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Contract Assets - Contract Assets Reflect Costs and Estimated Earnings in Excess of \Billings on Uncompleted Contracts (Detail) - USD ($) | Sep. 30, 2024 | Sep. 30, 2023
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Contract with Customer, Asset, after Allowance for Credit Loss [Abstract] |  |
Costs incurred on uncompleted contracts | $ 14,508,000 | $ 18,468,000
Estimated earnings | 6,977,000 | 7,939,000
Costs and estimated earnings on uncompleted contracts | 21,485,000 | 26,407,000
Billings to date | 12,146,000 | 24,899,000
Contract assets | $ 9,339,000 | $ 1,508,000

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- 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479837/606-10-45-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479837/606-10-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-8 + Details
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