracts varies, but is typically between six to twelve months.
Dividend yield			0.00%		0.00%
Warranty offered on completed contracts by Company			1 year		1 year
Inventory work-in-process	$ 138,427		$ 138,427
Bankruptcy proceedings, description			Intangible assets represent the preliminary assets identified upon emergence from bankruptcy and consist of $2,766,000 of proprietary knowledge and technology which is being amortized over 20 years and $1,113,000 of customer contracts which is being amortized over 2.5 years.
Accumulated amortization and amortization expense			$ 145,875
Extended term of factoring agreement					1 year
Description of expiry date of factoring agreement					The agreement originally expired January 2013 and was automatically extended for a one year period. The agreement will continue to automatically extend for successive periods of one year unless either party formally cancels.
Work in process inventory					$ 158,181	$ 198,970
Amortization period of deferred loan costs					Over 18 months.	Over 18 months.
Warranty claims on contracts					$ 2,356	$ 24,925
Percentage of accounts receivable, received in advance					75.00%
Maximum factoring agreement amount								$ 1,000,000
Successor [Member]
Summary of significant accounting policies (Textual)
Accumulated amortization and amortization expense	145,875
Work in process inventory	$ 138,427		$ 138,427				$ 40,170
Accounts Receivable [Member]
Summary of significant accounting policies (Textual)
Concentration risk, percentage			68.00%		74.00%
Number of customers \| Customer			2		2
Accounts Receivable [Member] \| Customer Concentration Risk [Member]
Summary of significant accounting policies (Textual)
Concentration risk, percentage					74.00%	85.00%
Number of customers \| Customer					2	2
Revenue [Member] \| Customer One [Member]
Summary of significant accounting policies (Textual)
Concentration risk, percentage	73.00%	19.00%	36.00%	25.00%
Number of customers \| Customer	2	1	2	4
Revenue [Member] \| Customer Two [Member]
Summary of significant accounting policies (Textual)
Concentration risk, percentage	12.00%		35.00%	18.00%
Revenue [Member] \| Customer Three [Member]
Summary of significant accounting policies (Textual)
Concentration risk, percentage				13.00%
Revenue [Member] \| Customer Four [Member]
Summary of significant accounting policies (Textual)
Concentration risk, percentage				12.00%
Revenue [Member] \| Customer Concentration Risk [Member]
Summary of significant accounting policies (Textual)
Concentration risk, percentage					70.00%	79.00%
Number of customers \| Customer					2	2
Cost of revenue [Member] \| Vendor Concentration Risk- Related Party [Member]
Summary of significant accounting policies (Textual)
Concentration risk, percentage	53.00%	91.00%	37.00%	45.00%	49.00%	25.00%
Number of customers	1	1	1	1	1	1
Cost of revenue [Member] \| Vendor Concentration Risk - Unrelated Party [Member]
Summary of significant accounting policies (Textual)
Concentration risk, percentage	11.00%		30.00%	24.00%	27.00%	61.00%
Number of customers	1		1	1	1	1
Equipment [Member]
Summary of significant accounting policies (Textual)
Estimated useful lives					5 years
Minimum [Member]
Summary of significant accounting policies (Textual)
Factoring discount fees					2.50%
Minimum [Member] \| Computer and Software [Member]
Summary of significant accounting policies (Textual)
Estimated useful lives					3 years
Maximum [Member]
Summary of significant accounting policies (Textual)
Factoring discount fees					7.50%
Maximum [Member] \| Computer and Software [Member]
Summary of significant accounting policies (Textual)
Estimated useful lives					5 years