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Amortization period of deferred loan costs.

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Description of expiry date of factoring agreement.

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No definition available.

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Extended term of agreement.

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No definition available.

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- Definition

Factoring discount fees.

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No definition available.

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Maximum Factoring of account receivable.

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Number of customers.

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Percentage of account receivable, factoring agreement.

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No definition available.

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- Definition

Warranty claims on contracts.

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Warranty offered on completed contracts.

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- 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.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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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).

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-Name Accounting Standards Codification

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-Section 50

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

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-Publisher FASB

-Name Accounting Standards Codification

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-Subparagraph (SX 210.5-02.6(a))

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

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-Name Accounting Standards Codification

-Topic 926

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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).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section 50

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Summary of Significant Accounting Policies (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Aug. 13, 2012
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.
Percentage of accounts receivable, received in advance	75.00%
Maximum factoring agreement amount			$ 1,000,000
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	198,970us-gaap_InventoryNet	34,052us-gaap_InventoryNet
Amortization period of deferred loan costs	Over 18 months.	Over 18 months.
Dividend yield	0.00%
Warranty offered on completed contracts by Company	1 year
Warranty claims on contracts	$ 24,925sgbx_WarrantyClaimsOnContracts
Accounts Receivable [Member] \| Customer Concentration Risk [Member]
Summary of significant accounting policies (Textual)
Concentration risk, percentage	85.00%	87.00%
Number of customers	2	2
Total revenue [Member] \| Customer Concentration Risk [Member]
Summary of significant accounting policies (Textual)
Concentration risk, percentage	79.00%	57.00%
Number of customers	2	3
Total cost of revenue [Member] \| Vendor Concentration Risk- Related Party [Member]
Summary of significant accounting policies (Textual)
Concentration risk, percentage	25.00%	31.00%
Number of customers	1	1
Total cost of revenue [Member] \| Vendor Concentration Risk - Unrelated Party [Member]
Summary of significant accounting policies (Textual)
Concentration risk, percentage	61.00%	27.00%
Number of customers	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