CONTRACT BALANCES - Accounts receivable-trade, net of allowance for doubtful accounts (Details) - USD ($) |
6 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Sep. 30, 2025 |
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| CONTRACT BALANCES | |||
| Accounts receivable-trade, net of allowance for credit losses | $ 60,068,636 | $ 76,048,448 | |
| Decrease in contracts receivable | (15,979,812) | $ (10,162,409) | |
| Contract assets | |||
| Cost and estimated earnings in excess of billings | 26,773,714 | 34,455,011 | |
| Decrease in cost and estimated earnings in excess of billings | (7,681,297) | (3,581,095) | |
| Contract liabilities | |||
| Billings in excess of cost and estimated earnings | 29,474,281 | $ 28,318,765 | |
| Increase in billings in excess of cost and estimated earnings | $ 1,155,516 | $ 5,311,068 | |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The amount related to increase (decrease) in contract with customer due to increase in costs and estimated earnings in excess of billings on uncompleted projects. No definition available.
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| X | ||||||||||
- Definition The amount related to increase (decrease) in contract with customer due to decrease in billings in excess of costs and estimated earnings on uncompleted projects. No definition available.
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- Definition Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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