XML 42 R30.htm IDEA: XBRL DOCUMENT
v3.19.2

Summary of Significant Accounting Policies (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue by customer type | $ 727,908 | $ 2,305,797 | $ 2,463,032 | $ 3,849,325
Total revenue by customer type, percentage | 100.00% | 100.00% | 100.00% | 100.00%
Multi-Family [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue by customer type | $ 41,319 | $ 210,814 | $ 112,191 | $ 210,814
Total revenue by customer type, percentage | 6.00% | 9.00% | 5.00% | 5.00%
Office [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue by customer type | $ 82,294 | $ 229,727 | $ 1,207,897 | $ 593,356
Total revenue by customer type, percentage | 11.00% | 10.00% | 49.00% | 15.00%
Retail [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue by customer type | $ 606,725 | $ 416,976 | $ 1,137,384 | $ 531,920
Total revenue by customer type, percentage | 83.00% | 18.00% | 46.00% | 14.00%
School [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue by customer type |  | $ 1,100,403 |  | $ 1,860,238
Total revenue by customer type, percentage |  | 48.00% |  | 48.00%
Special Use [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue by customer type |  | $ 330,965 | $ 6,812 | $ 636,085
Total revenue by customer type, percentage |  | 14.00% |  | 17.00%
Other [Member] |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total revenue by customer type | $ (2,430) | $ 16,912 | $ (1,252) | $ 16,912
Total revenue by customer type, percentage |  | 100.00% |  | 1.00%

X
- Definition Percentage, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References No definition available. + Details
Name: | sgbx_RevenueFromContractWithCustomerExcludingAssessedTaxPercentage
Namespace Prefix: | sgbx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DisaggregationOfRevenueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 + Details
Name: | us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | srt_ProductOrServiceAxis=sgbx_MultiFamiliesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=sgbx_OfficeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_RetailMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=sgbx_SchoolMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=sgbx_SpecialUseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_ProductAndServiceOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |