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Summary of Significant Accounting Policies (Tables) | 6 Months Ended
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Jun. 30, 2024
Accounting Policies [Abstract] |
Summary of disaggregation of revenues by categories |
|  |  | Three Months Ended June 30,
| Revenue by Customer Type |  | 2024 |  | 2023
| Construction and Engineering Services: |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Hotel/Hospitality |  | $ | 149,961 |  |  | 12 | % |  | $ | 10,525 |  |  | — | %
| Office |  |  | 1,061,293 |  |  | 85 | % |  |  | 5,086,530 |  |  | 100 | %
| Subtotal |  |  | 1,211,254 |  |  | 97 | % |  |  | 5,097,055 |  |  | 100 | %
| SG DevCorp sales: |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Real estate commissions |  |  | 42,162 |  |  | 3 | % |  |  | — |  |  | — | %
| Total revenue by customer type |  | $ | 1,253,416 |  |  | 100 | % |  | $ | 5,097,055 |  |  | 100 | %
|  |  | Six Months Ended June 30,
| Revenue by Customer Type |  | 2024 |  | 2023
| Construction and Engineering Services: |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Hotel/Hospitality |  | $ | 181,719 |  |  | 8 | % |  | $ | 44,201 |  |  | — | %
| Office |  |  | 1,997,650 |  |  | 88 | % |  |  | 10,556,789 |  |  | 100 | %
| Subtotal |  |  | 2,179,369 |  |  | 96 | % |  |  | 10,600,990 |  |  | 100 | %
| SG DevCorp sales: |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Real estate commissions |  |  | 91,978 |  |  | 4 | % |  |  | — |  |  | — | %
| Total revenue by customer type |  | $ | 2,271,347 |  |  | 100 | % |  | $ | 10,600,990 |  |  | 100 | %
Summary of combined financial position of equity affiliates |
| Condensed balance sheet information: | June 30, 2024 |  | December 31, 2023 |
|  |  | (Unaudited) |  |  | (Unaudited) |
| Total assets | $ | 39,975,000 |  | $ | 39,800,000 |
| Total liabilities | $ | 9,800,000 |  | $ | 9,700,000 |
| Members’ equity | $ | 30,175,000 |  | $ | 30,100,000 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-5 + Details
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- Definition A tabular presentation of the information summarizing investments in and advances to majority-owned subsidiaries, other controlled companies, and other affiliates, as prescribed by the SEC. It reflects specified information about ownership, financial results from, and financial position in such entities. Includes the tabular presentations that disaggregate investments in and advances to majority-owned subsidiaries, other controlled companies, and other affiliates. + References No definition available. + Details
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