XML 46 R36.htm IDEA: XBRL DOCUMENT
v3.20.2

Liquidity (Details) | Sep. 30, 2020 USD ($)
--- | ---
Liquidity [Line Items] |
Total Backlog | $ 24,865,499
Within 1 year [Member] |
Liquidity [Line Items] |
Total Backlog | 12,009,249
1 to 2 years [Member] |
Liquidity [Line Items] |
Total Backlog | $ 12,856,250

X
- References No definition available. + Details
Name: | sgbx_LiquidityLineItems
Namespace Prefix: | sgbx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of transaction price allocated to performance obligation that has not been recognized as revenue. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130556-203045 + Details
Name: | us-gaap_RevenueRemainingPerformanceObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | sgbx_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDatesAxis=sgbx_WithinOneYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | sgbx_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDatesAxis=sgbx_OneToTwoYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |