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DISAGGREGATION OF REVENUE (Tables) | 12 Months Ended
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Sep. 30, 2025
DISAGGREGATION OF REVENUE |
Schedule of disaggregation of revenue | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Twelve Months Ended September 30, 2025
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Electrical, | ​ | ​ | ​
​ | ​ ​ ​ | Gas & Water | ​ ​ ​ | Gas & Petroleum | ​ ​ ​ | Mechanical, | ​ ​ ​ | Total revenue
​ | ​ | Distribution | ​ | Transmission | ​ | & General | ​ | from contracts
Lump sum contracts | ​ | $ | — | ​ | $ | — | ​ | $ | 141,753,561 | ​ | $ | 141,753,561
Unit price contracts | ​ |  | 149,574,917 | ​ |  | 48,061,502 | ​ |  | 4,139,223 | ​ |  | 201,775,642
Cost plus and T&M contracts | ​ |  | — | ​ |  | 16,524,635 | ​ |  | 50,947,535 | ​ |  | 67,472,170
Total revenue from contracts | ​ | $ | 149,574,917 | ​ | $ | 64,586,137 | ​ | $ | 196,840,319 | ​ | $ | 411,001,373
​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​
Earned over time | ​ | $ | 84,260,791 | ​ | $ | 48,061,502 | ​ | $ | 152,546,419 | ​ | $ | 284,868,712
Earned at point in time | ​ |  | 65,314,126 | ​ |  | 16,524,635 | ​ |  | 44,293,900 | ​ |  | 126,132,661
Total revenue from contracts | ​ | $ | 149,574,917 | ​ | $ | 64,586,137 | ​ | $ | 196,840,319 | ​ | $ | 411,001,373
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Twelve Months Ended September 30, 2024
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Electrical, | ​ | ​ | ​
​ | ​ | Gas & Water | ​ | Gas & Petroleum | ​ | Mechanical, | ​ | Total revenue
​ | ​ ​ ​ | Distribution | ​ ​ ​ | Transmission | ​ ​ ​ | & General | ​ ​ ​ | from contracts
Lump sum contracts | ​ | $ | — | ​ | $ | — | ​ | $ | 121,997,872 | ​ | $ | 121,997,872
Unit price contracts | ​ |  | 82,426,199 | ​ |  | 71,265,020 | ​ |  | 4,141,938 | ​ |  | 157,833,157
Cost plus and T&M contracts | ​ |  | — | ​ |  | 9,790,155 | ​ |  | 62,255,677 | ​ |  | 72,045,832
Total revenue from contracts | ​ | $ | 82,426,199 | ​ | $ | 81,055,175 | ​ | $ | 188,395,487 | ​ | $ | 351,876,861
​ | ​ | ​ | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​
Earned over time | ​ | $ | 9,541,650 | ​ | $ | 71,265,020 | ​ | $ | 133,898,665 | ​ | $ | 214,705,335
Earned at point in time | ​ |  | 72,884,549 | ​ |  | 9,790,155 | ​ |  | 54,496,822 | ​ |  | 137,171,526
Total revenue from contracts | ​ | $ | 82,426,199 | ​ | $ | 81,055,175 | ​ | $ | 188,395,487 | ​ | $ | 351,876,861

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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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